[특허]Portable gas-powered tool with linear motor

Portable gas-powered tool with linear motor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02B-071/04
출원번호	US-0831521 (1986-02-20)
발명자 / 주소	Nikolich Milovan (Wilmette IL)
출원인 / 주소	Signode Corporation (Glenview IL 02)
인용정보	피인용 횟수 : 69 인용 특허 : 0

초록 ▼

An efficient, portable, easy to operate tool employing a linear motor is disclosed that is powered by the gases produced from the internal combustion of a fuel and air mixture. A supply of liquified gas stored under pressure in a cylinder provides the source of power. The linear motor is slidably mounted within a cylinder to move reciprocally downwardly and upwardly through a driving and return stroke. A combustion chamber is formed at the upper end of the cylinder. A spark plug powered by a piezo-electric firing device is located within the combustion chamber. The combustion chamber features a turbulence generator, such as a fan, driven by an electric motor which is continuously in operation when the tool is in use. A main valve mechanism actuated by a set of lifting rods that are moved upwardly and downwardly when the tool is moved towards and away from the workpiece, is used to control the opening and closing of the combustion chamber and to control the flow of fresh air through the combustion chamber. When the combustion chamber is isolated from the atmosphere and the fuel and air are thoroughly mixed, the spark plug is fired to explode the fuel and air mixture and force the linear motor through its driving stroke. The linear motor is returned to its driving position by a spring or air acting against the underside of the linear motor. The unique use of the electric fan improves the overall operational efficiency of the tool and the utilization of the liquified combustible gas.

대표청구항 ▼

A self-starting portable tool comprising a housing, an elongated cylinder in said housing, a piston having an upper face and a lower face, said piston being mounted in said cylinder to be driven between an upper position of rest and a lowermost position and forming a motor member, a working member attached to said piston, a combustion chamber formed within said housing and having the upper face of said piston defining a wall portion of said combustion chamber, means for providing a fuel and air mixture in said chamber, means for igniting and exploding said mixture in said combustion chamber to drive said piston through a driving stroke from said upper position to said lowermost position to operate said working member, and return means for causing said piston to move upwardly from said lowermost position to said upper position of rest, said return means including outlet means in said elongated cylinder between its ends for communicating said cylinder with ambient atmosphere and being disposed below said upper position of rest and above said lowermost position of said piston, such that when said piston is driven towards said lowermost position, said piston moves past said outlet means thereby to place said combustion chamber in communication with said outlet means to exhaust a portion of combustion gases from said combustion chamber to ambient atmosphere and cause a reduction in temperature of the combustion gases remaining in the combustion chamber, and said return means further including bumper means at the lower end of the cylinder for initially moving said piston upwardly from said lowermost position, said combustion chamber above said upper face being out of communication with ambient atmosphere during the further return of said piston to said upper position of rest, said further return of said piston to said upper position of rest being substantially caused by throughout further such return, said return means producing an upwardly acting pressure differential on said upper and lower faces of said piston induced by the reduction in temperature of the combustion gases above the upper face to produce a sharp reduction of pressure in said combustion chamber to below ambient pressure.

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Moeller,Larry M.; Fabin,Joseph E.; Doherty,James E.; Kwok,Kui Chiu; Shkolnikov,Yury, Fan control for combustion-powered fastener-driving tool based on firing rate.
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Turk, Robert L., Fan motor suspension mount for a combustion-powered tool.
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Turk,Robert L., Fan motor suspension mount for a combustion-powered tool.
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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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연합인증

Portable gas-powered tool with linear motor 원문보기

초록 ▼

대표청구항 ▼

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이 특허를 인용한 특허 (69)

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연합인증

Portable gas-powered tool with linear motor 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (69)

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