US3650328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for automatically actuating a gas discharge valve or the like
Assignee: Ricoh Elemex Corp
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Filing: 1970-04-15
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Granted: 1972-03-21
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Expires: 1990-04-15
Abstract
Abstract Actuating means for actuating a discharge valve of a gas tank or the like is normally held in a stationary valve deactuated position by detent means. The detent means is normally held in a retaining position by a fusible metal link. When the link is fused, by an environmental temperature rise, the detent means is displaced to a releasing position at a right angle to the direction of movement of said actuating means, thereby permitting said actuating means to actuate the valve.
Inventors
- 👤 Yu Fujiki
- 👤 Hiroshi Tsubaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/40; A; A62; A62C; A62C13/00; A62C13/003; A62C37/00; A62C37/08; A62C37/10; A62C37/11; A62C37/12; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
A device for automatically actuating a gas discharge valve or the like in response to a temperature rise comprising: actuating means for actuating said valve; biasing means for normally biasing said actuating means toward a valve actuating position; detent means normally in a retaining position for retaining said actuating means in a valve deactuated position, said detent means being mounted for movement away from said retaining position to a releasing position in which said actuating means is released to move from said valve deactuated position to said valve actuating position to actuate said valve, said detent means movement being substantially at a right angle relative to the direction of movement of said actuating means in actuating said valve; and a fusible link which normally retains said detent means in said retaining position and releases said detent means for movement to said releasing position when said fusible link is melted when the environmental temperature rises above a predetermined temperature; wherein said actuating means includes means for providing one or more lateral components of force to move said detent means.
Claim 2
Independent Claim
178 words
A device for automatically actuating a gas discharge valve or the like in response to a temperature rise comprising: actuating means for actuating said valve; biasing means for normally biasing said actuating means toward a valve actuating position; detent means normally in a retaining position for retaining said actuating means in a valve deactuated position, said detent means being mounted for movement away from said retaining position to a releasing position in which said actuating means is released to move from said valve deactuated position to said valve actuating position to actuate said valve, said detent means movement being substantially at a right angle relative to the direction of movement of said actuating means in actuating said valve; and a fusible link which normally retains said detent means in said retaining position and releases said detent means for movement to said releasing position when said fusible link is melted when the environmental temperature rises above a predetermined temperature; wherein said actuating means includes means for providing one or more lateral components of force to move said detent means.
Claim 3
Dependent Claim
30 words
A device according to claim 1, wherein said actuating means includes one or more notches having sloping edges which engage said detent means to provide said lateral components of force.
Claim 4
Independent Claim
195 words
A device for automatically actuating a gas discharge valve or the like in response to a temperature rise comprising: actuating means for actuating said valve; biasing means for normally biasing said actuating means toward a valve actuating position; detent means normally in a retaining position for retaining said actuating means in a valve deactuated position, said detent means being mounted for movement away from said retaining position to a releasing position in which said actuating means is released to move from said valve deactuated position to said valve actuating position to actuate said valve, said detent means movement being substantially at a right angle relative to the direction of movement of said actuating means in actuating said valve; and a fusible link which normally retains said detent means in said retaining position and releases said detent means for movement to said releasing position when said fusible link is melted when the environmental temperature rises above a predetermined temperature; wherein said detent means comprises two plates on opposite sides of said actuating means, and said fusible link joins said plates and pulls them against said actuating means to retain the latter in said valve deactuated position.
Claim 5
Independent Claim
195 words
A device for automatically actuating a gas discharge valve or the like in response to a temperature rise comprising: actuating means for actuating said valve; biasing means for normally biasing said actuating means toward a valve actuating position; detent means normally in a retaining position for retaining said actuating means in a valve deactuated position, said detent means being mounted for movement away from said retaining position to a releasing position in which said actuating means is released to move from said valve deactuated position to said valve actuating position to actuate said valve, said detent means movement being substantially at a right angle relative to the direction of movement of said actuating means in actuating said valve; and a fusible link which normally retains said detent means in said retaining position and releases said detent means for movement to said releasing position when said fusible link is melted when the environmental temperature rises above a predetermined temperature; wherein said detent means comprises two plates on opposite sides of said actuating means, and said fusible link joins said plates and pulls them against said actuating means to retain the latter in said valve deactuated position.
Claim 6
Dependent Claim
14 words
A device according to claim 2, including spring means for moving said detent means.
Claim 7
Dependent Claim
27 words
A device according to claim 3, wherein said fusible link extends into the path of movement of said detent means to prevent movement of said detent means.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |