US3828627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-speed hub
Assignee: ZF Friedrichshafen AG
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Filing: 1972-11-28
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Granted: 1974-08-13
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Expires: 1992-11-28
Abstract
Abstract A three-speed hub for a bicycle or like vehicle has a driver and a hub shell coaxially rotatable on a stationary shaft, planetary gearing, and a coupling sleeve manually shifted for coupling the driver to the ring gear or the planet carrier of the gearing. One of two pawl-and-ratchet clutches is normally coupled to the ring gear to transmit torque to the hub shell but is released when cooperating abutments on the coupling sleeve and the ring gear axially retract the ring gear whereupon torque is transmitted from the planet carrier to the hub by the second clutch. The pawl carrier of the latter may simultaneously carry the brake cone of a coaster brake. Three transmission ratios are available.
Inventors
- 👤 H Schwerdhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:48
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/46; F16H3/48; F16H3/52; F16H3/54; B; B62; B62M; B62M11/00; B62M11/04; B62M11/14
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
327 words
A multiple-speed hub for a bicycle and like vehicle comprising, in combination: a. a shaft having an axis; b. a driver member and a hub shell member mounted on said shaft for coaxial rotation; c. gear means operatively interposed between said members for rotating said hub shell member at a selected one of a plurality of different output speeds when said driver member rotates at a predetermined input speed, said gear means including 1. an internally toothed ring gear rotatable about said axis and axially movable between two positions, 2. a planet carrier rotatable about said axis, 3. a sun gear fixed on said shaft and axially offset from said driver member, 4. a planet gear rotatable on said carrier in simultaneous meshing engagement with the internal teeth of said ring gear and with said sun gear; d. first and second overrunning pawl-and-ratchet clutches including respective pawl carriers axially juxtaposed for rotation about said axis on a portion of said planet carrier spaced from said sun gear in a direction away from said driver member, a pawl on each pawl carrier, ratchet teeth on said hub shell member associated with each pawl, and yieldably resilient means biasing the pawl of each clutch toward a position of driving engagement with the associated ratchet teeth; e. first coupling means axially movable for alternatively coupling said driver member to said planet carrier and to said ring gear for joint rotation; f. cooperating abutment means on said coupling means and said ring gear for moving said ring gear between said positions thereof in response to a predetermined axial movement of said coupling means; g. second coupling means on said ring gear engaging the pawl carrier of said first clutch in one of said two axial positions of the ring gear for joint rotation of the engaged pawl carrier with said ring gear; and h. means for transmitting rotary motion from said planet carrier to the pawl carrier of said second clutch.
Claim 2
Dependent Claim
327 words
A multiple-speed hub for a bicycle and like vehicle comprising, in combination: a. a shaft having an axis; b. a driver member and a hub shell member mounted on said shaft for coaxial rotation; c. gear means operatively interposed between said members for rotating said hub shell member at a selected one of a plurality of different output speeds when said driver member rotates at a predetermined input speed, said gear means including 1. an internally toothed ring gear rotatable about said axis and axially movable between two positions, 2. a planet carrier rotatable about said axis, 3. a sun gear fixed on said shaft and axially offset from said driver member, 4. a planet gear rotatable on said carrier in simultaneous meshing engagement with the internal teeth of said ring gear and with said sun gear; d. first and second overrunning pawl-and-ratchet clutches including respective pawl carriers axially juxtaposed for rotation about said axis on a portion of said planet carrier spaced from said sun gear in a direction away from said driver member, a pawl on each pawl carrier, ratchet teeth on said hub shell member associated with each pawl, and yieldably resilient means biasing the pawl of each clutch toward a position of driving engagement with the associated ratchet teeth; e. first coupling means axially movable for alternatively coupling said driver member to said planet carrier and to said ring gear for joint rotation; f. cooperating abutment means on said coupling means and said ring gear for moving said ring gear between said positions thereof in response to a predetermined axial movement of said coupling means; g. second coupling means on said ring gear engaging the pawl carrier of said first clutch in one of said two axial positions of the ring gear for joint rotation of the engaged pawl carrier with said ring gear; and h. means for transmitting rotary motion from said planet carrier to the pawl carrier of said second clutch.
Claim 3
Dependent Claim
7 words
a planet carrier rotatable about said axis,
Claim 4
Dependent Claim
7 words
a planet carrier rotatable about said axis,
Claim 5
Dependent Claim
97 words
A hub as set forth in claim 1, wherein said portion of said planet carrier is sleeve-shaped, said planet carrier having a flange portion radially projecting from said sleeve-shaped portion and carrying said planet gear, the pawl carrier of said first clutch being mounted on said sleeve-shaped portion for rotation about said axis axially closely adjacent said flange portion, said pawl carrier of said first clutch being annular about said axis and having two substantially parallel and planar circumferential faces, said pawl of the first clutch being coextensive with said annular pawl carrier in an axial direction.
Claim 6
Dependent Claim
14 words
a sun gear fixed on said shaft and axially offset from said driver member,
Claim 7
Dependent Claim
14 words
a sun gear fixed on said shaft and axially offset from said driver member,
Claim 8
Dependent Claim
46 words
A hub as set forth in claim 2, wherein said planet carrier of said second clutch is annular, fixedly fastened to said sleeve-shaped portion, and radially projects from the same, the pawl of said second clutch being axially substantially coextensive with said fixedly fastened pawl carrier.
Claim 9
Dependent Claim
56 words
A hub as set forth in claim 1, further comprising cooperating brake means respectively secured to the pawl carrier of said second clutch and to said shaft, said pawl carrier of the second clutch being axially movable on said portion of said planet carrier toward and away from a position of engagement of said brake means.
Claim 10
Dependent Claim
214 words
a planet gear rotatable on said carrier in simultaneous meshing engagement with the internal teeth of said ring gear and with said sun gear; d. first and second overrunning pawl-and-ratchet clutches including respective pawl carriers axially juxtaposed for rotation about said axis on a portion of said planet carrier spaced from said sun gear in a direction away from said driver member, a pawl on each pawl carrier, ratchet teeth on said hub shell member associated with each pawl, and yieldably resilient means biasing the pawl of each clutch toward a position of driving engagement with the associated ratchet teeth; e. first coupling means axially movable for alternatively coupling said driver member to said planet carrier and to said ring gear for joint rotation; f. cooperating abutment means on said coupling means and said ring gear for moving said ring gear between said positions thereof in response to a predetermined axial movement of said coupling means; g. second coupling means on said ring gear engaging the pawl carrier of said first clutch in one of said two axial positions of the ring gear for joint rotation of the engaged pawl carrier with said ring gear; and h. means for transmitting rotary motion from said planet carrier to the pawl carrier of said second clutch.
Claim 11
Dependent Claim
214 words
a planet gear rotatable on said carrier in simultaneous meshing engagement with the internal teeth of said ring gear and with said sun gear; d. first and second overrunning pawl-and-ratchet clutches including respective pawl carriers axially juxtaposed for rotation about said axis on a portion of said planet carrier spaced from said sun gear in a direction away from said driver member, a pawl on each pawl carrier, ratchet teeth on said hub shell member associated with each pawl, and yieldably resilient means biasing the pawl of each clutch toward a position of driving engagement with the associated ratchet teeth; e. first coupling means axially movable for alternatively coupling said driver member to said planet carrier and to said ring gear for joint rotation; f. cooperating abutment means on said coupling means and said ring gear for moving said ring gear between said positions thereof in response to a predetermined axial movement of said coupling means; g. second coupling means on said ring gear engaging the pawl carrier of said first clutch in one of said two axial positions of the ring gear for joint rotation of the engaged pawl carrier with said ring gear; and h. means for transmitting rotary motion from said planet carrier to the pawl carrier of said second clutch.
Claim 12
Dependent Claim
51 words
A hub as set forth in claim 1, wherein said pawl carriers are axially contiguous to each other, and said hub shell carries a plurality of axially elongated, circumferentially offset, internal ribs, respective portions of said ribs constituting the ratchet teeth associated with the pawls of said first and second clutches.
Claim 13
Dependent Claim
111 words
A hub as set forth in claim 1, wherein said portion of said planet carrier is sleeve-shaped, said planet carrier having a flange portion radially projecting from an axially terminal part of said sleeve-shaped portion adjacent said sun gear and carrying said planet gear, the pawl carrier of said first clutch being mounted for rotation on said axially terminal part, said second coupling means including an annular flange on said pawl carrier of the first clutch, said flange being axially coextensive with the flange portion of said planet carrier, and engaging means on said annular flange and on said ring gear cooperating in said one axial position of said ring gear.
Claim 14
Dependent Claim
35 words
A hub as set forth in claim 6, wherein said engaging means include radial projections on said annular flange and on said ring gear for circumferential engagement with each other in said one axial position.
Claim 15
Dependent Claim
41 words
A hub as set forth in claim 7, wherein said ring gear carries a plurality of axially elongated, circumferentially offset, straight, internal ribs, respective longitudinal portions of said ribs constituting said internal teeth and said radial projections on said ring gear.
Claim 16
Dependent Claim
40 words
A hub as set forth in claim 8, wherein the angular circumferential spacing of the rib portions constituting said radial projections is greater than the angular, circumferential spacing of said ratchet teeth associated with the pawl of said second clutch.
Claim 17
Dependent Claim
100 words
A hub as set forth in claim 1, further comprising manually operable means for axially moving said first coupling means between three axial positions and for thereby axially moving said ring gear between said two positions thereof, said first coupling means coupling said driver member to said planet carrier in a first position of said first coupling means and to said ring gear in the second and third positions of said first coupling means, and said ring gear being in said one axial position thereof when said first coupling means is in the first and second positions of the same.
References Cited (Backward Citations)
US2143798A
Cited
US2180527A
Cited
US3113652A
Cited
US3180167A
Cited
US3299745A
Cited
US3536171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |