US3973471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motors
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1975-07-14
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Granted: 1976-08-10
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Expires: 1995-07-14
Abstract
Abstract Hydraulic and pneumatic motors having expansion chambers arranged between two supporting means, at least one of which is rotatable, said chambers formed at least in part of material that is elastically deformable by the pressure medium used, are provided. The invention also provides a control system for introducing the pressure medium into the chambers sequentially and expelling it sequentially after each chamber has attained maximum volume.
Inventors
- 👤 Georg Hirmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:39
CPC Classifications
F; F03; F03C; F03C7/00; F01; F01B; F01B19/00; F01B19/04; F03C1/00; F03C1/02; F03C1/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
179 words
A motor actuated by a fluid pressure medium comprising a rotatable output drive shaft, first and second support means having axes relatively inclined at an intersecting angle and movable relative to each other, said first support means having a conical surface facing the second support means, said first support means being connected to the output shaft to cause rotation thereof upon movement of said first support means, a multi-lobed, rosette shaped structure divided into a plurality of independent, freely distortable pressure chambers having freely distortable outer peripheral areas arranged between the first and second support means, means for connecting each lobe of the rosette structure only to said second support means over a relatively small area compared to the total surface area of the second support means, and pressure control means for admitting said fluid pressure medium into each pressure chamber sequentially to cause movement of the first support means and rotation of the output shaft and permitting said fluid pressure medium to be expelled from each pressure chamber after the maximum volume of each chamber has been attained.
Claim 2
Dependent Claim
179 words
A motor actuated by a fluid pressure medium comprising a rotatable output drive shaft, first and second support means having axes relatively inclined at an intersecting angle and movable relative to each other, said first support means having a conical surface facing the second support means, said first support means being connected to the output shaft to cause rotation thereof upon movement of said first support means, a multi-lobed, rosette shaped structure divided into a plurality of independent, freely distortable pressure chambers having freely distortable outer peripheral areas arranged between the first and second support means, means for connecting each lobe of the rosette structure only to said second support means over a relatively small area compared to the total surface area of the second support means, and pressure control means for admitting said fluid pressure medium into each pressure chamber sequentially to cause movement of the first support means and rotation of the output shaft and permitting said fluid pressure medium to be expelled from each pressure chamber after the maximum volume of each chamber has been attained.
Claim 3
Dependent Claim
59 words
The motor of claim 1, wherein both support means comprise rotating disks rotatable about their axes, said first support disk being affixed to the output shaft so that the axis of the shaft is also inclined to the axis of the second support disk and wherein said rosette structure rotates simultaneously with both support disks and the output shaft.
Claim 4
Dependent Claim
36 words
The motor of claim 1 wherein the means for connecting each lobe of the rosette-shaped structure to said second support means is a collared sleeve locking each pressure chamber in communication with said second support means.
Claim 5
Dependent Claim
51 words
The motor of claim 1, wherein said second support means is fixed and the first support means comprises a tumbling support diskconnected through a pivot means to the output shaft whereby tumbling movement of the disk in response to sequential inflation of the pressure chambers causes rotation of the output shaft.
Claim 6
Dependent Claim
17 words
The motor of claim 1, wherein said multi-lobed, rosette-shaped structure is made of flexible plastic sheet material.
Claim 7
Dependent Claim
15 words
The motor of claim 1, wherein said pressure control means includes a rotary slide valve.
Claim 8
Dependent Claim
36 words
The motor of claim 1, further comprising means for regulating the angle of inclination of the axis of the second support means relative to the axis of the first support means connected to said output shaft.
Claim 9
Dependent Claim
17 words
The motor of claim 7, wherein said means for regulating the angle of inclination is a spring.
References Cited (Backward Citations)
US1347512A
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US2346236A
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US2392279A
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US3014348A
Cited
US3232318A
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US3523488A
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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) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |