US2117213A - Electric switch with manometric control - Google Patents

Electric switch with manometric control Download PDF

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Publication number
US2117213A
US2117213A US93423A US9342336A US2117213A US 2117213 A US2117213 A US 2117213A US 93423 A US93423 A US 93423A US 9342336 A US9342336 A US 9342336A US 2117213 A US2117213 A US 2117213A
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United States
Prior art keywords
disc
casing
diaphragm
flexible
fluid
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
US93423A
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English (en)
Inventor
Rodanet Charles Hilaire Henri
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.)
ED Jaeger SA
Original Assignee
ED Jaeger SA
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 ED Jaeger SA filed Critical ED Jaeger SA
Application granted granted Critical
Publication of US2117213A publication Critical patent/US2117213A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm

Definitions

  • 'Ihis invention relates to an electric switch with manometric control, and is particularly characterized by the fact that the fluid, which by pressure controls the operation of the switch, acts on a flexible diaphragm capable, upon being distorted, of acting on the movable contact of the electric switch.
  • the main object of the present invention is to have a switch control provided with a flexible l0 diaphragm mounted in a fluid-tight manner within a casing in which are also arranged the contacts of the switch, and which may also be secured, at its periphery, on a rigid d sc of substantially conical shape and on the periphery of which bears thebentdown edge or flange of another disc on which are mounted the fixed and movable contacts of the switch.
  • a further object is to have a movable contact of the switch constituted'by a flexible blade secured, at one of its ends, to the disc having the bent down edge or flange, and provided, at its other end, with a contact piece, a flnger, mounted on this blade, passing through both rigid discs, preferably at their center, so as to be capable of coming directly or indirectly in contact with the flexible diaphragm when the latter becomes distorted under the influence of the pressure of the fluid, and the mentioned finger may be adjustably mounted on said flexible blade carrying the movable contact of the switch.
  • Fig. 1 is a side view of a. form of construction of an improved apparatus according to the invention.
  • Fig. -2 is a diametral section made according to line 11-11 of Fig. 3.
  • Fig. 3 is an elevation of Fig. 1, the cover plate being removed.
  • Fig. 4 is a partial section made according to line IVIV of Figs. 2 and 3.
  • Fig. 5 is a partial'section made according to line V--V of Figs. 2 and 3.
  • Fig. 6 is a diametral section similar to Fig. 2, showing a constructional modification of an improved apparatus according to the invention.
  • Fig. '7 is an elevation of Fig. 6, the cover plate being removed.
  • Fig. 8 is a partial section made according to line VIII-VIII of Figs. 6 and 7.
  • the improved'electric switch with manometric control is composed of a metallic casing I of substantially cylindrical shape and terminating, on its rear face, in an axial cylindrical screw threaded projection 2 serving to secure the apparatus on a suitable support (not shown), as well as to connect the said apparatus to the pressure fluid conduit.
  • the casing is provided, on its periphery, with a part 3 in the shape of a nut having eight sides, or the like, facilitating the fltting up of said apparatus.
  • the cylindrical interior of the casing I is so made as to constitute a shoulder l on which rests, once assembled, the resilient diaphragm 5 of the manometric box.
  • This manometric box inserted substantially without play within the casing l, is constituted by the flexible diaphragm 5 connected at its periphery to a rigid frustumshaped disc 6 having at its center a perforation I. On this disc 6 bears the bent down edge 8 of a metal disc 9 on which the contacts are mounted as will be described later on.
  • the fluid-tight chamber ll formed between the diaphragm 5 and the rear wall of the casing I, communicates, through an axial perforation l2, with the pressure fluid piping, or the like, connected to the screw-threaded projection 2 by any suitable means.
  • the disc 9 and at its upper part is secured, by means of a screw it or the like, the conductingflexible blade I! constituting the movable contact of the switch.
  • the conductingflexible blade I! constituting the movable contact of the switch.
  • a contact piece I8 which normally bears upon a fixed contact piece is secured, by any suitable means, on disc 9, but electrically insulated therefrom.
  • this flxed contact piece i9 is riveted on a conducting flange 20 having a suitable connecting tongue 2!.
  • This conducting flange 20 is secured on disc 9 by means of two screws 22, members and washers 23, made of insulating material, ensuring elec tric insulation, ontheone hand, between the flange 20 and, on the other hand, between the screws 22 and disc 9 (Fig. 5).
  • the casing I is closed by a disc 25, of insulating material, which is preferably beaded in said casing I, a perforation being provided in this disc for the passage of the connecting tongue 2 I.
  • Such apparatus are utilizable in all cases in which it is necessary to close an electric circuit when the pressure of the fluid controlled by the manonietric device falls below a certain value, and these contact apparatus are particularly utilizable for indicating the lack of supply of lubricating oil to an internal combustion en gine; in this case, they are perfectly applicable the device described in the French Patent No. 794,303 of November 19, 1934.
  • a casing having an open end and so shaped as to have near its back wall a shoulder, a flexible diaphragm hearing at its periphery on said shoulder for forming a fluid-tight chamber between said diaphragm and said back wall of the casing, a rigid frustum-shapeddisc resting on the periphery of said flexible diaphragm and having a perforation at its center, a cup-shaped member resting by its bent down edge on said disc and also having at its center a.
  • perforation located opposite the perforation of sald disc, the casing, dia phragm, disc and cup being connected together in a fluid-tight manner by welding, a flexible blade secured, by one of its ends, on said cup, 3X45 movable contact mounted at the free end of said flexible blade, 8. stationary-contact mounted on said cup so as to be electrically insulated therefrom and with which said movable contact. normally engages, means passing through the perforations of the disc and of the cup and placed between said flexible blade and said flexible dla-.
  • a casing having an open end and so shaped as to have near its back wall a. shoulder, a threaded tubular projection provided on said back wall of the casing and adapted to be connected to a. piping supplying the fluid under pressure, a flexible diaphragm bearing at its periphery on said shoulder for forming a fluid-tight chamber between said diaphragm and said back wall of the casing, a rigid frustum-shaped disc resting on the periphery of said flexible diaphragm and having a perforation at its center, a cup-shaped member resting by its bent down edge on said disc and also having at its center a perforation located opposite the perforation of said disc, the casing, diaphragm, disc and cup being connected together in a fluid-tight manner by welding, a flexible metal blade seis electrically insulated therefrom, a movable contact mounted at the free end of said flexible blade.
  • a stationary contact'mountcd on saidcup so as to be electrically insulatedthereirom and with which said movable contact normally ensases.
  • a first metallic connection member connected to said stationary contact.
  • a second metallic connection member connected to said flexible blade.
  • an adjustable screw mounted on said flexperforations oi the disc and of the cup and inbetvqeen said flexible diaphragm and the end or said adjustable screw. so that when said diaphragm distorts, said movable and stationary contacts are moved apart, a cover iitted on theopen end of said casina ior enclosing the various members contained in the latter. said cover havingt'oholesiorthepassaseofsaidflrstand second metallic connection members.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
US93423A 1936-06-18 1936-07-30 Electric switch with manometric control Expired - Lifetime US2117213A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR819191T 1936-06-18

Publications (1)

Publication Number Publication Date
US2117213A true US2117213A (en) 1938-05-10

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ID=9269278

Family Applications (1)

Application Number Title Priority Date Filing Date
US93423A Expired - Lifetime US2117213A (en) 1936-06-18 1936-07-30 Electric switch with manometric control

Country Status (2)

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US (1) US2117213A (fr)
FR (1) FR819191A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438512A (en) * 1942-02-21 1948-03-30 Int Standard Electric Corp Pneumatic switch
US2571617A (en) * 1948-07-30 1951-10-16 Speed Dev Company Ltd Fluid pressure operated switch
US2824919A (en) * 1954-10-05 1958-02-25 Allen V C Davis Pressure responsive switch
US2954734A (en) * 1947-10-17 1960-10-04 James M Kendall Torpedo exploder mechanism
US4112474A (en) * 1977-01-27 1978-09-05 General Electric Company Capacitor protective device
US4438305A (en) 1981-10-13 1984-03-20 Sor, Inc. Fire resistant pressure switch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968547C (de) * 1951-04-18 1958-03-06 Speed Dev Company Ltd Elektrische, auf Druckunterschiede ansprechende Schaltvorrichtung
FR2454002A1 (fr) * 1979-04-12 1980-11-07 Lustig Yves Dispositif d'asservissement d'une source de puissance debitant un fluide par son robinet d'utilisation
US5278367A (en) * 1992-12-08 1994-01-11 Texas Instruments Incorporated High pressure responsive switch and method for making same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438512A (en) * 1942-02-21 1948-03-30 Int Standard Electric Corp Pneumatic switch
US2954734A (en) * 1947-10-17 1960-10-04 James M Kendall Torpedo exploder mechanism
US2571617A (en) * 1948-07-30 1951-10-16 Speed Dev Company Ltd Fluid pressure operated switch
US2824919A (en) * 1954-10-05 1958-02-25 Allen V C Davis Pressure responsive switch
US4112474A (en) * 1977-01-27 1978-09-05 General Electric Company Capacitor protective device
US4438305A (en) 1981-10-13 1984-03-20 Sor, Inc. Fire resistant pressure switch

Also Published As

Publication number Publication date
FR819191A (fr) 1937-10-12

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