US3776505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Kobe Steel Ltd
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Filing: 1972-10-02
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Granted: 1973-12-04
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Expires: 1992-10-02
Abstract
Abstract A valve comprising a valve plate for closing a through fluid passageway which is first retracted from the valve seat and then rotated in order to open, a valve rod having an eccentric portion rotatably supporting the valve plate, a retraction guide pin for the valve plate engaging with the body of the valve to guide the valve plate during its retraction upon rotating the valve rod through a first portion, and a rotation guide pin to lock the valve plate with the valve rod only during a second portion of rotation of the valve rod for movement therewith.
Inventors
- 👤 S Nakanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
187 words
In a valve including a valve body forming a fluid passageway therethrough, an annular valve seat coaxial with the axis of said fluid paSsageway, and a valve rod means rotatably disposed on the valve body perpendicular to the axis of said valve seat and adapted to be operated from outside said valve body, the improvement characterized by: said valve rod having an integral eccentric portion; a valve plate rotatably supported by said eccentric portion and engagable with said valve seat; a first and a second guide pin disposed in said valve plate; said valve body having a first guide groove to guide said first guide pin to retract said valve plate during a first portion of rotation of said valve rod; said valve rod means forming recess means adapted to engage with said second guide pin; means to engage said recess means with said second guide pin only during a second portion of rotation of said valve rod, whereby said valve plate first is retracted from said valve seat and then is rotated with said valve rod by rotation of the valve rod to open the valve.
Claim 2
Dependent Claim
187 words
In a valve including a valve body forming a fluid passageway therethrough, an annular valve seat coaxial with the axis of said fluid paSsageway, and a valve rod means rotatably disposed on the valve body perpendicular to the axis of said valve seat and adapted to be operated from outside said valve body, the improvement characterized by: said valve rod having an integral eccentric portion; a valve plate rotatably supported by said eccentric portion and engagable with said valve seat; a first and a second guide pin disposed in said valve plate; said valve body having a first guide groove to guide said first guide pin to retract said valve plate during a first portion of rotation of said valve rod; said valve rod means forming recess means adapted to engage with said second guide pin; means to engage said recess means with said second guide pin only during a second portion of rotation of said valve rod, whereby said valve plate first is retracted from said valve seat and then is rotated with said valve rod by rotation of the valve rod to open the valve.
Claim 3
Dependent Claim
32 words
A valve according to claim 1, further comprising: mounting block means mounting said valve plate to said valve rod, said first and second guide pins being disposed in said mounting block means.
Claim 4
Dependent Claim
116 words
A valve according to claim 1, further comprising: said valve rod means including a moving ring secured to said valve rod and having a through hole being said recess means; and said means for engaging said recess means with said second guide pin being an engaging pin slidably disposed in said through hole and engageable with said second guide pin; said valve body having a second guide groove engageable with said engaging pin, whereby during said second portion of rotation of the valve rod, said engaging pin engages said second guide groove and allows said second guide pin to slide into said through hole to lock said valve plate to said valve rod to rotate therewith.
Claim 5
Dependent Claim
70 words
A valve according to claim 1, wherein the relative positions in the valve closed position of said valve rod, said eccentric portion, said valve plate and said valve seat are determined such that a line through the centers of said valve rod and said eccentric portion forms an angle to the axis of said valve seat, whereby operation of said valve rod urges the valve plate toward the valve seat.
Claim 6
Dependent Claim
70 words
A valve according to claim 2, wherein the relative positions in the valve closed position of said valve rod, said eccentric portion, said valve plate and said valve seat are determined such that a line through the centers of said valve rod and said eccentric portion froms an angle to the axis of said valve seat, whereby operation of said valve rod urges the valve plate toward the valve seat.
Claim 7
Dependent Claim
70 words
A valve according to claim 3, wherein the relative positions in the valve closed position of said valve rod, said eccentric portion, said valve plate and said valve seat are determined such that a line through the centers of said valve rod and said eccentric portion forms an angle to the axis of said valve seat, whereby operation of said valve rod urges the valve plate toward the valve seat.
References Cited (Backward Citations)
US2919885A
Cited
US3033513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |