Patent US2218854A successfully refreshed from Google Patents.
Patent US3747616A successfully refreshed from Google Patents.
US3747616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earthquake sensitive shut-off valve
Assignee: SAFE-T-QUAKE Corp
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Filing: 1971-11-15
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Granted: 1973-07-24
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Expires: 1991-11-15
Abstract
Abstract A normally open shut-off valve unit that responds to vibrations of disaster magnitude, to close a fluid line, and which involves a single moving part in the form of a valve element that is manually set for normal open operation, the valve unit involving a leveled valve body with a lateral housing, an inclined bar having a saddle formed of related inclined planes upon which the valve element is normally mounted with point contact out of the flow passage through the unit, there being a seat in said flow passage to receive and support the valve element when it is shaken and thereby demounted from the saddle to close the said flow passage. Retractile remounting means operates through the seat to reposition the valve element on the saddle.
Inventors
- 👤 H Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:38
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/14; F16K17/00; F16K17/36; F16K17/366; Y; Y10; Y10T; Y10T137/00; Y10T137/0753
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
180 words
A normalLy open shut-off valve sensitive to close in response to horizontal accelerations and/or decelerations and including; a body having a flow passage therethrough and extending through an upwardly faced valve seat disposed on a vertical axis, a housing adjacent to the body and having a closed chamber opening into the flow passage above said valve seat, a spherical valve element, an inclined bar supported in the chamber of the housing and having two complementary portions and one of which extends upwardly and outwardly from a horizontal plane normal to the first mentioned vertical axis and the other of which terminates at the innermost end of the bar and extends upwardly and inwardly at the same angle as the said one portion to cooperatively engage with and to form an upwardly faced saddle to support the valve element said valve element being normally mounted upon the saddle formed on the inclined bar and displaceable therefrom and moveable freely from the housing chamber and through the flow passage to have annular interengagement upon said valve seat to close the flow passage.
Claim 2
Dependent Claim
180 words
A normalLy open shut-off valve sensitive to close in response to horizontal accelerations and/or decelerations and including; a body having a flow passage therethrough and extending through an upwardly faced valve seat disposed on a vertical axis, a housing adjacent to the body and having a closed chamber opening into the flow passage above said valve seat, a spherical valve element, an inclined bar supported in the chamber of the housing and having two complementary portions and one of which extends upwardly and outwardly from a horizontal plane normal to the first mentioned vertical axis and the other of which terminates at the innermost end of the bar and extends upwardly and inwardly at the same angle as the said one portion to cooperatively engage with and to form an upwardly faced saddle to support the valve element said valve element being normally mounted upon the saddle formed on the inclined bar and displaceable therefrom and moveable freely from the housing chamber and through the flow passage to have annular interengagement upon said valve seat to close the flow passage.
Claim 3
Dependent Claim
61 words
The shut-off valve as set forth in claim 1 wherein the inclined bar is V-shaped in transverse cross section having opposite planar sides disposed at the same angle to a horizontal plane normal to the first mentioned vertical axis as the angle of said upward inclination of the two complementary portions thereof, so as to tangentially engage the spherical valve element.
Claim 4
Dependent Claim
45 words
The shut-off valve as set forth in claim 1 wherein a plug is removeable from an opening through the body below the valve seat for access of an instrument projected therethrough and through the valve seat to lift and thereby remount the spherical valve element.
Claim 5
Dependent Claim
31 words
The shut-off valve as set forth in claim 1 wherein the chamber is closed by a cap for access therein, and wherein the inclined bar is removeably mounted in the housing.
Claim 6
Dependent Claim
35 words
The shut-off valve as set forth in claim 1 wherein the housing chamber is closed by a cap for access to a receptacle therein, and wherein the inclined bar is removeably received in said receptacle.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |