[특허]Chain saw tensioning apparatus

Chain saw tensioning apparatus 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B27B-017/14
출원번호	US-0346518 (1994-11-29)
발명자 / 주소	Ra Do-Jin (65-84 Booth St. Apt. 1L Rego Park NY 11374)
인용정보	피인용 횟수 : 34 인용 특허 : 0

초록 ▼

The chain saw tensioner of the present invention provides a sheath anchored at one end to the housing of the chain saw which sheath receives a tensioning shaft slidably therein. The tensioning shaft is interconnected with the housing by a tension screw and is slidably adjustable with respect to the sheath by actuating the tensioning screw. The tensioning shaft and the sheath have matching and aligned slots that cooperate to receive a sliding bolt therethrough. The sliding bolt is interconnected with the blade of the saw and, by actuating the tensioning screw, it may be moved forward with respect to the housing of the saw to move the saw blade forward to tension the chain. Included within the tensioning shaft is a spring interconnected with a bolt rest for receiving and supporting the sliding bolt. The spring provides a bias which acts on the bolt to bias the bolt, and accordingly the saw blade, forward with respect to the housing to tension the chain. The spring further allows the bolt to move rearward of the tensioning shaft, and accordingly, rearward of the housing to decrease tension on the chain to prevent over tensioning of the chain.

대표청구항 ▼

An apparatus for tensioning a chain of a chain saw comprising: tensioner mounts for mounting the apparatus within a housing of the chain saw; tensioning guide means interconnected with the tensioner mounts, the tensioner guide means comprising: a tensioner guide channel having a side; a slot extending along the side; an aperture in the side positioned rearward of the slot; a tensioner box means interconnected with the tensioning guide means, the tensioner box means comprising: opposing sides with slots in registration with the slot in the tensioning guide means; an aperture extending through the opposing sides in registration with the aperture in the tensioning guide means; tensioner shaft means telescopically received by the tensioner box means, the tensioner shaft means comprising sides with slots corresponding to the slots in the tensioner box means and the tensioning guide means; a tension screw interconnected with the tensioner shaft means by a tensioner shank, at one end, the tension screw adjustably interconnected with the housing of the chain saw at the other end thereof; a tensioner nut for adjustably engaging the tension screw with the housing of the chain saw; a spring within the tensioner shaft means; a bolt grip within the tensioner shaft means, the bolt grip interconnected with the spring and biased forward with respect thereto; an anchor bolt extending through the tensioning guide means, the tensioner box means and a slot in a chain saw blade; a slidable bolt extending through the slot in the tensioning guide means, the slot in the tensioner box means, the slot in the tensioner shaft means, and an aperture in a chain saw blade; the bolt grip contacting the slidable bolt and acting against the slidable bolt to bias the bolt forward with respect to the housing of the chain saw, to bias the blade of the chain saw forward with respect to the housing, to tension the chain riding the chain saw blade.

이 특허를 인용한 특허 (34)

King, William C., Assisted braking in chain saws.
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Keeton,William B.; Warfel,Paul A., Bar knob with integrated lock.
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Fisher,David B.; Champlin,David E.; Sims,Douglas, Chain saw.
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Franke, Jeff; Warfel, Paul; Tynes, Rodney, Chain saw adjuster.
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Riha,Gary D., Chain saw automatic tensioner.
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King, William C., Chain saw chain tensioning and braking system.
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King,William C., Chain saw chain tensioning and braking system.
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Calkins Eugene E. ; Huntington Kent L. ; Lamey Mark D., Chain saw guide bar equipped with chain tensioner.
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Igawa Hayato,JPX ; Okochi Hiromi,JPX ; Iizuka Akinori,JPX, Chain saw guide bar with chain-tightening device.
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Pellenc, Roger, Chain saw with tension adjustment.
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Lee, Chih-Hsing, Chain saw with tool-free chain tension adjustment mechanism.
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Warfel,Paul A.; McKeithen,Steven; Zapanata,Dennis; Keeton,William B., Chain saw with tool-less chain tensioner and guide bar lock.
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Takayanagi, Yoshiaki; Sugiyama, Masashi, Chain tension adjusting apparatus for chain saw.
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Mizutani Makoto,JPX ; Abe Hideki,JPX, Chain tension device in a chain saw.
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Gibson Duane M. ; Hille Arvin A. ; Huntington Kent L. ; Weber Johann, Chain tensioner for chain saw.
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Tynes,Rodney W.; Warfel,Paul A.; Zapanta,Dennis S., Chainsaw bar adjustment assembly with breakaway adjustment pin.
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Behbahany,Shane, Chainsaw bar tensioning apparatus.
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Fisher, David B.; Ford, Todd J., Chainsaw tensioning device.
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Fisher, David B.; Ford, Todd J., Chainsaw tensioning device.
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Philbrick, Clive M.; Craft, Peter K., Freeing transmit memory on a network interface device prior to receiving an acknowledgement that transmit data has been received by a remote device.
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Zimmermann, Helmut; Lank, Jonas, Handheld work apparatus having a tensioning device for a chain.
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Nilsson, Gunnar, Hydraulic stretching device for a saw chain.
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Haughey, Michael W., Lever chain adjuster for a chain saw.
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Sundstrom Erik,SEX, Method and apparatus for adjusting the tension on a saw chain.
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King, William C., Method of braking a chain saw.
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Peterson Robin A., Methods and apparatus for adjusting chain saw tension.
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Soika, Martin; Droste, Manfred, Power cutter.
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Javier B. Tirado ; Alicia Prado, Power cutting device.
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Engelfried, Uwe; Grulich, Petr; Duerr, Thomas, Power cutting tool.
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Kawamura,Kunimune, Saw chain tensioning mechanism.
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Engelfried, Uwe; Grulich, Petr, Separating device for a machine tool.
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Buttery, Jeremy L.; Shymkus, Robert M.; Lucas, Delbert E.; Atchley, Robert, Torque-limited chain tensioning for power tools.
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Sundberg, Niklas, Transmission belt adjustment for a power cutter.
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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

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Chain saw tensioning apparatus 원문보기

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이 특허를 인용한 특허 (34)

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Chain saw tensioning apparatus 원문보기

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이 특허를 인용한 특허 (34)

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