[특허]Pneumopercussive machine

[미국특허] Pneumopercussive machine 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-001/00 E21B-004/14 E21B-007/26
출원번호	US-0830756 (1992-02-03)
발명자 / 주소	Spektor Michael B. (Klamath Falls OR)
출원인 / 주소	MBS Advanced Engineering Systems (Klamath Falls OR 02)
인용정보	피인용 횟수 : 23 인용 특허 : 0

초록 ▼

A self-propelled, pneumopercussive, cyclic action, ground penetrating machine (200) has decreased energy consumption and increased average working velocity compared to conventional machines. This is obtained in part by a valve-operated air-distribution mechanism (203) having separate forward and reverse compressed air supply lines (35, 37), which mechanism (203) does not limit the length of the forward and backward strokes of the striker (202). This mechanism allows the backward stroke chamber (75) to be connected with the atmosphere during the entire forward stroke of the striker (202). This eliminates generation of an air buffer in the backward stroke chamber (75) and, consequently, the striker (202) does not lose part of its kinetic energy before impact. The invention also provides a cyclic action braking mechanism (204), a forward/reverse mode control system (205) which can be pneumatically actuated, a movable chisel (207) which utilizes the energy of the striker more efficiently and has a gasket (72) to prevent jamming, and a sensor (208) for monitoring the impact frequency of the machine (200) so that it can be quickly switched to reverse mode upon encountering an obstacle.

대표청구항 ▼

A pneumopercussive machine, comprising: a housing having an elongated internal chamber; a striker disposed for lengthwise reciprocation in said internal chamber of said housing for impacting against a front internal impact surface of said internal chamber; and an air distributing mechanism connectable to a supply of compressed air for reciprocating said striker within said housing, including: a first air passage disposed for communication with a first compressed air supply line, which first air passage conducts compressed air from the first compressed air supply line to a first outlet port which opens near the rear end of said internal chamber; a second air passage disposed for communication with a second compressed air supply line, which second air passage conducts compressed air from the second compressed air supply line to a second outlet port which opens near the front end of said internal chamber; and a stroke control valve which moves between a forward stroke position and a rearward stroke position for alternately establishing communication between the first outlet port and the first compressed air supply line and the second outlet port and the second air supply line, respectively, thereby defining a variable-volume, forward stroke chamber located behind said striker wherein air from said first compressed air supply line propels the striker forward during the forward stroke of the striker, and a variable-volume, rearward stroke chamber located ahead of said striker wherein air from said second compressed air supply line propels the striker rearwardly during the rearward stroke of the striker.

이 특허를 인용한 특허 (23) 인용/피인용 타임라인 분석

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von Gynz Rekowski,Gunther H H, Percussion tool and method.
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Randa,Mark D., Pneumatic ground piercing tool.
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Randa Mark D. ; Wentworth Steven W. ; Crane Robert F., Pneumatic ground piercing tool with movable chisel head.
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Dock, Matthew L.; Sharp, Richard Felix; Gunsaulis, Floyd R., Rotary driven drilling hammer.
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Prater ; Jr. Glen ; Hnat William P. ; Collins Robert L. ; Wang Songnian, Small diameter impact boring tool.
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Prater ; Jr. Glen ; Hnat William P. ; Collins Robert L. ; Wang Songnian, Small diameter impact boring tool.
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Hyde, Roderick A.; Ishikawa, Muriel Y.; Kare, Jordin T.; Myhrvold, Nathan P.; Tegreene, Clarence T.; Whitmer, Charles; Wood, Jr., Lowell L.; Wood, Victoria Y. H., Umbilical technique for robotic mineral mole.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Pneumopercussive machine 원문보기