Patent US3438204A successfully refreshed from Google Patents.
Patent US4118007A successfully refreshed from Google Patents.
US4118007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve structure
Assignee: IMPERIAL EASTMAN ACQUISITION CORP
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Filing: 1977-03-17
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Granted: 1978-10-03
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Expires: 1997-03-17
Abstract
Abstract A valve structure having a body provided with a threaded recess for receiving a bonnet provided with a chordal flatted tool engaging portion received in an outer portion of the recess when the member is threadedly installed on the body. The outer end of the recess may be radially enlarged to receive a retainer which, when installed therein, extends between the flatted surface of the member and the body to effectively positively prevent further rotation of the member in the body threaded recess, thereby locking the member in the mounted disposition. The retainer may extend outwardly from the body surface portion and may include an outer portion engaging an outer portion of the flatted surface. The retainer may be defined by a pin having an inner end received in a hole provided in the body radially outwardly of the recess.
Inventors
- 👤 John N. Scapes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:50
CPC Classifications
F; F16; F16K; F16K27/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
193 words
In a valve having a body provided with a surface portion and a recess having a female thread and opening outwardly toward said surface portion, a bonnet having a male threaded inner end threaded to said female thread in said recess, and an outer tool engaging portion having a chordal flatted surface, and cooperating valve means carried by said body and bonnet for selectively controlling fluid flow through the valve, the improvement comprising: means defining an annular, radially enlarged outer end of said recess opening through said surface portion, at least a portion of said flatted surface of the bonnet being disposed within said outer end of the recess; and a retainer installed in said enlarged outer end of the recess with said bonnet threadedly mounted to the body, said retainer being secured to said body and extending fully between said flatted surface and the body at the periphery of said annular outer end of the recess, whereby said body effectively backs up the retainer against radial displacement by the bonnet to effectively positively prevent further rotation of the bonnet in said recess thread thereby firmly locking the bonnet in the mounted disposition.
Claim 2
Dependent Claim
193 words
In a valve having a body provided with a surface portion and a recess having a female thread and opening outwardly toward said surface portion, a bonnet having a male threaded inner end threaded to said female thread in said recess, and an outer tool engaging portion having a chordal flatted surface, and cooperating valve means carried by said body and bonnet for selectively controlling fluid flow through the valve, the improvement comprising: means defining an annular, radially enlarged outer end of said recess opening through said surface portion, at least a portion of said flatted surface of the bonnet being disposed within said outer end of the recess; and a retainer installed in said enlarged outer end of the recess with said bonnet threadedly mounted to the body, said retainer being secured to said body and extending fully between said flatted surface and the body at the periphery of said annular outer end of the recess, whereby said body effectively backs up the retainer against radial displacement by the bonnet to effectively positively prevent further rotation of the bonnet in said recess thread thereby firmly locking the bonnet in the mounted disposition.
Claim 3
Dependent Claim
22 words
The valve of claim 1 wherein said retainer includes an outer portion projecting outwardly from said enlarged outer end of the recess.
Claim 4
Dependent Claim
53 words
The valve of claim 1 wherein said bonnet tool engaging flatted surface extends outwardly from said enlarged end of the recess with the bonnet mounted to said body, and said retainer includes an outer portion projecting outwardly from said outer end of the recess and abutting said flatted surface outwardly of the recess.
Claim 5
Dependent Claim
28 words
The valve of claim 1 wherein said enlarged outer end of the recess defines a laterally outwardly extending notch, said retainer including a portion received in said notch.
Claim 6
Dependent Claim
12 words
The valve of claim 1 wherein said retainer comprises a cylindrical element.
Claim 7
Dependent Claim
29 words
The valve of claim 1 wherein said enlarged outer end of the recess defines a laterally outwardly extending semicylindrical notch, said retainer including a portion received in said notch.
Claim 8
Dependent Claim
36 words
The valve of claim 1 wherein said retainer comprises a cylindrical element and said enlarged outer end of the recess defines a semicylindrical laterally outwardly extending notch receiving an outer semicylindrical portion of said cylindrical element.
Claim 9
Dependent Claim
49 words
The valve of claim 1 wherein said tool engaging portion of the bonnet further defines a plurality of additional flatted chordal surfaces arranged seriatim about the longitudinal axis of the bonnet for selective engagement by said retainer in the mounted disposition of the bonnet relative to the valve body.
Claim 10
Dependent Claim
17 words
The valve structure of claim 8 wherein said flat chordal recesses are arranged in a polygonal array.
Claim 11
Dependent Claim
29 words
The valve structure of claim 1 wherein said outer end of the recess has a diameter substantially equal to the largest cross-sectional dimension of said outer tool engaging portion.
Claim 12
Dependent Claim
29 words
The valve structure of claim 1 wherein said retainer includes an inner end mounted in an outwardly opening hole in the body laterally outwardly of said recess female thread.
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) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |