US3296823A - Absorption refrigerating system having pump means circulating absorbent and refrigerant - Google Patents

Absorption refrigerating system having pump means circulating absorbent and refrigerant Download PDF

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Publication number
US3296823A
US3296823A US464359A US46435965A US3296823A US 3296823 A US3296823 A US 3296823A US 464359 A US464359 A US 464359A US 46435965 A US46435965 A US 46435965A US 3296823 A US3296823 A US 3296823A
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United States
Prior art keywords
pump
shaft
impeller
conduit
refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US464359A
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English (en)
Inventor
Robert P Novak
James M Porter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trane US Inc
Original Assignee
Trane Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Trane Co filed Critical Trane Co
Priority to US464359A priority Critical patent/US3296823A/en
Priority to GB6583/66A priority patent/GB1084663A/en
Priority to CH318966A priority patent/CH513375A/fr
Priority to DE19661501151 priority patent/DE1501151A1/de
Publication of US3296823A publication Critical patent/US3296823A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Assigned to TRANE COMPANY, THE reassignment TRANE COMPANY, THE MERGER (SEE DOCUMENT FOR DETAILS). DELAWARE, EFFECTIVE FEB. 24, 1984 Assignors: A-S CAPITAL INC. A CORP OF DE
Assigned to TRANE COMPANY THE reassignment TRANE COMPANY THE MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE 12/1/83 WISCONSIN Assignors: A-S CAPITAL INC., A CORP OF DE (CHANGED TO), TRANE COMPANY THE, A CORP OF WI (INTO)
Assigned to AMERICAN STANDARD INC., A CORP OF DE reassignment AMERICAN STANDARD INC., A CORP OF DE MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE 12/28/84 DELAWARE Assignors: A-S SALEM INC., A CORP. OF DE (MERGED INTO), TRANE COMPANY, THE
Assigned to A-S CAPITAL INC., A CORP OF DE reassignment A-S CAPITAL INC., A CORP OF DE MERGER (SEE DOCUMENT FOR DETAILS). Assignors: TRANE COMPANY THE A WI CORP
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps
    • F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
    • F25B15/025—Liquid transfer means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

Definitions

  • This invention relates to absorption refrigerating systems and more particularly to an absorption refrigerating system including pump means for circulating fluids in the system.
  • systems of this type have interior spaces which are less than atmospheric pressure during operation. It is desirable to avoid the use of running seals between the interior of the pump and the atmosphere, because such seals often permit air to enter the system in spite of attempts to design seals to prevent leakage. The presence of air in the system results in reduced efliciency and the air must be removed by a purge system.
  • FIGURE 1 is a diagrammatic sectional view of the absorption refrigerating system including the fluid circulating system;
  • FIGURE 2 is an end view of the pump
  • FIGURE 3 is a sectional view taken on line 3--3 of FIGURE 2;
  • FIGURE 4 is a longitudinal sectional view of the motor taken on line 3-3 of FIGURE 2.
  • the absorption system shown is of the type having a single shell 10, a partition 11 separating a high pressure chamber containing a condenser 12 and a generator 14 from a low pressure chamber containing an evaporator 16 and an absorber 18. It should be understood that other arrangements might be used; for instance, the generator 14 and the condenser 12 might be in one shell and the absorber 18 and the evaporator 16 might be in a second shell with conduits therebetween for conducting fluids.
  • the absorber 18 has a coil 20 supplied with cooling fluid from a source 22 to remove the heat from the absorber. This cooling fluid is conducted by a conduit 24 to a cooling coil 26 in the condenser 12 and the cooling fluid leaves the machine through a conduit 28.
  • the cooling coil 26 in the condenser 12 removes the heat from and condenses the refrigerant vapor in the condenser.
  • the generator 14 has a heating coil 3t supplied with heating fluid from a source 32.
  • the heating fluid is discharged from the coil 3th through a conduit 34.
  • the coil 3i heats the absorbent solution in the generator 14 causing it to boil and force refrigerant vapor into the condenser 12.
  • the condensed refrigerant in the condenser 12 flows through an opening 36 into the evaporator 16.
  • the absorbent solution in the absorber 18 reduces the pressure in the absorber i8 and in the evaporator 16 by the absorption of refrigerant vapor, thus causing the refrigerant in the evaporator 16 to boil. A low temperature is thus maintained in the evaporator 16.
  • Evaporator 16 has a coil 37. Fluid from a refrigerating load such as an air conditioning system enters coil 37 through a conduit 38. This fluid is reduced in temperature in the coil 37 and returns to the refrigerating load through conduit 39.
  • a refrigerating load such as an air conditioning system
  • the liquid refrigerant in the evaporator 16 flows through a conduit 40 to a sump 41 and thence through conduit 42 to a pump indicated generally by numeral 43.
  • Pump 43 is driven by a motor indicated generally by numeral 44.
  • the liquid refrigerant is discharged by pump 43 through conduit 45 from which it flows through nozzles 46 into the evaporator 16.
  • Dilute solution flows from absorber 18 through conduit 48 to pump 43.
  • the dilute solution is discharged by pump 43 through conduit 50 which conducts the dilute solution to heat exchanger 52 from which it flows through conduit 54 to the generator 14.
  • Concentrated solution flows from the generator 14 through conduit 56 and thence through heat exchanger 52 from which it flows through conduit 58 to conduit 60.
  • Dilute solution flows from absorber 18 through conduit 62 and thence into conduit 60 to form, with the solution from conduit 58, a solution of intermediate concentration which enters the pump 43 and is discharged thereby through conduit 62 which discharges the intermediate solution into the absorber through nozzles 63.
  • Pump 43 has a pump body 64.
  • a hearing housing 65 having a bearing 66 is mounted on the body 64 at one end and a bearing housing 67 having a bearing 68 is mounted on the pump body 64 at its other end.
  • Bearings 66 and 68 have helical grooves 69 and '70 respectively for conducting the liquid which lubricates and cools the bearings.
  • a shaft 72 is rotatably mounted in the bearings 66 and 68.
  • a refrigerant impeller 73 is mounted on shaft 72 to rotate therewith.
  • Pump 43 has an inlet passageway '74 in fluid flow communication with conduit 42 and impeller 73.
  • a discharge passageway 75 is in fluid flow communication with impeller 73 and conduit 45.
  • Impeller 73 has holes 76 which conduct refrigerant from a chamber 71 at 3 the back side of the impeller to provide a balancing piston effect and reduce the thrust of impeller 73 during operation.
  • An impeller 77 is mounted on shaft 72 to rotate therewith.
  • Pump 43 has an inlet passageway 78 in fluid flow communication with conduit 60 and impeller 77.
  • a discharge passageway 79 is in fiuid flow communication with impeller 77 and conduit 62.
  • An impeller 80 is mounted on shaft 72 to rotate therewith.
  • Pump 43 has an inlet passageway 82 in fluid flow communication with conduit 48 and impeller 80.
  • a discharge passageway 83 is in fluid flow communication with impeller 80 and conduit 50.
  • a rotating seal 84 is mounted on shaft 72 to prevent leakage between bearing housing 65 and inlet passageway 78.
  • a rotating seal 86 is mounted on shaft 72 to prevent leakage between chamber 71 and inlet passageway 82.
  • a rotating seal 88 is mounted on shaft 72 to prevent leakage between bearing housing 67 and inlet passageway 74.
  • the motor 44 has a frame comprising casing 89 and bearing housings 90 and 93.
  • Bearing housing 90 has a bearing 92 and bearing housing 93 has a bearing 94,
  • a shaft 95 is rotatably mounted in bearings 92 and 94.
  • a drive coupling 91 is secured to pump shaft 72 and is in splined engagement with motor shaft 95.
  • a thrust hearing member 96 is mounted on shaft 95 and is supported by the bearing housing 93.
  • the thrust bearing 96 is of the well known Kingsbury type having pivoted shoes.
  • a motor rotor 97 is mounted on shaft 95 within a motor stator 98.
  • a conduit 99 extends from the discharge passageway 75.
  • the refrigerant liquid flows through conduit 101 to motor 44.
  • the refrigerant liquid then flows through a helical groove 102 in bearing 94, thence through thrust bearing 96 and then through the gap 103 between rotor 97 and stator 98. From the gap 103 the fluid flows through a helical groove 104 in bearing 92 and into the space 105 between bearing housings 67 and 90.
  • Some refrigerant liquid flows through helical groove 70 in bearing 68. From space 105 the refrigerant liquid flows through conduits 106 and 107 to the inlet chamber 74 and of the pump 43.
  • Refrigerant liquid from conduit 99 also'flows through conduit 108 to conduit 109 and thence to the helical groove 69 of bearing 66. From bearing 66 the liquid flows through conduit 110 and thence through conduit 111 to conduit 107 from which it flows to inlet chamber 74 of pump 43.
  • valve 112 in conduit 99 and a valve 113 in conduit 107 to shut off the flow in these conduits.
  • Valve 114 is connected to a pressurized source of water external to the system and valve 115 controls the return flow to the source or to waste.
  • valves 112 and 113 are closed and valves 114 and 115 are opened.
  • the flow is then as indicated by the dash line arrows. From valve 114 a portion of the flow is through conduit 109 to hearing 66 and then through conduit 110 and valve 115.
  • the other portion of the flow from valve 114 is successively through conduits 108, 101, motor 44, conduits 106, 111 and valve 115.
  • valves 116 and 117 are provided with hand valves 116 and 117 respectively. During operation of the system these valves are in closed position. However when it is desired to open pump 43 to service the interior parts, valves 116 and 117 may be opened to allow air to enter the pump and displace absorbent solution in the pump.
  • impellers 77 and have equal outside diameters at the inlet and the discharge. This simplifies the machining of the housing and it makes it possible to remove these impellers 77 and 80 from the housing by removing the bearing housing 65. The impellers 77 and 80 may be removed without removing the shaft 72.
  • Impeller 73 is similarly constructed, and it can be removed by first removing the motor 44 and the bearing housing 67,
  • an absorption refrigerating system having a refrigerant and an absorbent
  • said pump having a shaft rotatably mounted therein, a motor drivingly connected to said shaft, a first impeller mounted on said shaft, conduit for conducting absorbent from said absorber to the inlet of said first impeller, conduit for conducting absorbent from the outlet of said first impeller to said generator, a second impeller mounted on said shaft in adjacent back-to-back relationship with said first impeller, conduit for conducting absorbent from a first portion of said absorber to the inlet of said second impeller, conduit for conducting absorbent from the outlet of said second impeller to a second portion of the absorber, a third impeller mounted on said shaft, conduit for conducting refrigerant from a first portion of the evaporator to the inlet of said third impeller and conduit for conducting refrigerant from the outlet of said third imp
  • an absorption refrigerating system having a refrigerant and an absorbent
  • said pump having a shaft rotatably mounted therein, a motor drivingly connected to said shaft, a first impeller mounted on said shaft, conduit for conducting absorbent from said absorber to the inlet of said first impeller, conduit for conducting absorbent from the outlet of said first impeller to said generator, a second impeller mounted on said shaft in adjacent back-to-back relationship with said first impeller, conduit for conducting absorbent from a first portion of said absorber to the inlet of said second impeller, conduit for conducting absorbent from the outlet of said second impeller to a second portion of the absorber, a third impeller mounted on said shaft, conduit for conducting refrigerant from a first portion of the evaporator to the inlet of said third impeller, and conduit for conducting refrigerant from the outlet of said
  • an absorption refrigerating system having a refrigerant and an absorbent
  • said pump comprising an elongated body, a pump shaft, bearings in said body adjacent opposite ends thereof for rotatably supporting said pump shaft in said body, a first centrifugal impeller mounted on said shaft adjacent one end of said body, conduit for conducting absorbent from said absorber to the inlet of said first impeller, conduit for conducting absorbent from the outlet of said first impeller to said generator, a second centrifugal impeller mounted on said pump shaft in adjacent back-to-back relationship with said first impeller, conduit for conducting absorbent from a first portion of said absorber to the inlet of said second impeller, conduit for conducting absorbent from the outlet of said second impeller to a second portion of said absorber, a third impeller mounted on said shaft adjacent the other end of said body from said first end, conduit for
  • an absorption refrigerating system having a refrigerant and an absorbent
  • said pump comprising an elongated body, a pump shaft, a first shaft bearing adjacent one end of said body for rotatably supporting said pump shaft in said body, a first centrifugal impeller mounted on said shaft adjacent said first shaft bearing, a second impeller mounted on said shaft adjacent said first impeller, first conduit for conducting absorbent from said absorber to the inlet of one of said first and second impellers and from the outlet of said one of said first and second impellers to said generator, second conduit for conducting absorbent from a first portion of said absorber to the inlet of the second of said first and second impellers, and from the outlet of said second of said first and second impellers to a second portion of said absorber, a third centrifugal impeller mounted on said shaft, third conduit for conducting ref
  • an absorption refrigeration system having a refrigerant and absorbents
  • said pump comprising an elongated body, a pump shaft, a first shaft bearing adjacent one end of said body for rotatably supporting said pump shaft in said body, said body having adjacent said one end of a first inlet passageway and a first discharge passageway, a first centrifugal impeller mounted on said pump shaft in fluid communication with said first inlet passageway and said first discharge passageway for circulating a first absorbent, said body having a second inlet passageway and a second discharge passageway, a second centrifugal impeller mounted on said pump shaft in fluid communication with said second inlet passageway and said second discharge passageway for circulating a second absorbent, said body having at the other end from said one end a third inlet passageway and a third discharge passageway for refrigerant, a third centrifugal impeller mounted on said pump
  • an absorption refrigeration system having a refrigerant and absorbents
  • said pump comprising an elongated body, a pump shaft, pump shaft bearing means for rotatably supporting said pump shaft in said body, said body having a first inlet passageway and a first discharge passageway, a first centrifugal impeller mounted on said pump shaft in fluid communication with said first inlet passageway and said first discharge passageway for circulating a first absorbent, said body having a second inlet passageway and a second discharge passageway, a second centrifugal impeller mounted on said pump shaft in fluid communication with said second inlet passageway and said second discharge passageway for circulating a second absorbent, said body having a third inlet passageway and a third discharge passageway, a third centrifugal impeller mounted on said pump shaft in fluid communication with said third inlet passageway and said third discharge passageway for circulating refrigerant,
  • an absorption refrigeration system having a refrigerant and absorbents
  • said pump comprising an elongated body, a pump shaft, a first shaft bearing adjacent one end of said body for rotatably supporting said pump shaft in said body, said body having adjacent said one end a first inlet passageway and a first discharge passageway, a first centrifugal impeller mounted on said pump shaft in fluid communication with said first inlet passageway and said first discharge passageway for circulating a first absorbent, said body having a second inlet passageway and a second discharge passageway, a second centrifugal impeller mounted on said pump shaft in fluid communication with said second inlet passageway and said second discharge passageway for circulating a second absorbent, said body having at the other end from said one end a third inlet passageway and a third discharge passageway for refrigerant, a third centrifugal impeller mounted on said pump shaft

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sorption Type Refrigeration Machines (AREA)
US464359A 1965-06-16 1965-06-16 Absorption refrigerating system having pump means circulating absorbent and refrigerant Expired - Lifetime US3296823A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US464359A US3296823A (en) 1965-06-16 1965-06-16 Absorption refrigerating system having pump means circulating absorbent and refrigerant
GB6583/66A GB1084663A (en) 1965-06-16 1966-02-15 Absorption refrigerating system
CH318966A CH513375A (fr) 1965-06-16 1966-03-07 Machine à froid à absorption
DE19661501151 DE1501151A1 (de) 1965-06-16 1966-06-14 Absorptionskuehleinrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US464359A US3296823A (en) 1965-06-16 1965-06-16 Absorption refrigerating system having pump means circulating absorbent and refrigerant

Publications (1)

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US3296823A true US3296823A (en) 1967-01-10

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US464359A Expired - Lifetime US3296823A (en) 1965-06-16 1965-06-16 Absorption refrigerating system having pump means circulating absorbent and refrigerant

Country Status (4)

Country Link
US (1) US3296823A (fr)
CH (1) CH513375A (fr)
DE (1) DE1501151A1 (fr)
GB (1) GB1084663A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466894A (en) * 1968-01-05 1969-09-16 Trane Co Absorption refrigerating system
US3721109A (en) * 1971-06-03 1973-03-20 Trane Co High pressure multiple pump for absorption refrigeration machine
US4691532A (en) * 1984-11-13 1987-09-08 Columbia Gas System Service Corp Dual cooling/heating system energy recovery
US4776176A (en) * 1986-10-20 1988-10-11 Peter Vinz Liquid exchange systems
US4793153A (en) * 1987-06-12 1988-12-27 Recovery Engineering, Inc. Energy recovery apparatus
US4805419A (en) * 1987-03-19 1989-02-21 Hitachi Zosen Corporation Absorption type heat exchanging apparatus
US4843841A (en) * 1987-06-10 1989-07-04 Graco Inc. Energy conserving refrigeration device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389753A (en) * 1943-09-11 1945-11-27 Allis Chalmers Mfg Co High pressure centrifugal pump
US2968250A (en) * 1956-12-05 1961-01-17 United Centrifugal Pumps Pump
US3132493A (en) * 1961-10-10 1964-05-12 Trane Co Absorption refrigerating system
US3145542A (en) * 1963-01-23 1964-08-25 Worthington Corp Self-sustained liquid circulating seal system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2389753A (en) * 1943-09-11 1945-11-27 Allis Chalmers Mfg Co High pressure centrifugal pump
US2968250A (en) * 1956-12-05 1961-01-17 United Centrifugal Pumps Pump
US3132493A (en) * 1961-10-10 1964-05-12 Trane Co Absorption refrigerating system
US3145542A (en) * 1963-01-23 1964-08-25 Worthington Corp Self-sustained liquid circulating seal system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466894A (en) * 1968-01-05 1969-09-16 Trane Co Absorption refrigerating system
US3721109A (en) * 1971-06-03 1973-03-20 Trane Co High pressure multiple pump for absorption refrigeration machine
US4691532A (en) * 1984-11-13 1987-09-08 Columbia Gas System Service Corp Dual cooling/heating system energy recovery
US4776176A (en) * 1986-10-20 1988-10-11 Peter Vinz Liquid exchange systems
EP0264719A3 (fr) * 1986-10-20 1989-12-27 Peter Dr.-Ing. Vinz Procédé et dispositif d'échange continu à quantité commandée de liquides dans des installations de distillaton et dans des circuits frigorifiques à absorption
US4805419A (en) * 1987-03-19 1989-02-21 Hitachi Zosen Corporation Absorption type heat exchanging apparatus
US4843841A (en) * 1987-06-10 1989-07-04 Graco Inc. Energy conserving refrigeration device
US4793153A (en) * 1987-06-12 1988-12-27 Recovery Engineering, Inc. Energy recovery apparatus

Also Published As

Publication number Publication date
DE1501151A1 (de) 1969-10-30
GB1084663A (en) 1967-09-27
CH513375A (fr) 1971-09-30

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AS Assignment

Owner name: TRANE COMPANY, THE

Free format text: MERGER;ASSIGNOR:A-S CAPITAL INC. A CORP OF DE;REEL/FRAME:004334/0523

AS Assignment

Owner name: AMERICAN STANDARD INC., A CORP OF DE

Free format text: MERGER;ASSIGNORS:TRANE COMPANY, THE;A-S SALEM INC., A CORP. OF DE (MERGED INTO);REEL/FRAME:004372/0349

Effective date: 19841226

Owner name: TRANE COMPANY THE

Free format text: MERGER;ASSIGNORS:TRANE COMPANY THE, A CORP OF WI (INTO);A-S CAPITAL INC., A CORP OF DE (CHANGED TO);REEL/FRAME:004372/0370

Effective date: 19840224

AS Assignment

Owner name: A-S CAPITAL INC., A CORP OF DE

Free format text: MERGER;ASSIGNOR:TRANE COMPANY THE A WI CORP;REEL/FRAME:004432/0765

Effective date: 19840224