US4193579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable handle for control devices
Assignee: Parker and Harper Manufacturing Co Inc
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Filing: 1977-11-08
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Granted: 1980-03-18
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Expires: 1997-11-08
Abstract
Abstract A combined stem assembly and removable handle for a rotary control device such as a valve. The handle interlocks with an indexing member and is secured by a hollow nut that screws onto the stem over and enveloping the nut holding the stem assembly together.
Inventors
- 👤 Roger G. Massey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:55
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/60; F16K31/602
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
A valve assembly with a detachable handle comprising: (a) A valve body; (b) a valve stem that extends inside said valve body and is secured in place by a first nut screwed onto said stem at the exterior of said valve body; (c) an indexing member positioned over said stem under said nut, said indexing member having a depending tab mating with indexing stops in said valve body; (d) a detachable handle mating with the periphery of said indexing member in a single position relative to said indexing member by means of an aperture and a slot extending from said aperture to accomodate said depending tab; and, (e) a second nut with skirts extending past the periphery of said first nut so as to secure said handle in place while enveloping said first nut, whereby said first nut secures said stem and said indexing member in place independently of said handle and said second nut permits said handle to be secured or detached independently of said indexing member.
Claim 2
Dependent Claim
168 words
A valve assembly with a detachable handle comprising: (a) A valve body; (b) a valve stem that extends inside said valve body and is secured in place by a first nut screwed onto said stem at the exterior of said valve body; (c) an indexing member positioned over said stem under said nut, said indexing member having a depending tab mating with indexing stops in said valve body; (d) a detachable handle mating with the periphery of said indexing member in a single position relative to said indexing member by means of an aperture and a slot extending from said aperture to accomodate said depending tab; and, (e) a second nut with skirts extending past the periphery of said first nut so as to secure said handle in place while enveloping said first nut, whereby said first nut secures said stem and said indexing member in place independently of said handle and said second nut permits said handle to be secured or detached independently of said indexing member.
Claim 3
Dependent Claim
31 words
A valve assembly according to claim 1 wherein said valve assembly comprises a ball valve and said indexing stops are two stops defining substantially 90 degree rotation of said valve stem.
Claim 4
Dependent Claim
31 words
A valve assembly according to claim 2 further comprising a washer positioned under said indexing member and having a periphery extending beyond said indexing member so as to backstop said handle.
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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) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |