IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0537169
(1983-09-29)
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발명자
/ 주소 |
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대리인 / 주소 |
Owen, Wickersham & Erickson
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인용정보 |
피인용 횟수 :
8 인용 특허 :
2 |
초록
▼
The invention contemplates the shutting down of such fields of endeavor which otherwise would likely be injurious to life or property on occasions of earthquakes and the like, and comprises a system wherein disuse in the said fields of endeavor occurs automatically upon the major vibration of one or
The invention contemplates the shutting down of such fields of endeavor which otherwise would likely be injurious to life or property on occasions of earthquakes and the like, and comprises a system wherein disuse in the said fields of endeavor occurs automatically upon the major vibration of one or more essential parts or components of a device causing the said components or parts to be disengaged from the remainder of the system and the shut-off operation thereof. As will appear from the disclosure hereinafter set forth in this application of a light duty and a heavy duty embodiment of the device, the systems set forth rely upon a spring loaded wheel which has a specially shaped under-section so to engage a valve or the like in the supply line of the field of endeavor, and being a part of a system which is very sensitive to vibration, and through slippage the parts of the system are released and the valve is shut off. The system, it is clear, is applicable to numerous fields of use.
대표청구항
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1. An earthquake-responsive shut-off device for a controlling shut-off valve having a valve-controlling rotary stem, comprising: a rotary wheel having a hub portion for direct engagement with a said stem for rotation thereof and having a projecting member extending out from its periphery, a supp
1. An earthquake-responsive shut-off device for a controlling shut-off valve having a valve-controlling rotary stem, comprising: a rotary wheel having a hub portion for direct engagement with a said stem for rotation thereof and having a projecting member extending out from its periphery, a support plate having an opening through which said hub portion can be engaged with a said stem, spring means with one end secured to said plate and the other end secured to said wheel for building up force upon rotation of said wheel in one rotary direction to a latching position and releasing said force upon release from the latching portion, thereby rotating said wheel in the opposite direction, first latching means rotatably secured to said plate at a first axis and having a latch on one side of said axis for latching by engagement with said projecting member upon manual rotation of said wheel in said one direction to said latching position, second latching means rotatably secured to said plate at a second axis and having first and second arms, said first arm being engaged and rotated by said first latching means when said projecting member engages and is latched by said latch, a latch arm having a base secured in a stationary position to said plate adjacent to said second latching means and having a latch portion engaged by said second arm when said second latching means is engaged and rotated by said first latching means, so that said second arm is then latched to said latch portion, and vibration-responsive latch release means for releasing said second arm from said latch portion when there is significant vibration, such as by an earthquake, so that said first arm then acts to release said first latching means, whereupon said spring means then rotates said wheel in said opposite direction. 2. The device of claim 1 having stationary means secured to said plate and cooperating stop means on said wheel for limiting rotation of said wheel in said opposite direction. 3. The device of claim 1 having manually set means for retaining said projecting member in its latched position regardless of vibration. 4. The device of claim 1 having manually actuated means for releasing said projecting member from its latched position in the absence of vibration. 5. An earthquake-responsive shut-off device for a controlling shut-off valve having a valve-controlling rotary stem, comprising: a rotary wheel having a hub portion for direct engagement with a said stem for rotation thereof and having a projecting member extending out from its periphery, a support plate having an opening through which said hub portion can be engaged with a said stem, spring means with one end secured to said plate and the other end secured to said wheel for building up force upon rotation of said wheel in one rotary direction to a latching position and releasing said force upon release from the latching portion, thereby rotating said wheel in the opposite direction, first latching means rotatably secured to said plate at a first axis and having a latch on one side of said axis for latching by engagement with said projecting member upon manual rotation of said wheel in said one direction to said latching position, and a first arm on the opposite side of said axis, second latching means rotatably secured to said plate at a second axis and having second and third arms on opposite sides of said second axis, said second arm being engaged and rotated by said first arm when said projecting member engages and is latched by said latch, a latch arm having a base secured in a stationary position to said plate adjacent to said second latching means and having a distal latch portion engaged by said third arm when said second latching means is engaged and rotated by said first arm, so that said third arm is then latched to said latch portion, and vibration-responsive latch release means for releasing said third arm from said latch portion when there is significant vibration, such as by an earthquake, so that said second arm then releases said first latching means, whereupon said spring means then rotates a said wheel in said opposite direction. 6. The device of claim 5 wherein said projecting member projects out from said wheel in an axial direction, said first latching means having a latching radial edge and a cammed curved opposite edge for facilitating latching. 7. The device of claim 5 wherein said second latching means has a first portion of said second arm bent out from a second portion thereof, said first portion being engaged by said first arm only during the latching operation and said second portion thereupon being engaged to maintain said latching. 8. The device of claim 5 having a lever pivoted to said plate and engageable with said first arm for manually maintaining its latched position in spite of vibration. 9. The device of claim 5 having a lever pivoted to said plate for manually engaging said latch arm and releasing said third arm from said latch portion, whenever desired. 10. The device of claim 5 wherein said vibration-responsive latch release means comprises a weighted oscillator joined to a bell-shaped striker via a ball resting on a bowl-shaped member that is secured to said plate, said striker having a portion surrounding an uppermost end of said latch arm. 11. An earthquake-responsive shut-off device for a controlling shut-off valve having a valve-controlling rotary stem, comprising: a rotary wheel having a hub portion for direct engagement with a said stem for rotation thereof and having a projecting member extending out from its periphery, a support plate having an opening through which said hub portion can be engaged with a said stem, spring means with one end secured to said plate and the other end secured to said wheel for building up force upon rotation of said wheel in one rotary direction to a latching position and releasing said force upon release from the latching portion, thereby rotating said wheel in the opposite direction, a second wheel rotatably mounted on said plate and having a latch adjacent to its periphery for latching by engagement with said projecting member upon rotation of said main wheel in said one direction, and also having a toothed peripheral portion, a third wheel rotatably mounted on said plate and having a toothed peripheral portion in engagement with the toothed peripheral portion of said second wheel, auxiliary latching means rotatably secured to said plate and having first and second arms angularly related to each other, said first arm being rotatably secured to said third wheel near the periphery thereof, a latch arm having a base secured in a stationary position to said plate adjacent to said auxiliary latching means and having a latch portion engaged by said second arm when said auxiliary latching means is moved by said third wheel upon latching of said first wheel's projecting member to said latch on said second wheel, so that said second arm is then latched to said latch portion, and vibration-responsive latch release means for releasing said second arm from said latch portion when there is significant vibration, such as by an earthquake, with resultant movement of said first arm so that said second and third wheels rotate and then release said latch, whereupon said wheel is rotated in said opposite direction by said spring means. 12. The device of claim 11 wherein said vibration-responsive latch-release means comprises a weighed ball supported on a shank connected to a striker and being freely movable from side to side upon occurrence of substantial vibration, said striker comprising a bifurcated member with a branch on each side of the upper end of said latch arm and engaged with it when vibrated.
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