US3572162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plumbing handle knob combination
Assignee: Shared Technologies Fairchild Telecom Inc
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Filing: 1969-04-01
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Granted: 1971-03-23
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Expires: 1989-04-01
Abstract
Abstract A VALVE CONTROL KNOB IS PROVIDED WITH AN ADAPTER WHICH HAS AN INNER SLEEVE PORTION THAT MESHES WITH A SPLINED VALVE STEM. THE INNER SLEEVE PORTION HAS AN ENLARGED PERIPHERAL WALL SECTION CONNECTED THERE TO AND SPACED RADIALLY OUTWARD THEREFROM WHICH MATES WITH THE NECK OF THE CONTROL KNOB. A SPRING IS CONNECTED TO AND EXTENDS THROUGH THE PERIPHERAL WALL PORTION TO ENGAGE THE KNOB SLEEVE TO RETAIN SAME ON THE ADAPTER. AN APERTURE IS PROVIDED IN THE KNOB SLEEVE FOR ACCESS TO THE SPRING FOR REMOVAL OF THE KNOB FROM THE ADAPTER.
Inventors
- 👤 William F Gresham
- 👤 George R Stucka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:11
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/60; Y; Y10; Y10T; Y10T403/00; Y10T403/60; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/2084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |