Motorized cart

• US 4,081,047 A
• Filed: 03/09/1976
• Issued: 03/28/1978
• Est. Priority Date: 03/09/1976
• Status: Expired due to Term

• Current Assignee: Richard Lawrence, Walter Lovell
• Original Assignee: Richard Lawrence, Walter Lovell
• Inventors: Lawrence, Richard, Lovell, Walter
• Primary Examiner(s): Peters, Jr., Joseph F.
• Assistant Examiner(s): Pekar, John A.
• Application Number:
  US05/665,233
• Time in Patent Office: 749 Days
• Field of Search: 180/19 S, 180/19 H, 180/19 R, 280/DIG. 5, 188/82.9, 188/82.7, 188/29, 188/30, 188/139, 192/3 H
• US Class Current: 180/19.3
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2200/30 Trolleys
• CPC Class Codes: B60L 2250/24 by lever actuation
• CPC Class Codes: B60L 50/52 characterised by DC-motors
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60T 7/122 for locking of reverse movement
• CPC Class Codes: B62B 2202/404 Golf articles, e.g. golfbags
• CPC Class Codes: B62B 2301/04 comprising a wheel pivotable about a substantially vertical axis, e.g. swivelling castors
• CPC Class Codes: B62B 5/0026 Propulsion aids
• CPC Class Codes: B62B 5/0043 One motor drives one wheel
• CPC Class Codes: B62B 5/0053 Arrangements of batteries
• CPC Class Codes: B62B 5/0073 Measuring a force
• CPC Class Codes: B62B 5/0404 automatic
• CPC Class Codes: B62B 5/0461 with positive engagement
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y10S 280/05 Motorized golf carts

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.

Claims

1. 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.