USRE34680E - Screw tool - Google Patents

Screw tool Download PDF

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Publication number
USRE34680E
USRE34680E US07/742,886 US74288691A USRE34680E US RE34680 E USRE34680 E US RE34680E US 74288691 A US74288691 A US 74288691A US RE34680 E USRE34680 E US RE34680E
Authority
US
United States
Prior art keywords
clamping
core part
switch member
detent
switch
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
US07/742,886
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English (en)
Inventor
Karl Lieser
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.)
Wera Werk Hermann Werner GmbH and Co KG
Original Assignee
Wera Werk Hermann Werner GmbH and Co KG
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 claimed from US07/098,374 external-priority patent/US4884478A/en
Application filed by Wera Werk Hermann Werner GmbH and Co KG filed Critical Wera Werk Hermann Werner GmbH and Co KG
Priority to US07/742,886 priority Critical patent/USRE34680E/en
Application granted granted Critical
Publication of USRE34680E publication Critical patent/USRE34680E/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25B15/00—Screwdrivers
    • B25B15/02—Screwdrivers operated by rotating the handle
    • B25B15/04—Screwdrivers operated by rotating the handle with ratchet action
    • 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
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis

Definitions

  • the present invention relates to a screw tool.
  • a screw tool is known from Federal Republic of Germany OS 3 344 361, in which the driven core part of triangular cross section forms with the outer drive ring part the wedge-shaped clamping spaces for the reception of roller-shaped clamping members arranged in pairs. Between each pair of clamping members there extends a compression spring which acts on them and presses the clamping members into the wedge-shaped clamping spaces.
  • the shifting of the clamping members in order to obtain different directions of drive is effected by means of the centrally mounted switch member from which drivers bent off at an angle extend. In this connection, three such drivers are provided, they extending in each case between a pair of the clamping members.
  • the triangle corners are cut off concentricaly to the center of rotation so that the drivers can move there into the adjacent clamping spaces, regardless of the direction in which the driving of the driven core part is desired.
  • a detent ball which is arranged in the driven core part and which cooperates with the switch member.
  • the object of the present invention is to simplify the construction of a screw tool of the type in question and develop it in such a manner that friction is minimized so as to obtain optimum operating conditions.
  • This object is achieved by one clamping member each (24, 58) lies loosely in it clamping space and is displaceable into its clamping position by the rotation of the drive ring part (3, 34).
  • the driven core part bears the spring-loaded detent ball in a blind hole along one of its angle bisectors.
  • the corresponding detent depressions which cooperate with the ball are located on the inner wall of the cup-shaped switch member.
  • switch positions can be favorably obtained so that the drivers of the switch member which are developed as axially protruding fingers enter in accordance with their purpose into the corresponding position.
  • a stable supporting feature of the switch member is the driven core part which has concentrically extending guide surfaces which are transverse to the angle bisectors and rest against the cup inner wall of the switch member.
  • the bearing length of the switch member is further increased by the central guide collar of the driven core part which enters into the bore in the bottom of the cup of the switch member.
  • the guide sleeve provides a low-friction and nevertheless stable support for the driven core part.
  • the guide sleeve which is equipped with bearing ribs and is arranged turnably in the inner body of the screwdriver handle. This inner body is a part of the drive ring part, which leads to a further saving of structural parts.
  • the ribs are provided on the end regions of the guide sleeve so that even large canting forces are dependably counteracted.
  • roller-shaped clamping members so that a part of their end surface rests against bottom surfaces whichare formed in the region of the clamping spaces by protrusions of the driven core part. It is possible to produce the barrelled sides of the triangle in the case of polygonal turning by means of single-tooth fly cutter. This also results in the outer edges of the bottom surfaces and of the guide surfaces supplementing each other to form a circle, together with advantages from a manufacturing standpoint.
  • Optimum control of the clamping members is obtained by the drivers of the switch member which extend to the bottom surfaces. In this way the axial length of the clamping members corresponds to that of the drivers.
  • the surface of the cup edge of the switch member secures the position of the clamping members in the other direction by gripping the other end surfaces of the roller-shaped clamping members.
  • the detent depressions thereof are so developed that the middle one corresponds in a form-locked manner to the ball entrance cross section.
  • the two adjacennt detent depressions are, however, enlarged in the direction of rotation and provided with a concave bottom.
  • the detent ball then dips into the corresponding adjacent detent depression and is brought into the centering position by the compression spring which acts upon it.
  • the switch member can move over a larger path and this embodiment also makes it possible, upon displacement of the drive ring part in the direction of free-travel, for a slight evasion movement of the drivers to also be obtained without the switch member moving out of its switch position.
  • FIG. 1 shows in enlarged size a longitudinal section through the screw tool according to the first embodiment associated with a screwdriver handle, the switch member being in the center position.
  • FIG. 2 is a section along the line II--II of FIG. 1.
  • FIG. 3 is a section along the line III--III of FIG. 1.
  • FIG. 4 is a section corresponding to FIG. 2, the switch member being shifted into a different switch position in order to change the direction of drive.
  • FIG. 5 is a section similar to FIG. 3, but with the switch ring shifted.
  • FIG. 6 shows on a larger scale a longitudinal section through the screw tool in accordance with the second embodiment.
  • FIG. 7 is a section along the line VII--VII of FIG. 6.
  • FIG. 8 is a view corresponding to FIG. 7 but with the switch member turned into the one switch position.
  • FIG. 9 is also a cross section corresponding to FIG. 7, with the switch member moved into the other switch position.
  • FIG. 10 is a section along the line X--X of FIG. 6, and
  • FIG. 11 is a section along the line XI--XI of FIG. 8.
  • the screw tool developed as a screwdriver in accordance with the first embodiment shown in FIGS. 1 to 5 has a screwdriver handle 1 which is provided with an axially arranged inner member 2. The latter is seated, non-rotatably, in the screwdriver handle 1 and at its lower end forms a drive ring part 3 of larger cross section; see FIG. 1. In the free end of the drive ring part 3 there are produced stepped bore sections 4, 5, 6 in such a manner that the bore sections 4, 5 lie along the height of the drive ring part 3.
  • the bore section 6 of smaller cross section which extends within the inner member 2 receives for rotation a bearing sleeve 7 which is equipped with rotating baring ribs 7',7", said sleeve being integral with a driven core part 8 arranged within the drive ring part 3.
  • the driven core part 8 which is of triangular cross section has barrel-shaped triangle sides 9. Their degree of curvature is less than that of the wall of the bore section 5.
  • the driven core part 8 forms guide surfaces 9' which are concentric to the bore section 5 and transverse to the angle bisectors, said guide surfaces connecting the triangle sides 9 to each other.
  • the barreled triangle sides 9 are formed by polygonal turning, as a result of which protrusions 10 which rest on the bottom of the bore section 5 are formed. Their outer edges 10' and the guide surfaces 9' supplement each other to form a circle; see in particular FIGS. 2 and 4.
  • the driven core part 8 continues in a stepwise guide collar 11. Adjoining the latter there is a stepwise stepped-down extension 11'.
  • the latter serves to receive a clamping spring 12 indicated in dash-dot line, for the frictional holding of a screwdriver insert part of hexagonal cross section.
  • a hexagonal opening 13 is provided in the driven core part 8 on the other side of the clamping spring 12, a bore 13' of larger cross section which passes through the bearing sleeve 7 adjoining it.
  • the guide collar 11 of the driven core part 8 passes through a bore 14 in the cup bottom 15' of a cup-shaped switch member 15.
  • the cup rim surface 15" thereof extends in front of the transition step between the bore sections 4 and 5 and forms there an outwardly directed collar 15'".
  • a lock spring washer 16 which engages into an inner groove 4' of the bore section 4 places itself in front of said collar and holds the switch member 15 and thus also the driven core part 8 in its axially non-displaceable position with respect to the drive ring part 3.
  • the guide surfaces 9' plus driven core part 8 lie against the cup inner wall 15"" and thus increase the bearing length of the switch member 15.
  • Three drivers 17 located at equal angular distance apart extend from the cup rim surface 15". They are shaped as axially protruding fingers and are integral with the switch member 15.
  • the switch member 15 including the drivers 17 can be made of plastic.
  • the switch member 15 is equipped with groove-shaped detent depressions 18, 19 and 19' which extend in axial direction and cooperate with a detent ball 20 of the driven core part 9.
  • the driven core part 8 is provided on one of its angle bisectors with a blind core 21 to receive the detent ball 20 and a compression spring 12 which urges the ball in outward direction.
  • the protruding region of the detent ball 20 engages in form-locked manner into the central detent depression 18 so that in this position all drivers 17 are opposite the guide surfaces 9' of the driven core part 8 of triangular cross section.
  • the two detent depressions 19, 19' which are directly adjacent the central detent depression 18 are enlarged in direction of rotation and provided with a concave bottom.
  • the inner surfaces 17' of the drivers 17 are aligned with the cup inner wall 15"" while the outer surfaces 17" are guided by the wall of the bore section 5 of the drive ring part 3. Otherwise, the drivers 17 extend up to the protrusions 10 of the driven core part 8; see FIG. 1.
  • clamping spaces 23 are formed between the triangle sides 9 of the driven core part 8 and the wall of the bore section 5 between the triangle sides 9 of the driven core part 8 and the wall of the bore section 5 clamping spaces 23 are formed. Each of these clamping spaces 23 forms clamping cornners 23' in its circumferential end regions. In each clamping space 23 there loosely lies a roller-shaped clamping member 24. In the central switch position of the switch member 15 the clamping members 24 lie approximately on a line with the vertex of the barreled triangle sides 9; see FIGS. 2 and 3.
  • the roller-shaped clamping members 24 have a part of their one end surface 25 in front of the bottom surfaces 10" of the protrusions 10 and are accordingly secured in position in one direction by them. The securing in position in the other direction is imparted to the clamping members 24 by the cup rim surface 15" of the switch member 15 which engages over the other end surface 26. Since the drivers 17 extend to the bottom surfaces 10" of the protrusions 10 or even slightly beyond them, along radial control surfaces 17'" are present on the drivers 17.
  • the switch member 15 must be turned in such a way that the detent ball 20 engagably enters the detent depression 19.
  • the drivers 17 extending from the switch member 15 thereby displace the clamping members 24 by a certain amount from their center position in the direction towards the corresponding clamping corner 23' of the clamping spaces 23. If the drive ring part 3 or the screwdriver handle 1 is now turned in the direction indicated by the arrow y, then, due to friction, this displaces the clamping members into the clamping position so that in this way the driven core part 8 is also rotates in the direction indicated by the arrow y.
  • the clamping members 24 Upon the opposite direction of rotation, the clamping members 24 are displaced from the corresponding corners 23', which corresponds to free travel. The drivers 17 and thus the switch member 15 can possibly be turned slightly by the clamping members 24. Nevertheless, the detent ball 20 remains in its detent depression 19.
  • the switch member 15 must be turned in such a way that the detent ball 20 enters into the detent depression 19'.
  • the screw tool has a screwdriver handle 32 to receive the sleeve 33 of a drive ring part 34.
  • a bearing bushing 35 of a driven core part 36 Within the sleeve 33 there is rotatably arranged a bearing bushing 35 of a driven core part 36.
  • the bearing bushing 35 forms an annular groove 37 into which bearing balls 38 of the sleeve 33 engage.
  • the bearing balls 38 are seated in three radial bores 29 of sleeve 33 which are arranged at equal circumferential distances apart; see in particular FIG. 10.
  • a spring washer 40 which is introduced from the outside into the sleeve 33. It prevents plastic material from coming into the radial bores 39 upon the spraying-on of the handle 32 which is to be made from plastic.
  • a bore 41 is produced starting from the end surface 34' of the drive ring part 34.
  • the driven core part 36 which forms an equilateral driven triangle is rotatably mounted in such a manner that the vertices 36' of the triangle are guided on the inner wall 41' of the bore 41.
  • the bearing bushing 35 of the driven core part 36 rotatably receives a stepped tubular shank 42 of a tool-holder sleeve 43.
  • the sleeve is hexagonal in cross section and the end of it which faces the shank 42 enters in form-locked manner into a triangular recess 44 in the driven core part 36.
  • the inner surfaces 44' of the triangular recess 44 extend in this connection parallel to the triangle sides 36" of the triangular drive core part 36. In this way, wall sections 45 which are directed along a triangle are created which come into form-lock with the corresponding polygonal surfaces of the tool-holder sleeve 43.
  • the outer end surfaces 45' of these wall sections 45 which form triangle sides are beveled.
  • the recess 44 is opened in the region of the vertices 36' of the triangle by slitting 46.
  • detent depressions 47 are formed in the region of the triangle vertices 36' to receive detent balls 48 which form the drivers.
  • the detent balls extend in bores 49 of a switch member 50 which is rotatably associated with the drive ring part 34.
  • Three detent balls 48 are provided corresponding to the triangular driven core part and accordingly also three bores 49 spaced circumferentially equally apart. The detent balls 48 are acted on by compression spring 51 which press the detent balls 48 into the detent depressions 47.
  • the switch member 50 forms on its end surfaces facing the drive ring part 34 an edge-side collar 52 which extends into an edge-side annular groove 53 of the drive ring part 34.
  • the switch member 50 forms a central bore 54. The latter is so large that turnability of the switch member 50 is assured.
  • the switch member 50 is imparted assurance against being pulled off by a lock washer 55 of the tool-holder sleeve 43 on which lock washer 55 the switch member 50 rests.
  • the tool-holder sleeve 43 on its part is also secured against being pulled off by a lock washer 56.
  • the latter is seated on the end of the shank 2 of the tool-holder sleeve which extends beyond the bearing bushing 35 and rests against the end surface there of the bearing bushing 35.
  • the tool-holder sleeve 43 is provided on its inside with a polygonal edge 57 for the insertion of the tool, in order to be able to drive the latter.
  • clamping members 53 As coupling means between driven core part 36 and drive ring part 34 there are employed clamping members 53.
  • the latter are located in the region between the inner wall 41' of the bore 41 of the drive ring part 34 and the wall sections 45 of the driven core part 36. In this way three segment-like clamping spaces are created.
  • the roller-shaped clamping members 58 are located in the region of the largest radial dimension of these spaces.
  • the clamping members extend to the bottom of the bore 41 and terminate flush with the end surface 34' of the drive ring part 34 and thus also with the end surface of the driven core part.
  • the ends there of the clamping members are provided with frustoconical bevels 58'.
  • Each clamping member 58 forms a space divider so that clamping corner 59, 60 which extend in wedge shape on both sides thereof are produced.
  • the switch member 50 assumes its central position in accordance with FIGS. 6 and 7, then the detent balls 48 lie in the detent depressions 47 within the region of the vertices 36' of the triangle.
  • the driven core part 36 is carried along in both directions of rotation.
  • the switch member 50 must also be turned in that direction.
  • the detent balls 48 are carried along. They pass through the one slit and pass into the corners 59. There they receive a threefold support, in that they come against the inner wall 41', against the outer surface of the clamping members 58, and against the beveled end surfaces 45' of the wall section 45. In this way the clamping members 48 are urged in the direction of the clamping corners 60 so that upon rotation of the drive ring part 34 in the direction indicated by the arrow x the driven core part 36 is driven along.
  • An oppositely directed rotary movement of the drive ring part does not lead to any driving along of the drive core part 36 so that this is the free travel.
  • FIG. 11 shows that in the switch position the detent ball 48 cannot rest on the bottom of the bore 41 of the drive ring part 34. This is important in order to permit the bringing back of the switch member ring into the central position, in which connection the detent balls after passing through the corresponding slit pass into the detent depressions 47.
  • the switch member ring 50 has been turned in the direction of the arrow y.
  • the detent balls 48 also have left the detent depressions 47 and have entered into the clamping corners 60. There they also receive a three-point support and push the clamping members into the clamping corners 59.
  • the driven core part 36 is therefore also carried along in the direction of this arrow. The opposite rotation of the drive core part then corresponds to the direction of free travel.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Pens And Brushes (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Steering Controls (AREA)
  • Lock And Its Accessories (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Dowels (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Jigs For Machine Tools (AREA)
US07/742,886 1985-10-31 1991-08-09 Screw tool Expired - Lifetime USRE34680E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/742,886 USRE34680E (en) 1985-10-31 1991-08-09 Screw tool

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3538676A DE3538676C1 (de) 1985-10-31 1985-10-31 Schraubwerkzeug mit richtungsumschaltbarem Gesperre
DE3705663A DE3705663C3 (de) 1985-10-31 1987-02-21 Schraubwerkzeug
US07/098,374 US4884478A (en) 1985-10-31 1987-09-17 Screw tool
US07/742,886 USRE34680E (en) 1985-10-31 1991-08-09 Screw tool

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US07/098,374 Reissue US4884478A (en) 1985-10-31 1987-09-17 Screw tool

Publications (1)

Publication Number Publication Date
USRE34680E true USRE34680E (en) 1994-08-02

Family

ID=6284865

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/742,886 Expired - Lifetime USRE34680E (en) 1985-10-31 1991-08-09 Screw tool

Country Status (5)

Country Link
US (1) USRE34680E (de)
EP (1) EP0224693B1 (de)
AT (1) ATE42234T1 (de)
DE (4) DE3538676C1 (de)
ES (1) ES2007555B3 (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535648A (en) * 1995-02-27 1996-07-16 Snap-On Technologies, Inc. Ratcheting screwdriver
US6305516B1 (en) * 2000-03-30 2001-10-23 Yong Lung Wei Ratchet tool
USD623036S1 (en) 2008-11-07 2010-09-07 Milwaukee Electric Tool Corporation Insert bit
US20100252385A1 (en) * 2009-04-03 2010-10-07 Gummow Stephen A Hand tool with stepless locking mechanism
US20110197721A1 (en) * 2008-11-07 2011-08-18 Debaker Joseph M Tool bit
TWI412438B (de) * 2011-07-07 2013-10-21
USD711719S1 (en) 2009-11-06 2014-08-26 Milwaukee Electric Tool Corporation Tool bit
US9156144B2 (en) 2013-03-14 2015-10-13 Stephen A. Gummow Hand tool with stepless locking mechanism
US10022845B2 (en) 2014-01-16 2018-07-17 Milwaukee Electric Tool Corporation Tool bit
WO2020010091A1 (en) * 2018-07-05 2020-01-09 Lexington Medical, Inc. Surgical handle articulation assembly
US10856871B2 (en) 2019-01-16 2020-12-08 Lexington Medical, Inc. Advancing a toothed rack of a surgical handle assembly
USD921468S1 (en) 2018-08-10 2021-06-08 Milwaukee Electric Tool Corporation Driver bit
US11103247B2 (en) 2017-04-07 2021-08-31 Lexington Medical, Inc. Surgical handle assembly
US11116501B1 (en) 2020-04-10 2021-09-14 Lexington Medical, Inc. Surgical handle articulation assemblies
US11166723B2 (en) 2018-09-21 2021-11-09 Lexington Medical, Inc. Surgical handle assembly modes of operation
US11298131B2 (en) 2020-01-15 2022-04-12 Lexington Medical, Inc. Multidirectional apparatus
US11622764B2 (en) 2021-04-27 2023-04-11 Lexington Medical, Inc. Surgical handle assembly
US11638987B2 (en) 2017-12-01 2023-05-02 Milwaukee Electric Tool Corporation Wear resistant tool bit
US11864757B2 (en) 2021-01-15 2024-01-09 Lexington, Medical, Inc. Reloadable cartridge assembly

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3830859A1 (de) * 1988-09-10 1990-03-22 Werner Hermann Wera Werke Schraubendreher
DE19707798A1 (de) * 1997-02-27 1998-09-03 Werner Hermann Wera Werke Freilaufschraubendreher
US6058812A (en) * 1997-06-19 2000-05-09 Robert Schroder Gmbh & Co. Screwing tool with a ratchet
US20030126958A1 (en) 2002-01-09 2003-07-10 Great Neck Saw Manufacturers, Inc. Ratchet driver
DE102010018581A1 (de) * 2010-04-27 2011-10-27 Wiha Werkzeuge Gmbh Schraubendreher
TW201249607A (en) * 2011-06-15 2012-12-16 ri-xiong Xu Screw head having transverse direction changing function
CN104969151B (zh) * 2013-01-31 2019-09-10 惠普发展公司，有限责任合伙企业 具有非有意输入阻止的触摸屏
CN103707233B (zh) 2014-01-24 2016-01-13 上海美瑞实业有限公司 双向做功的棘轮螺丝刀

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1878053A (en) * 1929-12-26 1932-09-20 Henry Coe Lanpher Clutching device
US2497361A (en) * 1944-11-17 1950-02-14 Kesterton Henry Martin Roller type friction clutch
US2584256A (en) * 1949-04-06 1952-02-05 Oren G Brown Roller type ratchet structure
US2685355A (en) * 1949-11-18 1954-08-03 Wright Tool And Forge Company Reversible ratchet wrench mechanism
US2860750A (en) * 1954-10-12 1958-11-18 Avanzati Carlos Alberto Novel jack clutch for use in machinetools and tools
US2997148A (en) * 1958-11-10 1961-08-22 Morgan Dev Lab Inc Rotatable tool with clutch
DE2244222A1 (de) * 1971-09-10 1973-03-15 Stanley Werkzeug Gmbh Drehbares handwerkzeug
DE2240922A1 (de) * 1972-08-19 1974-03-07 Werkzeug Union Gmbh Schraubenschluessel u. dgl. mit einem reversierbaren schaltwerk
DE2503372A1 (de) * 1974-01-29 1975-07-31 Black & Decker Ltd Schraubendreher
US3908487A (en) * 1971-09-10 1975-09-30 Stanley Works Rotary hand tool
US4004666A (en) * 1975-10-23 1977-01-25 Besenbruch-Hofmann, Inc. Reversible socket wrench
US4051935A (en) * 1975-04-18 1977-10-04 Eiji Nakayama Work tool
DE2705134A1 (de) * 1977-02-08 1978-08-10 Fritz Heinemann Umschaltbare, freilaufartige schluessel-knarre fuer hohe drehmomente
US4297924A (en) * 1980-05-13 1981-11-03 Perry M. Lane Ratchet wrench
DE3344361A1 (de) * 1983-12-08 1985-06-13 Ralf 6800 Mannheim Schwarz Schraub- oder eindrehwerkzeug mit universal-handgriff fuer verschiedene einsaetze
US4669339A (en) * 1984-07-09 1987-06-02 Constagrip, Inc. Reversible wrench having instantaneously gripping friction drive

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1859600A (en) * 1930-08-04 1932-05-24 Fairfield Eng Co Friction clutch mechanism
DE850579C (de) * 1950-10-28 1952-09-25 Josef Greven Schraubenschluessel mit Knarre

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1878053A (en) * 1929-12-26 1932-09-20 Henry Coe Lanpher Clutching device
US2497361A (en) * 1944-11-17 1950-02-14 Kesterton Henry Martin Roller type friction clutch
US2584256A (en) * 1949-04-06 1952-02-05 Oren G Brown Roller type ratchet structure
US2685355A (en) * 1949-11-18 1954-08-03 Wright Tool And Forge Company Reversible ratchet wrench mechanism
US2860750A (en) * 1954-10-12 1958-11-18 Avanzati Carlos Alberto Novel jack clutch for use in machinetools and tools
US2997148A (en) * 1958-11-10 1961-08-22 Morgan Dev Lab Inc Rotatable tool with clutch
US3908487A (en) * 1971-09-10 1975-09-30 Stanley Works Rotary hand tool
DE2244222A1 (de) * 1971-09-10 1973-03-15 Stanley Werkzeug Gmbh Drehbares handwerkzeug
DE2240922A1 (de) * 1972-08-19 1974-03-07 Werkzeug Union Gmbh Schraubenschluessel u. dgl. mit einem reversierbaren schaltwerk
DE2503372A1 (de) * 1974-01-29 1975-07-31 Black & Decker Ltd Schraubendreher
US4051935A (en) * 1975-04-18 1977-10-04 Eiji Nakayama Work tool
US4004666A (en) * 1975-10-23 1977-01-25 Besenbruch-Hofmann, Inc. Reversible socket wrench
DE2705134A1 (de) * 1977-02-08 1978-08-10 Fritz Heinemann Umschaltbare, freilaufartige schluessel-knarre fuer hohe drehmomente
US4297924A (en) * 1980-05-13 1981-11-03 Perry M. Lane Ratchet wrench
DE3344361A1 (de) * 1983-12-08 1985-06-13 Ralf 6800 Mannheim Schwarz Schraub- oder eindrehwerkzeug mit universal-handgriff fuer verschiedene einsaetze
US4669339A (en) * 1984-07-09 1987-06-02 Constagrip, Inc. Reversible wrench having instantaneously gripping friction drive

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5535648A (en) * 1995-02-27 1996-07-16 Snap-On Technologies, Inc. Ratcheting screwdriver
US6305516B1 (en) * 2000-03-30 2001-10-23 Yong Lung Wei Ratchet tool
USD662802S1 (en) 2008-11-07 2012-07-03 Milwaukee Electric Tool Corporation Tool bit
USD663187S1 (en) 2008-11-07 2012-07-10 Milwaukee Electric Tool Corporation Tool bit
USD631723S1 (en) 2008-11-07 2011-02-01 Milwaukee Electric Tool Corporation Insert bit
US10065294B2 (en) 2008-11-07 2018-09-04 Milwaukee Electric Tool Corporation Tool bit
US20110197721A1 (en) * 2008-11-07 2011-08-18 Debaker Joseph M Tool bit
USD646547S1 (en) 2008-11-07 2011-10-11 Milwaukee Electric Tool Corporation Tool bit
US11407090B2 (en) 2008-11-07 2022-08-09 Milwaukee Electric Tool Corporation Tool bit
USD623036S1 (en) 2008-11-07 2010-09-07 Milwaukee Electric Tool Corporation Insert bit
US8418587B2 (en) 2008-11-07 2013-04-16 Milwaukee Electric Tool Corporation Tool bit
US9849570B2 (en) 2008-11-07 2017-12-26 Milwaukee Electric Tool Corporation Tool bit
US8800407B2 (en) 2008-11-07 2014-08-12 Milwaukee Electric Tool Corporation Method of manufacturing a tool bit
US20100252385A1 (en) * 2009-04-03 2010-10-07 Gummow Stephen A Hand tool with stepless locking mechanism
US7975573B2 (en) 2009-04-03 2011-07-12 Gummow Stephen A Hand tool with stepless locking mechanism
USD711719S1 (en) 2009-11-06 2014-08-26 Milwaukee Electric Tool Corporation Tool bit
TWI412438B (de) * 2011-07-07 2013-10-21
US9156144B2 (en) 2013-03-14 2015-10-13 Stephen A. Gummow Hand tool with stepless locking mechanism
US10022845B2 (en) 2014-01-16 2018-07-17 Milwaukee Electric Tool Corporation Tool bit
US11103247B2 (en) 2017-04-07 2021-08-31 Lexington Medical, Inc. Surgical handle assembly
US11958168B2 (en) 2017-12-01 2024-04-16 Milwaukee Electric Tool Corporation Wear resistant tool bit
US11638987B2 (en) 2017-12-01 2023-05-02 Milwaukee Electric Tool Corporation Wear resistant tool bit
WO2020010091A1 (en) * 2018-07-05 2020-01-09 Lexington Medical, Inc. Surgical handle articulation assembly
US11376003B2 (en) 2018-07-05 2022-07-05 Lexington Medical, Inc. Surgical handle articulation assembly
USD921468S1 (en) 2018-08-10 2021-06-08 Milwaukee Electric Tool Corporation Driver bit
USD955843S1 (en) 2018-08-10 2022-06-28 Milwaukee Electric Tool Corporation Driver bit
US11166723B2 (en) 2018-09-21 2021-11-09 Lexington Medical, Inc. Surgical handle assembly modes of operation
US11617583B2 (en) 2019-01-16 2023-04-04 Lexington Medical, Inc. Advancing a toothed rack of a surgical handle assembly
US10856871B2 (en) 2019-01-16 2020-12-08 Lexington Medical, Inc. Advancing a toothed rack of a surgical handle assembly
US11298131B2 (en) 2020-01-15 2022-04-12 Lexington Medical, Inc. Multidirectional apparatus
US11116501B1 (en) 2020-04-10 2021-09-14 Lexington Medical, Inc. Surgical handle articulation assemblies
US11864757B2 (en) 2021-01-15 2024-01-09 Lexington, Medical, Inc. Reloadable cartridge assembly
US11622764B2 (en) 2021-04-27 2023-04-11 Lexington Medical, Inc. Surgical handle assembly

Also Published As

Publication number Publication date
EP0224693A1 (de) 1987-06-10
DE3705663A1 (de) 1988-05-19
ATE42234T1 (de) 1989-05-15
DE3538676C1 (de) 1987-04-30
EP0224693B1 (de) 1989-04-19
ES2007555B3 (es) 1989-06-16
DE8717251U1 (de) 1988-07-14
DE3705663C3 (de) 1995-08-31
DE3662851D1 (en) 1989-05-24

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