Patent US4519580A successfully refreshed from Google Patents.
US4519580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safe high pressure instrument valve
Assignee: AIR DRY Corp 19338 LONDELIUS STREET NORTHRIDGE CA 91324 A CORP OF
•
Filing: 1984-05-15
•
Granted: 1985-05-28
•
Expires: 2004-05-15
Abstract
Abstract A safe high pressure instrument valve comprising a body, a bonnet and stem wherein the stem cannot be inadvertently removed from the bonnet and the bonnet cannot be inadvertently removed from the body. An expanded portion of the stem is removably captured in the bonnet to ensure that the stem remains in the bonnet during operation. A locking means comprising a lock nonrotatably attached to the bonnet, a locking element nonrotatably attached to the body and a means for releasable engaging the lock to the locking element ensures that the bonnet will not be inadvertently removed from the body during operation.
Inventors
- 👤 Francis Leighton
- 👤 Fred W. Trebes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:45
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K11/00; F16K11/02; F16K11/04; F16K27/00; F16K27/08; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6089; Y10T137/6092
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
A valve comprising: a body having an inlet, an outlet, and a passage between said inlet and said outlet; a bonnet threaded onto said body; a stem rotatable within said bonnet such that said stem is capable of blocking said passage; an integral locking means between said body and said bonnet wherein said locking means comprises a locking element nonrotatably attached to said body such that when said bonnet is detached from said body said locking element remains nonrotatably attached to said body; a lock nonrotatably attached to said bonnet, such that when said bonnet is detached from said body said lock remains nonrotatably attached to said bonnet; and a means for releasably engaging said lock and said locking element; said lock and said locking element each having at least one interengaging tooth.
Claim 2
Dependent Claim
133 words
A valve comprising: a body having an inlet, an outlet, and a passage between said inlet and said outlet; a bonnet threaded onto said body; a stem rotatable within said bonnet such that said stem is capable of blocking said passage; an integral locking means between said body and said bonnet wherein said locking means comprises a locking element nonrotatably attached to said body such that when said bonnet is detached from said body said locking element remains nonrotatably attached to said body; a lock nonrotatably attached to said bonnet, such that when said bonnet is detached from said body said lock remains nonrotatably attached to said bonnet; and a means for releasably engaging said lock and said locking element; said lock and said locking element each having at least one interengaging tooth.
Claim 3
Dependent Claim
31 words
The valve of claim 1 wherein said locking element has a plurality of teeth and said lock has a plurality of teeth capable of nonrotatable engagement with said locking element teeth.
Claim 4
Dependent Claim
44 words
The valve of claim 1 wherein said body comprises a projection and said means for releasably engaging said lock and said locking element includes slideably attaching said locking element to said projection and using a biasing means urging said locking element against said lock.
Claim 5
Dependent Claim
68 words
The valve of claim 1 further comprising a handle assembly, said handle assembly comprising a handle, a handle nut and a u-shaped clip, wherein said u-shaped clip is nonrotatably engaged to said stem such that the diameter of said stem is not increased, said handle is nonrotatably attached to said u-shaped clip and said handle nut is threaded onto said stem forcing said handle against said u-shaped clip.
References Cited (Backward Citations)
US1391012A
Cited
US1989083A
Cited
DE737482C
Cited
US2796881A
Cited
US2895495A
Cited
US3204925A
Cited
US4204558A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |