US3897933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum valve
Assignee: Individual
•
Filing: 1973-12-20
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Granted: 1975-08-05
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Expires: 1993-12-20
Abstract
Abstract The present invention relates to a vacuum valve in which an elongate body having a longitudinal bore is provided with a transverse rotary plug with a bore extending therethrough adapted to align with the bore in the body. The plug is provided with seals at each end and has gear teeth formed in a portion of its circumference to mesh with a gear slide mounted for sliding movement on the exterior of the body. The slide is thumb operated and when moved longitudinally of the body, rotates the plug to open and close the port in the body.
Inventors
- 👤 Fred A Christenot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/53; F16K31/54
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
186 words
A thumb actuated vacuum valve comprising an elongate body having a generally rectangular cross section and four side faces, a longitudinal bore extending completely through said body, a transverse bore extending through said body opening through one of said side faces and extending to and opening through an opposite parallel side face intersecting said longitudinal bore, a pair of parallel outwardly opening grooves formed in opposed side faces adjacent one of said side faces throughwhich said transverse bore opens, a rotary valve plug mounted in said transverse bore for rotation therein with said plug having the bore extending therethrough adapted to be aligned with the longitudinal bore in said body upon rotation of said plug, gear teeth around a portion of the diameter of said plug adjacent one end of said plug, a hand actuated slide on said body, a pair of bars on said slide engaging in said groove for mounting said slide for sliding movement along said body, and gear teeth on one of said bars meshing with the gear teeth on said plug for rotating said plug upon sliding movement of said slide.
Claim 2
Dependent Claim
186 words
A thumb actuated vacuum valve comprising an elongate body having a generally rectangular cross section and four side faces, a longitudinal bore extending completely through said body, a transverse bore extending through said body opening through one of said side faces and extending to and opening through an opposite parallel side face intersecting said longitudinal bore, a pair of parallel outwardly opening grooves formed in opposed side faces adjacent one of said side faces throughwhich said transverse bore opens, a rotary valve plug mounted in said transverse bore for rotation therein with said plug having the bore extending therethrough adapted to be aligned with the longitudinal bore in said body upon rotation of said plug, gear teeth around a portion of the diameter of said plug adjacent one end of said plug, a hand actuated slide on said body, a pair of bars on said slide engaging in said groove for mounting said slide for sliding movement along said body, and gear teeth on one of said bars meshing with the gear teeth on said plug for rotating said plug upon sliding movement of said slide.
Claim 3
Dependent Claim
24 words
A device as claimed in claim 1 including seals at each end of said valve plug for sealing said valve plug in said body.
Claim 4
Dependent Claim
16 words
A device as claimed in claim 1 incluDing detachable means securing said plug in said body.
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |