Patent US4593779A successfully refreshed from Google Patents.
US4593779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination internal combustion and electrical drive vehicles
Assignee: STILL GmbH
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Filing: 1985-06-14
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Granted: 1986-06-10
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Expires: 2005-06-14
Abstract
Abstract A combination internal combustion and electric drive vehicle is provided having a frame, a battery suspended from the frame between two parallel spaced axles carrying supporting wheels, at least one elective drive motor driving at least one wheel, an internal combustion engine on the frame drivingly connected to a generator and connections between the generator and each of the electric motors and the battery whereby the battery may be recharged and electric motor may be driven by the generator and the electric motor may be driven by the battery independently of the generator.
Inventors
- 👤 Erich Krohling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:44
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/40; B60K6/42; B60K6/46; B60L; B60L50/00; B60L50/50; B60L50/60; B60L50/61; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/951
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
205 words
A combination internal combustion and electric drive vehicle particularly for carrying a payload in and out of enclosed areas, comprising a frame, supporting wheels on a pair of spaced generally parallel axles on said frame, at least one electric drive motor drivingly connected to at least one of said supporting wheels, a battery container suspended from said frame between said axles, a battery in said container, an internal combustion engine on said frame, a first electric generator connected to and driven by said internal combustion engine and first electrical connections from said first generator to said electric drive motor whereby electrical energy from said first generator may be used to drive said electric drive motor when the vehicle is outside an enclosed area and second electrical connections from said battery to the electric drive motor for driving said drive motor independently of the internal combustion engine and with the internal combustion engine stopped in enclosed areas, a second constant voltage generator driven by said internal combustion engine connected to said battery whereby said battery is being recharged at all times when the internal combustion engine is operating and a switch box for selectively connecting said battery to said second generator or said electric drive motor.
Claim 2
Dependent Claim
205 words
A combination internal combustion and electric drive vehicle particularly for carrying a payload in and out of enclosed areas, comprising a frame, supporting wheels on a pair of spaced generally parallel axles on said frame, at least one electric drive motor drivingly connected to at least one of said supporting wheels, a battery container suspended from said frame between said axles, a battery in said container, an internal combustion engine on said frame, a first electric generator connected to and driven by said internal combustion engine and first electrical connections from said first generator to said electric drive motor whereby electrical energy from said first generator may be used to drive said electric drive motor when the vehicle is outside an enclosed area and second electrical connections from said battery to the electric drive motor for driving said drive motor independently of the internal combustion engine and with the internal combustion engine stopped in enclosed areas, a second constant voltage generator driven by said internal combustion engine connected to said battery whereby said battery is being recharged at all times when the internal combustion engine is operating and a switch box for selectively connecting said battery to said second generator or said electric drive motor.
Claim 3
Dependent Claim
51 words
A vehicle according to claim 1 having a platform on said frame and characterized in that the battery is located underneath the platform and can be removed from the side of the vehicle, and the internal-combustion engine and generators are located at least essentially above the platform level over the battery.
Claim 4
Dependent Claim
26 words
A vehicle according to one of claims 1 or 2, characterized in that the internal-combustion engine is perpendicular to the longitudinal median plane of the vehicle.
Claim 5
Dependent Claim
22 words
A vehicle according to claim 3, characterized in that the first generator is coupled directly to the shaft of the internal-combustion engine.
Claim 6
Dependent Claim
28 words
A vehicle according to claim 3, characterized in that the shaft of the internal-combustion engine and the shaft of the first generator are positioned parallel to each other.
Claim 7
Dependent Claim
29 words
A vehicle according to claim 3, characterized in that the first generator is arranged coaxially to the internal-combustion engine and the second generator is located alongside the internal-combustion engine.
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) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |