EP0224624A2 - Ratschenschlüssel mit offenem Maul - Google Patents

Ratschenschlüssel mit offenem Maul Download PDF

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Publication number
EP0224624A2
EP0224624A2 EP85308532A EP85308532A EP0224624A2 EP 0224624 A2 EP0224624 A2 EP 0224624A2 EP 85308532 A EP85308532 A EP 85308532A EP 85308532 A EP85308532 A EP 85308532A EP 0224624 A2 EP0224624 A2 EP 0224624A2
Authority
EP
European Patent Office
Prior art keywords
wrench
pawl
tooth
jaw
nut
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.)
Withdrawn
Application number
EP85308532A
Other languages
English (en)
French (fr)
Other versions
EP0224624A3 (de
Inventor
Ercele A. Desantis
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.)
Individual
Original Assignee
Individual
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
Priority to US06/585,524 priority Critical patent/US4554847A/en
Application filed by Individual filed Critical Individual
Priority to EP85308532A priority patent/EP0224624A3/de
Publication of EP0224624A2 publication Critical patent/EP0224624A2/de
Publication of EP0224624A3 publication Critical patent/EP0224624A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle

Definitions

  • Open-ended wrenchs are among the most important tools that the mechanic carries.
  • the wrenchs are used for securing nuts to bolts in many applications.
  • the nuts may be shaped square or hexagonal and the open-ended wrench is useful for securing either.
  • the nuts are measured between two parallel sides thereof by a line perpendicular to both sides through the middle.
  • the wrench open end has two parallel faces or jaws adapted to fit easily over the nut. When the wrench is positioned it can be turned in the appropriate direction to either secure the nut against a fixture or to loosen the nut. In many applications, the wrench cannot be turned a full 360° because another object is in the path of the handle. The wrench has to then be removed from the nut and repositioned free from the interferring object.
  • Ratchet wrenchs are also well known in the art. However, these wrenchs are the box-type which fits over the top of the nut. Typically, the ratchet wrench includes a ratcheting handle and a nut driver which fits over the handle. This creates a unit of substantial width compared with the typical open end wrench. In many instances, it is difficult to get a ratchet wrench over the top of the nut because of lack of space and it is necessary to use the open-ended wrench. In the past, each time it is desired to move the wrench it has to be slipped off the nut and reapplied at a different angle and then turned in appropriate amount. This must be repeated many times where a small angular area exists in which the wrench can be turned.
  • an open-ended wrench could be designed which could be moved against the direction of turning to a new position without physically being removed from the nut.
  • Such as open-ended wrench would have all the ease of use of the traditional ratchet-type wrench and the additional ability to fit in the small spaces.
  • an open-end wrench used to secure a nut comprising a main body and a lower jaw member.
  • the main body forms the first jaw and the back of the open end.
  • the lower jaw member is pivotably connected to the main body to pivot between first and second positions respectively displacing said lower jaw from said upper jaw by first and second distances. The first distance allows the wrench to rotate the nut as it is rotated and the second distance allows the wrench to rotate around the nut as it is rotated.
  • the open end ratchet wrench 10 consists of three principle parts, the main body 12, the lower jaw member 14, and the pawl 16.
  • Lower jaw member 14 is connected to body 12 by a pin 18 and pawl 16 is connected to body 12 by a pin 20.
  • Member 14 rotates around pin 18 and pawl 16 rotates around pin 20 in a manner which will be describe hereafter.
  • Open-end 22 When member 14 is connected to body 12, open-end 22 is formed. Open-end 22 consists of upper jaw 24, a lower jaw 26 and a back 28. Open-end 22 is sized so that the distance between upper jaw 24 and lower jaw 26 is slightly larger than the size of a nut 30 which may be inserted into open end 22. Back 28 is rounded so that the point 32 of a hexagon nut 30 may fit near back 28.
  • Lower jaw member 14 has a cam extension 34 extending therefrom.
  • the thickness of the main part of member 14 forming lower jaw 26 is the same thickness as is main body 12.
  • Cam 34 is thinner than either lower jaw member 14 or main body 12.
  • a cut is made horizontally through body 12 in the area adjacent to where lower jaw member 14 is to be placed.
  • Cam 34 is placed within cut 36 and held there by pin 18. In this manner, cam 14 rotates around pin 18.
  • Cut 36 should be made sufficiently large so that cam 34 can rotate as member 14 rotates. While not shown in Figure 2, it should be noted that pawl 16 is also positioned substantially within cut 36.
  • Figure 3 a top cut-away view of wrench 10 is shown with the cut area being shown so that the entire lower jaw member 14 and pawl 16 are shown.
  • Figure 3 shows the normal position of member 14 and pawl 16 in solid lines and the rotated positions of member 14, referenced as 14a, and the rotated positions of pawl 16, referenced as 16a, shown in dashed lines.
  • Cam extension 34 which extends within cut 36, has an area 38 adapted to receive a spring 40, the other end of which is inserted into a hole 42 drilled into main body 12.
  • cam 34 includes two teeth 44 and 46.
  • the back end 48 of pawl 16 is normally positioned against tooth 44 to hold lower jaw member 14 into position shown by the solid line.
  • pawl 16 rotates about pin 20 to the position shown by the dashed lines shown as 16a.
  • the back end 48 of pawl 16 is above tooth 44 allowing lower jaw member 14 to rotate downward above pin 18 to the position shown in the dashed lines as 14a.
  • the back 48 of pawl 16 rests against the now raised tooth 46a preventing lower jaw 14 from further rotation.
  • Pawl 16 has an area 52 adapted to receiving spring 54 the other end of which is inserted into hole 56 drilled into main body 12.
  • Spring 54 biases pawl 20 downward so that it will normally attempt to be positioned against tooth 44 as long as lower jaw member 14 is in the normal position shown by the solid line. This usually is the case as a result of the biasing effect of spring 40 on member 14.
  • Pawl 16 should extend beyond back 28 at a position below (towards lower jaw member 14) the position of point 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP85308532A 1984-03-02 1985-11-25 Ratschenschlüssel mit offenem Maul Withdrawn EP0224624A3 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US06/585,524 US4554847A (en) 1984-03-02 1984-03-02 Open end ratchet wrench
EP85308532A EP0224624A3 (de) 1985-11-25 1985-11-25 Ratschenschlüssel mit offenem Maul

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85308532A EP0224624A3 (de) 1985-11-25 1985-11-25 Ratschenschlüssel mit offenem Maul

Publications (2)

Publication Number Publication Date
EP0224624A2 true EP0224624A2 (de) 1987-06-10
EP0224624A3 EP0224624A3 (de) 1987-11-19

Family

ID=8194447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85308532A Withdrawn EP0224624A3 (de) 1984-03-02 1985-11-25 Ratschenschlüssel mit offenem Maul

Country Status (1)

Country Link
EP (1) EP0224624A3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225266A (en) * 1988-11-25 1990-05-30 Andrew Pasley Open ended ratchet spanner
US7806025B2 (en) 2007-08-15 2010-10-05 The Stanley Works Self-adjusting wrench
CN102335894A (zh) * 2010-07-16 2012-02-01 胡厚飞 往复扳动的开口扳手
TWI392562B (zh) * 2011-04-22 2013-04-11 Wen Terng Sheu Open ratchet wrench
TWI482687B (de) * 2012-10-05 2015-05-01

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635930A (en) * 1924-06-28 1927-07-12 Peter A Forsdahl Wrench
US2721493A (en) * 1954-01-25 1955-10-25 Thomas O Bergland Open-end ratchet wrench
US2846912A (en) * 1956-07-09 1958-08-12 Alan G Day Adjustable, slidable jaw, open-end wrench
DE6604348U (de) * 1967-02-21 1970-01-08 Ted Neff Schraubenschluessel
US3901106A (en) * 1973-03-09 1975-08-26 Burnice J Causey Open-end ratchet wrench

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2225266A (en) * 1988-11-25 1990-05-30 Andrew Pasley Open ended ratchet spanner
US7806025B2 (en) 2007-08-15 2010-10-05 The Stanley Works Self-adjusting wrench
CN102335894A (zh) * 2010-07-16 2012-02-01 胡厚飞 往复扳动的开口扳手
CN102335894B (zh) * 2010-07-16 2014-07-09 胡厚飞 往复扳动的开口扳手
TWI392562B (zh) * 2011-04-22 2013-04-11 Wen Terng Sheu Open ratchet wrench
TWI482687B (de) * 2012-10-05 2015-05-01

Also Published As

Publication number Publication date
EP0224624A3 (de) 1987-11-19

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