US3708028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically driven vehicles
Assignee: Boyertown Auto Body Works
•
Filing: 1970-12-21
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Granted: 1973-01-02
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Expires: 1990-12-21
Abstract
Abstract This invention relates to improvements in electrically powered vehicles and more particularly to structure for effecting the quick changes of batteries in such vehicles together with improved features in the electric motor drive.
Inventors
- 👤 P Hafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:00
CPC Classifications
B; B60; B60K; B60K1/00; B60K1/04; B60L; B60L53/00; B60L53/80; B60L50/00; B60L50/50; B60L50/60; B60L50/64; H; H01; H01M; H01M50/00; H01M50/20; H01M50/249; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/7072; Y02T90/00; Y02T90/10; Y02T90/12; Y02T90/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
161 words
In a self-propelled electric vehicle having a frame, driving wheels, an electric motor operatively connected to said driving wheels, a heavy duty battery, an electrical connection from the battery to the motor, the improvement of a pair of longitudinally spaced supports for said battery mounted on said frame, said supports extending laterally outwardly and away from said frame, a reinforced case for said battery, bracket means secured to each end of said case for supporting said case and the battery held thereby on said pair of laterally extending supports when the battery is in operative position a bumper secured to the vehicle frame against which the battery case rests when in operative position, a fixed stop on each of said supports in laterally spaced relation to the bumper permitting vertical movement of said battery case relative to said support to permit removal of said battery but preventing horizontal movement of said battery case relative to said support at all other times.
Claim 2
Dependent Claim
161 words
In a self-propelled electric vehicle having a frame, driving wheels, an electric motor operatively connected to said driving wheels, a heavy duty battery, an electrical connection from the battery to the motor, the improvement of a pair of longitudinally spaced supports for said battery mounted on said frame, said supports extending laterally outwardly and away from said frame, a reinforced case for said battery, bracket means secured to each end of said case for supporting said case and the battery held thereby on said pair of laterally extending supports when the battery is in operative position a bumper secured to the vehicle frame against which the battery case rests when in operative position, a fixed stop on each of said supports in laterally spaced relation to the bumper permitting vertical movement of said battery case relative to said support to permit removal of said battery but preventing horizontal movement of said battery case relative to said support at all other times.
Claim 3
Dependent Claim
38 words
A vehicle constructed in accordance with claim 1 having a face plate secured to the outward side of the battery in spaced relation thereto to provide an air circulating space between the battery case and the face plate.
Claim 4
Dependent Claim
23 words
A vehicle constructed in accordance with claim 1 in which the bumper resiliently positions the battery on the support to prevent movement thereon.
Claim 5
Dependent Claim
18 words
A vehicle constructed in accordance with claim 1 having a push-pull connecting junction box for the electrical connections.
Claim 6
Dependent Claim
16 words
Apparatus in accordance with claim 1 in which said stops are provided with inclined innerfacing surfaces.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |