US4209678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure switch actuator
Assignee: Haigh Engineering Co Ltd
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Filing: 1977-04-12
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Granted: 1980-06-24
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Expires: 1997-04-12
Abstract
Abstract A switch, particularly for use in controlling the comminuter motor of a waste disposal unit, which provides pressure pulses, for use in the electrical control circuit of the motor, by compressing one or more resilient members in sequence when operated.
Inventors
- 👤 Dennis M. Hussey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:17
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A pressure switch actuator comprising at least one resilient compressible member, said at least one compressible member having a protectable cover located thereabout, a tube communicating with each said member and being connectable to a pressure switch, and a rotary member rotatable from a first position in which it does not affect said compressible member to a second position in which it causes compression of said compressible member, said rotary member having a cam surface which contacts said protectable cover to effect compression of said compressible member in the second position.
Claim 2
Dependent Claim
91 words
A pressure switch actuator comprising at least one resilient compressible member, said at least one compressible member having a protectable cover located thereabout, a tube communicating with each said member and being connectable to a pressure switch, and a rotary member rotatable from a first position in which it does not affect said compressible member to a second position in which it causes compression of said compressible member, said rotary member having a cam surface which contacts said protectable cover to effect compression of said compressible member in the second position.
Claim 3
Dependent Claim
19 words
A switch as claimed in claim 1, in which a pressure actuated electrical switch is connected to said tube.
Claim 4
Dependent Claim
30 words
A switch actuator as defined in claim 1 wherein two compressible members are provided and wherein the tubes in communication with each compressible member are connectable to different pressure switches.
Claim 5
Dependent Claim
33 words
A switch actuator as defined in claim 3 wherein one of said tubes is connectable to a forward pressure switch and the other of said tubes is connectable to a reverse pressure switch.
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) | 1983-06-24 | 1983-12-24 | 1984-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-24 | 1987-12-24 | 1988-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-24 | 1991-12-24 | 1992-06-24 | $7700.00 | Window Closed / Lapsed |