Patent US4081047A successfully refreshed from Google Patents.
US4081047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorized cart
Assignee: Individual
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Filing: 1976-03-09
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Granted: 1978-03-28
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Expires: 1996-03-09
Abstract
Abstract A motorized cart comprising a wheeled frame, a shroud, and a dirigible free-ended handle, said handle having a longitudinally movable hand grip at the free end thereof, the hand grip having connected thereto means increasing and decreasing the speed of the cart depending only on the pull of the user on the hand grip. There is an automatic brake rendering the cart immobile upon stopping; and a separate brake preventing the cart from sliding rearwardly downhill.
Inventors
- 👤 Walter Lovell
- 👤 Richard Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:01
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/20; B60L50/00; B60L50/50; B60L50/52; B60L50/60; B60L50/66; B60T; B60T7/00; B60T7/12; B60T7/122; B62; B62B; B62B5/00; B62B5/0026; B60L2200/00; B60L2200/30; B60L2250/00; B60L2250/24; B62B2202/00; B62B2202/40; B62B2202/404; B62B2301/00; B62B2301/04; B62B5/0033; B62B5/0036; B62B5/0043; B62B5/0053; B62B5/0069; B62B5/0073; B62B5/04; B62B5/0404; B62B5/0457; B62B5/0461; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/70; Y02T10/7072; Y02T10/72; Y02T90/00; Y02T90/10; Y02T90/14; Y10; Y10S; Y10S280/00; Y10S280/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A power operated cart comprising a wheeled frame, an electric motor and a battery for the motor on said frame, a motor control, a swingable elongated handle, means for mounting said handle, a hand grip on said handle, means mounting said hand grip for longitudinal motion, and a connection between the hand grip and the motor control for varying the power to the motor upon motion of the hand grip in a longitudinal direction, said motor control including a rheostat, the rheostat being operatively connected to said hand grip and comprising a series of turns of wire and a contact movable with the hand grip along said turns of wire, a fixed contact extending along a certain number of turns and forming means for by-passing the rheostat and providing full power direct from the battery to the motor when said hand grip is extended to its furthermost position, and an electric power circuit wherein the rheostat and fixed contact control the motor.
Claim 2
Dependent Claim
162 words
A power operated cart comprising a wheeled frame, an electric motor and a battery for the motor on said frame, a motor control, a swingable elongated handle, means for mounting said handle, a hand grip on said handle, means mounting said hand grip for longitudinal motion, and a connection between the hand grip and the motor control for varying the power to the motor upon motion of the hand grip in a longitudinal direction, said motor control including a rheostat, the rheostat being operatively connected to said hand grip and comprising a series of turns of wire and a contact movable with the hand grip along said turns of wire, a fixed contact extending along a certain number of turns and forming means for by-passing the rheostat and providing full power direct from the battery to the motor when said hand grip is extended to its furthermost position, and an electric power circuit wherein the rheostat and fixed contact control the motor.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |