US4077648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicycle propulsion and speed change means
Assignee: Individual
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Filing: 1976-10-18
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Granted: 1978-03-07
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Expires: 1996-10-18
Abstract
Abstract The invention relates to a novel propulsion means and first and second speed change means for a bicycle. The propulsion means comprises lever means adapted to be pumped up and down by the operator for driving the rear wheel of a bicycle through the speed change means, a propulsion wheel, and sprocket means.
Inventors
- 👤 Man Taik Seul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:24
CPC Classifications
B; B62; B62M; B62M1/00; B62M1/24; B62M1/26; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1526; Y10T74/1532; Y10T74/21; Y10T74/2164; Y10T74/2165
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
145 words
Propulsion means for a foot-operated bicycle comprising: a. rear frame means comprising first and second bifurcated sections; b. a pair of propulsion levers pivotally connected in said second bifurcated sections of said rear frame means, said levers comprising pedals for pumping said levers up and down and first speed change means; c. rear wheel means and sprocket means rotatably mounted in engagement in said bifurcated section, whereby said sprocket means drives said rear wheel means; d. propulsion wheel means rotatably mounted in said second bifurcated section; said propulsion wheel means comprising engaging means to drive said sprocket means; e. second speed change means comprising a pair of driving lever means rotatably mounted in said second bifurcated section in engagement with said propulsion wheel means, whereby said driving lever means drive said propulsion wheel; f. connecting arm means between said first and second speed change means.
Claim 2
Dependent Claim
145 words
Propulsion means for a foot-operated bicycle comprising: a. rear frame means comprising first and second bifurcated sections; b. a pair of propulsion levers pivotally connected in said second bifurcated sections of said rear frame means, said levers comprising pedals for pumping said levers up and down and first speed change means; c. rear wheel means and sprocket means rotatably mounted in engagement in said bifurcated section, whereby said sprocket means drives said rear wheel means; d. propulsion wheel means rotatably mounted in said second bifurcated section; said propulsion wheel means comprising engaging means to drive said sprocket means; e. second speed change means comprising a pair of driving lever means rotatably mounted in said second bifurcated section in engagement with said propulsion wheel means, whereby said driving lever means drive said propulsion wheel; f. connecting arm means between said first and second speed change means.
Claim 3
Dependent Claim
49 words
The propulsion means of claim 1, wherein said first and second speed change means comprise bar means adapted to telescope into and be retained in said respective propulsion lever means and said driving lever, said bar means of said respective lever means connected together by said connecting arm means.
Claim 4
Dependent Claim
34 words
The propulsion means of claim 2, wherein said bar means comprise spur teeth, are biased against spring means, and are controlled by cable means and pawl means, said pawl means controlled by cable means.
Claim 5
Dependent Claim
22 words
The propulsion means of claim 1, wherein said driving lever means and said sprocket means are mounted on ratchet and pawl means.
Claim 6
Dependent Claim
37 words
The propulsion means of claim 1, wherein said engaging means of said propulsion wheel means comprises a series of of roller members disposed circumferentially on said propulsion wheel and adapted to engage cogs of said sprocket means.
Claim 7
Dependent Claim
36 words
The propulsion means of claim 1, wherein said propulsion levers are coordinated in their up and down movement by cable and roller means, said cable means having their ends connected to each of said propulsion levers.
Claim 8
Dependent Claim
19 words
The propulsion means of claim 1, wherein said propulsion wheel means drives said sprocket means by endless chain means.
Claim 9
Dependent Claim
42 words
The propulsion means of claim 1, wherein said propulsion levers are both disposed on one side of said bicycle and one of said propulsion levers comprises a curved portion containing a pedal adapted to extend to the opposite side of said bicycle.
Claim 10
Dependent Claim
35 words
The propulsion means of claim 1, wherein said first and second speed change means are controlled by cable means connected to cable control means disposed on a main frame of said bicycle adjacent the handlebars.
Claim 11
Dependent Claim
101 words
Speed change means for bicycle propelled by propulsion levers adapted to be operated up and down by an operator comprising, first bar means adapted to telescope into said propulsion levers, said first bar means comprising first control means for controlling the extent of telescoping of said first bar means, driving levers adapted to indirectly drive a rear wheel of a bicycle, second bar means adapted to telescope into said driving levers, said second bar means comprising second control means for controlling the extent of telescoping of said second bar means, and connecting arm means between said first and second bar means.
Claim 12
Dependent Claim
101 words
Speed change means for bicycle propelled by propulsion levers adapted to be operated up and down by an operator comprising, first bar means adapted to telescope into said propulsion levers, said first bar means comprising first control means for controlling the extent of telescoping of said first bar means, driving levers adapted to indirectly drive a rear wheel of a bicycle, second bar means adapted to telescope into said driving levers, said second bar means comprising second control means for controlling the extent of telescoping of said second bar means, and connecting arm means between said first and second bar means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |