US3848891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Front wheel drive cycle
Assignee: Individual
•
Filing: 1973-08-06
•
Granted: 1974-11-19
•
Expires: 1993-08-06
Abstract
Abstract A manually powered front wheel drive cycle particularly adaptable for use by paraplegic individuals. A drive train has a first drive linkage operably connected to front wheel means for rotation of the front wheel upon actuation of the drive train. The first drive linkage extends upward to a power transmission assembly. A second drive linkage extends rearward from the power transmission assembly to a hand crank mechanism. A tiller bar is connected between the power transmission assembly and the hand crank mechanism. Operation of the hand crank mechanism by the rider effects movement of the cycle. Lateral movement of the hand crank mechanism rotates the tiller bar and front wheel means for steerage of the cycle.
Inventors
- 👤 A Vittori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:08
CPC Classifications
B; B62; B62M; B62M1/00; B62M1/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
187 words
A cycle comprising: a frame; rear wheel means rotatably mounted on a rear portion of the frame; front wheel means, means mounting the front wheel means on a front portion of the frame, said means mounting the front wheel means being rotatable about a generally upright axis to steer the cycle; seat means mounted on the frame; tiller means releasably and adjustably secured to the means mounting the front wheel means, said tiller means being longitudinally adjustable relative to said mounting means and having a first portion extended in a forward direction and a second portion extended in a rearward direction from said mounting means; support means connected between the first portion of the tiller means and the means mounting the front wheel means, said support means and said tiller means being of fixed length. drive means having a first drive linkage drivably connecting the front wheel with the forward portion of the tiller means and a second drive linkage connecting the first drive linkage and the rear portion of the tiller means, and means for imparting torque to the rear portion of the second drive linkage.
Claim 2
Dependent Claim
187 words
A cycle comprising: a frame; rear wheel means rotatably mounted on a rear portion of the frame; front wheel means, means mounting the front wheel means on a front portion of the frame, said means mounting the front wheel means being rotatable about a generally upright axis to steer the cycle; seat means mounted on the frame; tiller means releasably and adjustably secured to the means mounting the front wheel means, said tiller means being longitudinally adjustable relative to said mounting means and having a first portion extended in a forward direction and a second portion extended in a rearward direction from said mounting means; support means connected between the first portion of the tiller means and the means mounting the front wheel means, said support means and said tiller means being of fixed length. drive means having a first drive linkage drivably connecting the front wheel with the forward portion of the tiller means and a second drive linkage connecting the first drive linkage and the rear portion of the tiller means, and means for imparting torque to the rear portion of the second drive linkage.
Claim 3
Dependent Claim
22 words
The cycle of claim 1 wherein: the means for imparting torque to the second drive linkage comprises a double hand crank assembly.
Claim 4
Dependent Claim
35 words
The cycle of claim 1 wherein: the rear wheel means comprise a first wheel rotatably mounted on one side of the frame and a second wheel rotatably mounted on the opposite side of the frame.
Claim 5
Dependent Claim
18 words
The cycle of claim 1 including: means mounting the seat means on the rear portion of the frame.
Claim 6
Dependent Claim
49 words
The cycle of claim 1 wherein: the first drive linkage comprises a chain and sprocket drive including a sprocket drivably connected to the front wheel and a second sprocket rotatably mounted on the forward end of the tiller means and a chain trained about said first and second sprockets.
Claim 7
Dependent Claim
72 words
The cycle of claim 5 wherein: said second drive linkage means comprises a pair of first bevel gears drivably connected to the second sprocket, a pair of second bevel gears drivably connected to the means for imparting torque to the second drive linkage and a shaft connecting one of the bevel gears of the first pair of bevel gears with one of the bevel gears of the second pair of bevel gears.
Claim 8
Dependent Claim
38 words
The cycle of claim 6 wherein: the means for imparting torque to the second drive linkage comprises a double handle crank assembly, one of said bevel gears being mounted on a portion of the double handle crank assembly.
Claim 9
Dependent Claim
80 words
The cycle of claim 5 wherein: the second drive linkage comprises a chain and sprocket drive having a first sprocket drivably connected to the second sprocket on the forward end of the tiller means, a second sprocket rotatably mounted on the rear end of the tiller means and an endless chain trained abOut said first and second sprockets, said second sprocket of the second drive linkage being drivably connected to the means for imparting torque to the second drive linkage.
Claim 10
Dependent Claim
35 words
The cycle of claim 8 wherein: said means for imparting torque to the second drive linkage means comprises a double handle crank assembly, said second sprocket being mounted on a portion of said crank assembly.
Claim 11
Dependent Claim
14 words
The cycle of claim 1 wherein: the tiller means comprises an elongated tubular member.
Claim 12
Dependent Claim
32 words
The cycle of claim 1 including: foot rest means attached to the frame, said foot rest means being located generally below said means for imparting torque to the second drive linkage 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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |