Motor vehicles – Steered by walking attendant – Handle movement controls vehicle drive
Patent
1987-08-31
1989-11-07
Hill, Mitchell J.
Motor vehicles
Steered by walking attendant
Handle movement controls vehicle drive
180 651, 248129, 280 62, D34 18, B62D 5104
Patent
active
048785547
ABSTRACT:
A motorized cart for the transportation of at least one mail bag includes a box-like frame having a plurality of hooks spaced along its top surface to which may be attached one or more mail bags. A pair of wheels are fixedly mounted to an axle disposed along the bottom surface of the frame. A third wheel is attached to the bottom surface of the frame to provide additional locomotive stability. To obviate manual transportation of the cart, the frame houses a motor which drives the rotation of the pair of wheels, a battery which supplies an initial electrical current to the motor, and a starter/generator which re-circulates electrical current to the motor. The revolution speed of the motor is controlled with a throttle actuated by twisting the handle mounted to the frame. A centrifugal clutch engages the motor and the axle once the motor attains a certain threshold revolution speed. A hand brake lever, disposed just below the handle and actuated by squeezing the hand brake lever towards the handle, is interconnected to a frictional assembly on the third wheel for the purpose of decreasing the vehicle's translocational velocity.
REFERENCES:
patent: 2673671 (1954-03-01), Williams
patent: 2924287 (1960-02-01), Bramley
patent: 3515313 (1970-06-01), Siems
patent: 3662803 (1972-05-01), Kuvik
patent: 3920260 (1975-11-01), Downing
Hill Mitchell J.
Kriegsman Irving M.
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