US3613518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm actuator
Assignee: AUTOROL CORP
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Filing: 1969-12-31
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Granted: 1971-10-19
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Expires: 1989-12-31
Abstract
Abstract A diaphragm actuator includes a rigid lever that has an internal arm embedded in a soft resilient rubber membrane to reciprocate pivotally between two chambers in a housing and an external arm which projects out of the housing to reciprocate pivotally externally of the housing. Two hollow members clamped together against a seal formed about the periphery of the membrane make up the housing. The seal also serves as a fulcrum where the lever projects out of the housing. Either end of the lever may serve as a force end or a work end.
Inventors
- 👤 David G Prosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:35
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
219 words
A pressure differential diaphragm actuator comprising the combination of housing having a hollow interior and an actuator opening through one wall communicating with said hollow interior; a lever actuator mounted in said actuator opening, and having a first lever arm inside said housing, second lever arm projecting outside said housing, and a fulcrum portion located in said actuator opening; a pivotal mounting for said fulcrum portion of said actuator being formed in said opening by a resiliently flexible and deformable material surrounding said lever actuator and forming a seal between said lever actuator and said housing wall at said opening; and a membrane fastened to said first lever arm of said lever, having its periphery fastened to said interior of said housing to divide said interior of said housing into two chambers on opposite sides of said membrane, and being adapted to allow said lever actuator to pivot about said pivotal mounting in said housing wall by deforming said resiliently flexible and deformable materials; said first lever arm of said lever being in said membrane; said membrane being made of said resiliently flexible and deformable material, said membrane and said pivoted mounting for said lever actuator being integrally formed, and said membrane having an expandible pleat formed between said first lever arm of said lever actuator at its periphery.
Claim 2
Dependent Claim
219 words
A pressure differential diaphragm actuator comprising the combination of housing having a hollow interior and an actuator opening through one wall communicating with said hollow interior; a lever actuator mounted in said actuator opening, and having a first lever arm inside said housing, second lever arm projecting outside said housing, and a fulcrum portion located in said actuator opening; a pivotal mounting for said fulcrum portion of said actuator being formed in said opening by a resiliently flexible and deformable material surrounding said lever actuator and forming a seal between said lever actuator and said housing wall at said opening; and a membrane fastened to said first lever arm of said lever, having its periphery fastened to said interior of said housing to divide said interior of said housing into two chambers on opposite sides of said membrane, and being adapted to allow said lever actuator to pivot about said pivotal mounting in said housing wall by deforming said resiliently flexible and deformable materials; said first lever arm of said lever being in said membrane; said membrane being made of said resiliently flexible and deformable material, said membrane and said pivoted mounting for said lever actuator being integrally formed, and said membrane having an expandible pleat formed between said first lever arm of said lever actuator at its periphery.
Claim 3
Dependent Claim
144 words
A pressure differential diaphragm actuator comprising the combination of a housing having a hollow interior and including two cup-shaped housing members with mating open ends assembled together; a sealing member of a resIliently flexible and deformable material clamped between said mating open ends of said housing members to form a seal therewith; a membrane bisecting said hollow interior of said housing to form separate chambers on opposite sides of it and being sealingly fastened about its periphery to interior surfaces of said hollow interior of said housing; a lever actuator mounted for pivotal movement through said sealing ring having a first lever arm within said hollow interior of said housing fastened to said membrane and a second lever arm projecting outside of said housing; and said membrane being made of a resiliently flexible and deformable material and having a pleated portion adjacent its periphery.
Claim 4
Dependent Claim
144 words
A pressure differential diaphragm actuator comprising the combination of a housing having a hollow interior and including two cup-shaped housing members with mating open ends assembled together; a sealing member of a resIliently flexible and deformable material clamped between said mating open ends of said housing members to form a seal therewith; a membrane bisecting said hollow interior of said housing to form separate chambers on opposite sides of it and being sealingly fastened about its periphery to interior surfaces of said hollow interior of said housing; a lever actuator mounted for pivotal movement through said sealing ring having a first lever arm within said hollow interior of said housing fastened to said membrane and a second lever arm projecting outside of said housing; and said membrane being made of a resiliently flexible and deformable material and having a pleated portion adjacent its periphery.
Claim 5
Dependent Claim
43 words
A pressure differential diaphragm actuator as set forth in claim 2 wherein said membrane and said sealing member are a single integral formed unit; and said first lever arm of said lever actuator is embedded in said membrane and through said sealing member.
References Cited (Backward Citations)
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Cited
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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) | 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 |