Patent US4730506A successfully refreshed from Google Patents.
US4730506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed changing apparatus usable for a small car
Assignee: Suzuki Motor Corp
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Filing: 1987-06-23
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Granted: 1988-03-15
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Expires: 2007-06-23
Abstract
Abstract A speed changing apparatus usable for a small car of the type including a bar-shaped steering handle and a speed changing gear mechanism having plural forward movement stages and a single backward movement stage is disclosed which is characterized in that shifting of speed changing gears to any one of the forward and backward movement stages is controlled by rotational displacement of a rotary type change cam and the apparatus is provided with a stopper mechanism adapted to limit rotation of the change cam within the range of an angle of rotation which is determined by the forward movement stages, wherein the stopper mechanism is released from the operative state by use of an actuating lever which is disposed on the handle, thereby assuring inhibition of an occurrence of damage or injury of gears due to incorrect handling by virtue of arrangement which is so made that shifting to the backward movement is achieved by very simple operation but shifting of any gear cannot be achieved unless handling is performed in the presence of a distinct intention for backward movement.
Inventors
- 👤 Minoru Kageyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:36
CPC Classifications
B; B62; B62K; B62K5/00; B62K5/01; B62K5/02; B62K5/027; F; F16; F16H; F16H63/00; F16H63/02; F16H63/08; F16H63/16; F16H63/18; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19279; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20085
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
A speed changing apparatus usable for a saddle-riding type car including a bar-shaped steering handle and a speed changing gear mechanism having plural forward movement stages and a single backward movement stage, said speed changing gear mechanism being located in a transmission case having a side wall, characterized in that shifting of speed changing gears to any one of said forward and backward movement stages is controlled by rotational displacement of a drum-shape rotary type change cam mounted in said transmission case and the apparatus is provided with a stopper means passing through said transmission case side wall and extending substantially parallel to said change cam for axial cooperation with engagement means formed at a side surface of said change cam and adapted to limit rotation of said change cam within the range of an angle of rotation which is determined by said forward movement stages, said stopper means being released from an operative state by means of an actuating member disposed on said bar-shaped steering handle.
Claim 2
Dependent Claim
167 words
A speed changing apparatus usable for a saddle-riding type car including a bar-shaped steering handle and a speed changing gear mechanism having plural forward movement stages and a single backward movement stage, said speed changing gear mechanism being located in a transmission case having a side wall, characterized in that shifting of speed changing gears to any one of said forward and backward movement stages is controlled by rotational displacement of a drum-shape rotary type change cam mounted in said transmission case and the apparatus is provided with a stopper means passing through said transmission case side wall and extending substantially parallel to said change cam for axial cooperation with engagement means formed at a side surface of said change cam and adapted to limit rotation of said change cam within the range of an angle of rotation which is determined by said forward movement stages, said stopper means being released from an operative state by means of an actuating member disposed on said bar-shaped steering handle.
Claim 3
Dependent Claim
56 words
A speed changing apparatus as defined in claim 1, characterized in that said stopper means is a stopper pin urged by resilient force and having its foremost end inserted into said engagement means which is a circular groove, said stopper pin being disengaged from said circular cam by means of said actuating member on the handle.
Claim 4
Dependent Claim
67 words
A speed changing apparatus as defined in claim 1, characterized in that said stopper means is a stopper pin urged by resilient force and having its foremost end projected into cooperation with said engagement means which is formed by two projections projecting from said side surface of said change cam, said stopper pin being disengaged from the projections by means of said actuating member on the handle.
Claim 5
Dependent Claim
53 words
A speed changing apparatus as defined in claim 2, characterized in that the rearmost end of said stopper pin and said actuating member are connected to each other by means of a wire and said actuating member is operated to pull said wire thereby disengaging said stopper pin from said partially circular groove.
Claim 6
Dependent Claim
47 words
A speed changing apparatus as defined as claim 3, characterized in that the rearmost end of said stopper pin and said actuating member are connected to each other by means of a wire and said actuating member is operated to disengage said stopper pin from said projections.
Claim 7
Dependent Claim
50 words
A speed changing apparatus as defined in claim 2, characterized in that a part of said stopper pin is machined to form a rack gear adapted to mesh with a pinion whereby said stopper pin is pulled by rotating said pinion by means of said actuating member on said handle.
Claim 8
Dependent Claim
50 words
A speed changing apparatus as defined in claim 3, characterized in that a part of said stopper pin is machined to form a rack gear adapted to mesh with a pinion whereby said stopper pin is pulled by rotating said pinion by means of said actuating member on said handle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |