US3200918A - Overrunning clutch - Google Patents

Overrunning clutch Download PDF

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Publication number
US3200918A
US3200918A US270364A US27036463A US3200918A US 3200918 A US3200918 A US 3200918A US 270364 A US270364 A US 270364A US 27036463 A US27036463 A US 27036463A US 3200918 A US3200918 A US 3200918A
Authority
US
United States
Prior art keywords
pawl
ratchet
shaft
drive arm
drive
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
US270364A
Other languages
English (en)
Inventor
Robert F Horn
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US270364A priority Critical patent/US3200918A/en
Priority to JP1532564A priority patent/JPS419484B1/ja
Priority to GB12518/64A priority patent/GB988664A/en
Priority to DE19641450108 priority patent/DE1450108A1/de
Application granted granted Critical
Publication of US3200918A publication Critical patent/US3200918A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03DAPPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/003Film feed or extraction in development apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00Freewheels or freewheel clutches
    • F16D41/12Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like

Definitions

  • This invention relates to an overrunning clutch and, more particularly, to a unidirectional ratchet and pawl clutch.
  • an object of my invention is to provide a simple and reliable overrunning clutch.
  • a pawl is provided with a drive arm having a substantial length and being formed so that a mjor portion of the length thereof is supported by the ratchet teeth drivable by the pawl.
  • the added length results in a distributed flexing with a resultant decrease in fatigue, while the auxiliary support by the ratchet teeth enhances the effective drive force attainable.
  • FIG. 1 is a plan view of one embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1;
  • FIG. 3 is a plan view of another embodiment of the present invention.
  • FIG. 1 I have shown in FIG. 1 a gear shown as a ring gear ratchet having inwardly projecting teeth 11 engageable by the tip 12 of a drive arm 13.
  • the drive arm 13 is a portion of a pawl arrangement 14 secured to a drivable shaft 15 by a sleeve portion 16.
  • the pawl be formed by a process such as injection molding with a configuration, wherein a bend in the arm support region 18 is provided initially so that a major portion of the drive arm 13 is closely adjacent to the ratchet teeth 11 when the tip 12 is in the driving position.
  • the drive arm 13 obtains substantially auxiliary support from the ring gear ratchet 10.
  • the ratchet tooth 11b is presently supporting the central section of the drive arm 13.
  • Increased driving pressure tends to result in additional supice port from the ratchet teeth 11a and 110. dependence of support, the drive arm 13 may be substantially longer than its thickness would dictate if it were unsupported. A shorter length allowing a self-supporting drive arm increases fatigue problems, especially when using plastics as are suitable for reliable operations within solutions which tend to dissolve or oxidize metals.
  • the pawl sleeve 16 is drivingly coupled to the shaft 15 by a press fit over a knurled region, as indicated at 20.
  • rotation of the shaft 15 in a counterclockwise direction (FIG. 1) drives the ring gear ratchet 10 and thereby drives an outer shaft or roller 22 secured thereto.
  • the roller 22 overlaps the shaft 15 in the region of the pawl 14.
  • the driving connection between the tip 12 and one of the ratchet teeth 11 is released, whereby the tip 12 slides over consecutive teeth with the length of the drive arm 13 enhancing a relatively soft and quiet operation and resulting in a lower overdrive torque.
  • the low overdrive torque is a particularly valuable characteristic when the roller 22 is used to transport films and the like during a developing process.
  • the ratchet teeth 11 are individually symmetrical so that the pawl 14 may drive the ring gear ratchet 10 and its roller 22 in either direction in accordance with placement of the pawl 14 on the shaft 15.
  • FIGS. 1 and 2 illustrate an arrangement wherein the central portion of the drive arm 13 is supported by gear teeth which prevent its outward deflection
  • the pres ent invention is also usable in constructions where the ratchet lies inside the pawl sleeve 16.
  • FIG. 3 one such arrangement is shown wherein a sleeve 16 of a pawl 14' is supported within the roller 22.
  • An elongated drive arm 13' couples a drive tip 12' to an arm support region 13'.
  • gear teeth 11 During driving of the roller 22 by the shaft 15, a major portion of the drive arm 13 is supported by gear teeth 11.
  • An overrunning ratchet drive clutch for selectively coupling two coaxial shafts having an overlapping region comprising:
  • a pawl sleeve removably secured to the inner shaft with in the overlapping region
US270364A 1963-04-03 1963-04-03 Overrunning clutch Expired - Lifetime US3200918A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US270364A US3200918A (en) 1963-04-03 1963-04-03 Overrunning clutch
JP1532564A JPS419484B1 (de) 1963-04-03 1964-03-21
GB12518/64A GB988664A (en) 1963-04-03 1964-03-25 Pawl and ratchet mechanisms
DE19641450108 DE1450108A1 (de) 1963-04-03 1964-04-02 UEberholkupplung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US270364A US3200918A (en) 1963-04-03 1963-04-03 Overrunning clutch

Publications (1)

Publication Number Publication Date
US3200918A true US3200918A (en) 1965-08-17

Family

ID=23031042

Family Applications (1)

Application Number Title Priority Date Filing Date
US270364A Expired - Lifetime US3200918A (en) 1963-04-03 1963-04-03 Overrunning clutch

Country Status (4)

Country Link
US (1) US3200918A (de)
JP (1) JPS419484B1 (de)
DE (1) DE1450108A1 (de)
GB (1) GB988664A (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486597A (en) * 1967-11-02 1969-12-30 William Charles Carlton Moulded one-way clutch
US3516603A (en) * 1968-08-02 1970-06-23 Gen Motors Corp Tamper-proof odometer one-way drive
US3589486A (en) * 1968-07-19 1971-06-29 Kienzle Apparate Gmbh One way clutch device
US3602932A (en) * 1969-07-14 1971-09-07 Bissell Inc Floor sweeper with improved drive coupling
US3667307A (en) * 1968-07-19 1972-06-06 Kienzle Apparate Gmbh Stepping clutch device
US3667671A (en) * 1970-08-21 1972-06-06 Gen Motors Corp Anti-reverse odometer one-way drive
US3865220A (en) * 1972-05-30 1975-02-11 Jr William A Thompson Bicycle hub
US3928862A (en) * 1974-05-02 1975-12-23 Polaroid Corp Photographic film advancing and processing apparatus having a protective device
US4346749A (en) * 1980-08-18 1982-08-31 Sears, Roebuck And Company Motor and roller support for window shades and the like
US4553869A (en) * 1983-09-12 1985-11-19 International Business Machines Corp. Buckling one way clutch
WO1987003033A1 (en) * 1985-11-06 1987-05-21 Bundschuh Robert L Retraction device for doors or windows
US5000721A (en) * 1987-08-20 1991-03-19 Itt Corporation Clutch apparatus
US5088581A (en) * 1991-01-30 1992-02-18 Eaton Corporation One-way clutch
US5835805A (en) * 1996-04-08 1998-11-10 Fuji Photo Film Co., Ltd. Film transporting device of camera and clutch structure and camera with magnetic recording function
US6470982B2 (en) 2001-02-08 2002-10-29 Mattel, Inc. Children's ride-on vehicle with mechanical speed control
US20120186054A1 (en) * 2011-01-26 2012-07-26 Nivarox-Far S.A. Pawl lock assembly system
EP2392975A3 (de) * 2010-06-03 2018-01-24 Patek Philippe SA Genève Drehorgan mit unidirektionaler Kupplung
US20190162249A1 (en) * 2017-11-24 2019-05-30 Kabo Tool Company One-way inertial rotational device
US11040270B1 (en) 2020-04-29 2021-06-22 Dennis Griffin, Sr. Billiard cue storage assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2141799B (en) * 1983-06-03 1986-07-16 Diehl Gmbh & Co An adjusting ratchet mechanism for a time switch

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444570A (en) * 1948-07-06 Drive for counter numeral wheels
US2500973A (en) * 1946-04-04 1950-03-21 Ackerman Charles Slicing machine
US2551000A (en) * 1946-05-31 1951-05-01 Studebaker Corp Overrunning clutch
FR1239977A (fr) * 1959-07-20 1960-09-02 Perfectionnements apportés aux mécanismes d'encliquetage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444570A (en) * 1948-07-06 Drive for counter numeral wheels
US2500973A (en) * 1946-04-04 1950-03-21 Ackerman Charles Slicing machine
US2551000A (en) * 1946-05-31 1951-05-01 Studebaker Corp Overrunning clutch
FR1239977A (fr) * 1959-07-20 1960-09-02 Perfectionnements apportés aux mécanismes d'encliquetage

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3486597A (en) * 1967-11-02 1969-12-30 William Charles Carlton Moulded one-way clutch
US3589486A (en) * 1968-07-19 1971-06-29 Kienzle Apparate Gmbh One way clutch device
US3667307A (en) * 1968-07-19 1972-06-06 Kienzle Apparate Gmbh Stepping clutch device
US3516603A (en) * 1968-08-02 1970-06-23 Gen Motors Corp Tamper-proof odometer one-way drive
US3602932A (en) * 1969-07-14 1971-09-07 Bissell Inc Floor sweeper with improved drive coupling
US3667671A (en) * 1970-08-21 1972-06-06 Gen Motors Corp Anti-reverse odometer one-way drive
US3865220A (en) * 1972-05-30 1975-02-11 Jr William A Thompson Bicycle hub
US3928862A (en) * 1974-05-02 1975-12-23 Polaroid Corp Photographic film advancing and processing apparatus having a protective device
US4346749A (en) * 1980-08-18 1982-08-31 Sears, Roebuck And Company Motor and roller support for window shades and the like
US4553869A (en) * 1983-09-12 1985-11-19 International Business Machines Corp. Buckling one way clutch
WO1987003033A1 (en) * 1985-11-06 1987-05-21 Bundschuh Robert L Retraction device for doors or windows
US5000721A (en) * 1987-08-20 1991-03-19 Itt Corporation Clutch apparatus
US5088581A (en) * 1991-01-30 1992-02-18 Eaton Corporation One-way clutch
US5835805A (en) * 1996-04-08 1998-11-10 Fuji Photo Film Co., Ltd. Film transporting device of camera and clutch structure and camera with magnetic recording function
US6470982B2 (en) 2001-02-08 2002-10-29 Mattel, Inc. Children's ride-on vehicle with mechanical speed control
EP2392975A3 (de) * 2010-06-03 2018-01-24 Patek Philippe SA Genève Drehorgan mit unidirektionaler Kupplung
US20120186054A1 (en) * 2011-01-26 2012-07-26 Nivarox-Far S.A. Pawl lock assembly system
US10088804B2 (en) * 2011-01-26 2018-10-02 Nivarox-Far S.A. Pawl lock assembly system
US20190162249A1 (en) * 2017-11-24 2019-05-30 Kabo Tool Company One-way inertial rotational device
US10704616B2 (en) * 2017-11-24 2020-07-07 Kabo Tool Company One-way inertial rotational device
US11040270B1 (en) 2020-04-29 2021-06-22 Dennis Griffin, Sr. Billiard cue storage assembly

Also Published As

Publication number Publication date
JPS419484B1 (de) 1966-05-20
GB988664A (en) 1965-04-07
DE1450108A1 (de) 1972-02-24

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