US3958419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive engine for motor car accessory units
Assignee: Individual
•
Filing: 1973-11-26
•
Granted: 1976-05-25
•
Expires: 1993-11-26
Abstract
Abstract A driving device for accessory units in motor cars, e.g. an air conditioning appliance, which comprises an expansion engine which is located in the induction pipe of the internal combustion engine. The expansion engine is powered by flow of air in the induction pipe and the expansion engine serves as a throttling device for the induction pipe.
Inventors
- 👤 Nikolaus Laing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:27
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00421; B60H1/00435; B60H1/00442; F; F02; F02B; F02B67/00; F02B67/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
An auxiliary driving device for driving units auxiliary to an internal combustion engine having an induction duct, comprising an expansion engine located in the induction duct of said internal combustion engine and driven by air passing through said induction duct whereby said expansion engine acts as a throttling device in said induction duct, and at least one bypass duct having a throttling device therein which duct bypasses said expansion engine whereby air may enter into the internal combustion engine when said expansion engine is not operating.
Claim 2
Dependent Claim
86 words
An auxiliary driving device for driving units auxiliary to an internal combustion engine having an induction duct, comprising an expansion engine located in the induction duct of said internal combustion engine and driven by air passing through said induction duct whereby said expansion engine acts as a throttling device in said induction duct, and at least one bypass duct having a throttling device therein which duct bypasses said expansion engine whereby air may enter into the internal combustion engine when said expansion engine is not operating.
Claim 3
Dependent Claim
16 words
An auxiliary driving device according to claim 1 wherein said expansion engine comprises an air turbine.
Claim 4
Dependent Claim
33 words
An auxiliary driving device according to claim 1 wherein said expansion engine comprises a sliding vane-type displacement engine having a casing and a rotor eccentrically mounted in said casing and carrying said vanes.
Claim 5
Dependent Claim
62 words
An auxiliary driving device according to claim 3 wherein said expansion engine has a plurality of expansion stages of different expansion ratios and swept volumes each having a rotor therein and where said stages are adapted to be transversed by air passing through said duct, and said device has in addition control means for controlling flow of air to each said stage.
Claim 6
Dependent Claim
29 words
An auxiliary driving device according to claim 4 wherein said control means successively connects stages of diminishing expansion ratios with induction air in response to an accelerator pedal position.
Claim 7
Dependent Claim
22 words
An auxiliary driving device according to claim 4 wherein the rotors in the stages are all concentric with a common drive shaft.
Claim 8
Dependent Claim
41 words
An auxiliary driving device according to claim 6 having in addition an overrunning clutch associated with each rotor for selectively connecting a rotor to said common drive shaft whereby only the fastest rotating rotor will be drivingly connected to said shaft.
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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) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |