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US3572455A Expired / Lapsed US ⏱️ 0.0 years remaining

Self-propelled, electric, three wheel maintenance cart

Assignee: Individual
•
Filing: 1968-05-24
•
Granted: 1971-03-30
•
Expires: 1988-05-24
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Abstract

Abstract The invention includes a three-wheeled, self-propelled, all purpose vehicle with a large cart-type body, driven by an electric motor on a box-shaped slotted fork just forward of the handlebars and utilizing storage batteries, connected in series, with provision for recharging, with a power train to connect and drive a single, front traction wheel, and with a banana seat for the operator, just behind the motor, over a control box fitted with speed control and reverse lever setting contacts, and brake and on-off pedals at the front end of a large cart bed area with a low center of gravity, and with box-type seats running longitudinally along both sides of the cart for the storage batteries, and also with a high tailgate in rear, when the UP position, but for use in the DOWN position as a low-angle ramp. The cart operates air pollution free. Maintenance is simple because both the motor and the batteries are easily accessible, Use inside buildings or warehouses as well as outside on pavements, turf or bare ground is favored because of its quite operation, freedom from exhaust fumes and safely from fire or explosion because there is no flammable fuel tank.

Inventors

  • 👤 Vern Alvin Brueske

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 23:36
CPC Classifications
B; B60; B60K; B60K1/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 152 words
An electric motor powered vehicle for use in general purpose hauling by an operator, the improvement comprising: vehicle platform frame which connects by horizontal tube to a vertical pin, fitted with roller and ball bearings, in the boxlike fork of a single driven front wheel, and two smaller rear idler wheels on a single axle, both connected to said frame, the assembly of which parts create a low center of gravity cart with covered battery boxes along the extent of both sides and with a hinged tailgate closure at the rear end and the electric motor speed control box centrally located at the front end, surmounted by a seat for the operator, and with handlebars for steering, and an electric motor with drive mechanism to the driven wheel for operating, mounted on the top of the boxlike fork between the handlebars, and foot and hand control means for separation of the vehicle.
Claim 2
Dependent Claim 152 words
An electric motor powered vehicle for use in general purpose hauling by an operator, the improvement comprising: vehicle platform frame which connects by horizontal tube to a vertical pin, fitted with roller and ball bearings, in the boxlike fork of a single driven front wheel, and two smaller rear idler wheels on a single axle, both connected to said frame, the assembly of which parts create a low center of gravity cart with covered battery boxes along the extent of both sides and with a hinged tailgate closure at the rear end and the electric motor speed control box centrally located at the front end, surmounted by a seat for the operator, and with handlebars for steering, and an electric motor with drive mechanism to the driven wheel for operating, mounted on the top of the boxlike fork between the handlebars, and foot and hand control means for separation of the vehicle.
Claim 3
Dependent Claim 19 words
An electric motor powered vehicle as set forth in claim 1 with provision for seats over the battery boxes.

References Cited (Backward Citations)

US1346915A Cited
US1492701A Cited
US1663299A Cited
US2767800A Cited
US3219137A Cited
US3099326A Cited
US3212596A Cited
US3204791A Cited
US3352440A Cited
US3416837A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-03-29 1974-09-28 1975-03-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-29 1978-09-28 1979-03-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-29 1982-09-28 1983-03-30 $7700.00 Window Closed / Lapsed

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