US3614276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary vane pump
Assignee: Industrial Electronic Hardware Corp
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Filing: 1970-01-15
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Granted: 1971-10-19
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Expires: 1990-01-15
Abstract
Abstract A rotary sliding vane machine in which the vane springs are positioned in chambers under the vane guide slots which are eccentrically arranged with respect to the guide slots. The springs may be either curved strip springs or cylindrical helical springs.
Inventors
- 👤 Hans Erdmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:57
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0827; F01C21/0845
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
90 words
A sliding vane rotary machine having vanes arranged in guide slots of a rotor and pressed outwardly against a cam plate by springs wherein each of the springs are positioned in a chamber arranged under and eccentrically with respect to the guide slot, one end of each of the springs being retained in a groove in the bottom surface in the vane stem while the other end is supported at a point in the rotor directly in line with the vane stem. in the rotor directly in the vane stem.
Claim 2
Dependent Claim
90 words
A sliding vane rotary machine having vanes arranged in guide slots of a rotor and pressed outwardly against a cam plate by springs wherein each of the springs are positioned in a chamber arranged under and eccentrically with respect to the guide slot, one end of each of the springs being retained in a groove in the bottom surface in the vane stem while the other end is supported at a point in the rotor directly in line with the vane stem. in the rotor directly in the vane stem.
Claim 3
Dependent Claim
18 words
The sliding vane rotary machine of claim 1 wherein the spring is a strip spring having a C-shape.
Claim 4
Dependent Claim
17 words
The sliding vane rotary machine of claim 2 wherein the strip spring has holes in its surface.
Claim 5
Dependent Claim
44 words
The sliding vane rotary machine of claim 1 wherein the spring is a cylindrical helical spring having one end supported in a groove in the bottom surface of the vane stem and the other end supported at a point directly under the vane stem.
Claim 6
Dependent Claim
66 words
The sliding vane rotary machine of claim 4 wherein the spring is two cylindrical helical springs having abutting ends which are connected and jointly supported by a pin resting in a central hole under the vane stem and the outer ends of the spring are bent toward each other and connected by a tube which rests in the groove in the bottom of the vane stem.
References Cited (Backward Citations)
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Cited
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US616766A
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US886110A
Cited
US2062576A
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Cited
US3118595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |