US4659064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fixing the position of a valve element shaft in a bore
Assignee: Keystone International Holdings Corp
•
Filing: 1986-08-01
•
Granted: 1987-04-21
•
Expires: 2006-08-01
Abstract
Abstract An apparatus for fixing the longitudinal position of a shaft, e.g., a valve stem, within the bore of a body, e.g., a valve body comprising a shaft having a plurality of peripherally extending, generally equally spaced, discrete grooves, the grooved portion of the shaft being received in the bore, a stop being provided internally of the bore, a washer having an inwardly tapered abutment surface engaging the stop, a split ring received on the shaft and engaging the inwardly tapered abutment surface, the apparatus further including a gland assembly including a second washer for engagement with the first washer, the gland assembly urging the second washer against the first washer, the split ring being forced into engagement with the abutment surface and into a groove adjacent the abutment surface. The apparatus is particularly useful in fixing the position of the stem in a butterfly valve to prevent a longitudinal force acting on the valve stem from forcing the disk out of its centered disposition with respect to the valve seat.
Inventors
- 👤 William B. Scobie
- 👤 Dick R. Dodds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:58
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/02; F16K41/04; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; F16K1/2268; F16B; F16B2200/00; F16B2200/40; F16B2200/406; Y; Y10; Y10T; Y10T403/00; Y10T403/60
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
152 words
Apparatus for fixing the longitudinal position of an elongate shaft in a bore in a body comprising: means providing a stop internally of said bore; abutment means disposed in said bore and providing at least one inwardly tapered abutment surface, said abutment means being in engagement with said stop means; a shaft disposed in said bore, said shaft having a plurality of peripherally extending, generally equally spaced, discrete grooves, said shaft being positioned in said bore such that said tapered surface is in generally surrounding relationship to at least one of said grooves; split ring means received on said shaft; and means received in said bore to urge and maintain said split ring in engagement with said tapered surface and said at least one groove whereby said split ring is wedged between said tapered surface and said at least one groove thereby restraining relative axial movement between said shaft and said body.
Claim 2
Dependent Claim
152 words
Apparatus for fixing the longitudinal position of an elongate shaft in a bore in a body comprising: means providing a stop internally of said bore; abutment means disposed in said bore and providing at least one inwardly tapered abutment surface, said abutment means being in engagement with said stop means; a shaft disposed in said bore, said shaft having a plurality of peripherally extending, generally equally spaced, discrete grooves, said shaft being positioned in said bore such that said tapered surface is in generally surrounding relationship to at least one of said grooves; split ring means received on said shaft; and means received in said bore to urge and maintain said split ring in engagement with said tapered surface and said at least one groove whereby said split ring is wedged between said tapered surface and said at least one groove thereby restraining relative axial movement between said shaft and said body.
Claim 3
Dependent Claim
18 words
The apparatus of claim 1 wherein said stop comprises a shoulder formed on said body in said bore.
Claim 4
Dependent Claim
14 words
The apparatus of claim 2 wherein said shoulder comprises said inwardly tapered abutment surface.
Claim 5
Dependent Claim
47 words
Apparatus according to claim 1 wherein said abutment means comprises a first washer member received on said shaft, said first washer member having a central aperture, said at least one inwardly tapered abutment surface being formed about the periphery of said aperture in said first washer member.
Claim 6
Dependent Claim
53 words
The apparatus of claim 4 wherein said means to urge such split ring into engagement with said tapered surface comprises a second washer member received on said shaft, said second washer member engaging said first washer member, and wherein there are means to urge said second washer member against said first washer member.
Claim 7
Dependent Claim
67 words
The apparatus of claim 5 wherein said second washer member has a central aperture and there is a second inwardly tapered abutment surface formed around the periphery of said aperture in said second washer member, said first and second washer members being disposed such that said first and second tapered abutment surfaces form an annular, generally radially outwardly extending recess in generally surrounding relationship to said grooves.
Claim 8
Dependent Claim
17 words
The apparatus of claim 1 wherein said grooves are generally V-shaped when viewed in transverse cross section.
Claim 9
Dependent Claim
192 words
A valve comprising: a valve body having a flow passage and at least one bore; a valve stem disposed in said bore, said stem having a plurality of peripherally extending, generally equally spaced, discrete grooves; a valve closure element disposed in said flow passage to control flow of fluid through said bore, said valve element being secured to said stem; means providing a stop internally of said bore; abutment means disposed in said bore and providing at least one inwardly tapered abutment surface, said abutment means being in engagement with said stop means, said valve stem being positioned in said bore such that said tapered surface is in generally surrounding relationship to at least one of said grooves; split ring means received on said valve stem; and means received in said bore to urge and maintain said split ring in engagement with said tapered surface and said at least one groove whereby said split ring is wedged between said tapered surface and said at least one groove thereby restraining relative axial movement between said valve stem and said valve body and maintaining the position of said valve element in said valve body.
Claim 10
Dependent Claim
192 words
A valve comprising: a valve body having a flow passage and at least one bore; a valve stem disposed in said bore, said stem having a plurality of peripherally extending, generally equally spaced, discrete grooves; a valve closure element disposed in said flow passage to control flow of fluid through said bore, said valve element being secured to said stem; means providing a stop internally of said bore; abutment means disposed in said bore and providing at least one inwardly tapered abutment surface, said abutment means being in engagement with said stop means, said valve stem being positioned in said bore such that said tapered surface is in generally surrounding relationship to at least one of said grooves; split ring means received on said valve stem; and means received in said bore to urge and maintain said split ring in engagement with said tapered surface and said at least one groove whereby said split ring is wedged between said tapered surface and said at least one groove thereby restraining relative axial movement between said valve stem and said valve body and maintaining the position of said valve element in said valve body.
Claim 11
Dependent Claim
18 words
The valve of claim 8 wherein said stop comprises a shoulder formed on said body in said bore.
Claim 12
Dependent Claim
47 words
The valve of claim 9 wherein said abutment means comprises a first washer member received on said shaft, said first washer member having a central aperture, said at least one inwardly tapered abutment surface being formed about the periphery of said aperture in said first washer member.
Claim 13
Dependent Claim
65 words
The valve of claim 10 wherein said means to urge said split ring into engagement with said tapered surface comprises a second washer member received on said shaft, said second washer member engaging said first washer member, and wherein said means to urge said split ring into engagement with said tapered surface comprises means to urge said second washer member against said first washer member.
Claim 14
Dependent Claim
65 words
The valve of claim 11 wherein said second washer member has a central aperture and there is a second inwardly tapered abutment surface formed around the periphery of said aperture in said second washer member, said first and washer members being disposed such that said first and second tapered abutment surfaces form a generally radially outwardly extending recess in generally surrounding relationship to said groove.
Claim 15
Dependent Claim
17 words
The valve of claim 8 wherein said grooves are generally V-shaped when viewed in transverse cross section.
Claim 16
Dependent Claim
13 words
The valve of claim 8 wherein said valve closure element comprises a disk.
References Cited (Backward Citations)
GB689630A
Cited
US3149524A
Cited
US3425439A
Cited
US3588154A
Cited
US3602340A
Cited
US3666234A
Cited
DE2710104A1
Cited
US4225263A
Cited
US4420140A
Cited
US4270730A
Cited
US4411438A
Cited
US4457490A
Cited
US4457490B1
Cited
US4541612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-04-20 | 1990-10-20 | 1991-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-20 | 1994-10-20 | 1995-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-20 | 1998-10-20 | 1999-04-21 | $7700.00 | Window Closed / Lapsed |