Patent US3780986A successfully refreshed from Google Patents.
US3780986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball valve
Assignee: Individual
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Filing: 1972-04-12
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Granted: 1973-12-25
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Expires: 1992-04-12
Abstract
Abstract A ball valve includes a main body having an axially extending passageway within which a valve body is positioned. Within the passageway, the opposite sides of the valve body are fitted against valve seat members. One valve seat member is secured by a valve seat retainer which is adjustably secured within the passageway by a corrugated washer and an adjusting member in threaded engagement with the main body, the other valve seat is held by a projection on the main body which extends radially inwardly into the passageway. Extending annularly about the radially outer surfaces of each valve seat member is an annular groove which accommodates any heat expansion of the valve seat members. At each end of the passageway, an end member is clamped to the main body, one end member forms an inlet port and the other forms an outlet port. The ball valve can be easily disassembled for inspection purposes and its simple arrangement makes it easy to manipulate and maintain.
Inventors
- 👤 K Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/14; F16K5/20; F16K5/201; F16K5/06; F16K5/0663; F16K5/0673; F16K5/0678
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
358 words
A ball valve comprising a main body forming an axially extending passageway therethrough having a first end and a second end, a ball valve body positioned within said passageway intermediate the ends thereof with the first end having a diameter sufficient to pass said valve body into position in said passageway and said second end being smaller than said first end so that said valve body cannot pass outwardly from said passageway through said second end, a first annular-shaped valve seat member located within the first end of said passageway and in contact with said valve body and a second annular-shaped valve seat member located within the second end of said passageway and disposed in contact with the opposite side of said valve body from said first valve seat member, an annular valve seat retainer located within the first end of said passageway and arranged to receive and hold said first valve seat member in contact with said valve body, a corrugated washer in surface contact with the opposite side of said valve seat retainer from the side in contact with said first valve seat member, an adjusting member movably secured in the first end of said main body in contact with the opposite side of said corrugated washer from the side thereof in contact with said valve seat member, a sealing ring disposed between the outer circumferential periphery of said valve seat retainer and the surface of said passageway within said main body, said main body having a holding portion at its second end projecting inwardly into the passageway on the opposite side of said second valve seat member from said valve body, said valve seat retainer having an annular groove formed in a surface therein in contact with a radially outer surface of said first valve seat member, said main body having an annular groove formed in its surface in contact with a radially outer surface of said second valve seat member and located adjacent to said holding portion, and the annular grooves formed in said valve seat retainer and said main body are arranged to accommmodate expansion of said first and second valve seat members.
Claim 2
Dependent Claim
358 words
A ball valve comprising a main body forming an axially extending passageway therethrough having a first end and a second end, a ball valve body positioned within said passageway intermediate the ends thereof with the first end having a diameter sufficient to pass said valve body into position in said passageway and said second end being smaller than said first end so that said valve body cannot pass outwardly from said passageway through said second end, a first annular-shaped valve seat member located within the first end of said passageway and in contact with said valve body and a second annular-shaped valve seat member located within the second end of said passageway and disposed in contact with the opposite side of said valve body from said first valve seat member, an annular valve seat retainer located within the first end of said passageway and arranged to receive and hold said first valve seat member in contact with said valve body, a corrugated washer in surface contact with the opposite side of said valve seat retainer from the side in contact with said first valve seat member, an adjusting member movably secured in the first end of said main body in contact with the opposite side of said corrugated washer from the side thereof in contact with said valve seat member, a sealing ring disposed between the outer circumferential periphery of said valve seat retainer and the surface of said passageway within said main body, said main body having a holding portion at its second end projecting inwardly into the passageway on the opposite side of said second valve seat member from said valve body, said valve seat retainer having an annular groove formed in a surface therein in contact with a radially outer surface of said first valve seat member, said main body having an annular groove formed in its surface in contact with a radially outer surface of said second valve seat member and located adjacent to said holding portion, and the annular grooves formed in said valve seat retainer and said main body are arranged to accommmodate expansion of said first and second valve seat members.
Claim 3
Dependent Claim
96 words
A ball valve, as set forth in claim 1, wherein said valve seat retainer forms an opening in alignment with the passageway through said main body, an annular projection formed on the radially inner surface of said valve seat retainer for supporting at least a portion of the radially inner surface of said first valve seat member, and a bushing located within the second end of the passageway in said main body adjacent tHe outlet port, said bushing disposed in supporting contact with a portion of the radially inner surface of said second valve seat member.
Claim 4
Dependent Claim
70 words
A ball valve, as set forth in claim 1, wherein said main body having aligned openings therein with the axis of the aligned openings disposed transversely of the axis of the passageway therethrough, a valve stem insertable into said main body through one of said aligned openings and securable within the main body within the other said aligned opening, and said valve stem disposed in engagement with said valve body.
Claim 5
Dependent Claim
37 words
A ball valve, as set forth in claim 3, wherein a plug is secured in the aligned opening in said main body through which said valve stem is inserted, said plug providing a closure for the opening.
Claim 6
Dependent Claim
82 words
A ball valve, as set forth in claim 3, wherein means positioned on said valve stem for securing it to said main body, said means including a stopper having an arcuately shaped recess along a portion of its periphery, and a similarly configured arcuately shaped projection on said main body and said projection being engageable within the recess in said stopper for limiting the movement of said valve stem and valve body between the opened and closed positions of said ball valve.
Claim 7
Dependent Claim
60 words
A ball valve, as set forth in claim 5, wherein said means on said valve stem includes a corrugated washer in contact with said main body, a washer superposed on said corrugated washer, a sliding ring superposed on said washer, said stopper superposed on said sliding ring, and a nut threaded on said valve stem and seated against said stopper.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |