IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0189861
(1998-11-12)
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발명자
/ 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
7 인용 특허 :
9 |
초록
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The center locator tool has a flat, rectangular case with a top wall, a bottom wall, and two opposing side walls. The interior of the case houses a spur gear rotatably mounted on a center post extending through the center of the case, the center post having a bore defined axially therein. A pair of
The center locator tool has a flat, rectangular case with a top wall, a bottom wall, and two opposing side walls. The interior of the case houses a spur gear rotatably mounted on a center post extending through the center of the case, the center post having a bore defined axially therein. A pair of arms are mounted so that the arms are slidable through the case on opposite sides of the spur gear, each arm having a rack defined in its edge which engages the spur gear so that when one arm is extended from the case, the other arm is extended an equal distance in the opposite direction. Each arm has a groove defined in its bottom surface for engaging a guide projecting from the bottom wall of the case. The end of each arm has a work engaging plate forming a "V" shape, the opening of the "V" facing towards the center of the tool, the plates depending from the ends of the arms and being adapted for engaging a square or circular workpiece. When the "V" plates engage the diagonally opposing corners of a square or opposite sides of a circle, the center of the surface lies below the bore defined in the center post. An alternative embodiment of the tool has a wheel with an O-ring about its circumference frictionally engaging slots defined in the edges of the arms in place of the spur gear and rack mechanism.
대표청구항
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[ I claim:] [1.] A center locator tool for locating the center of a workpiece, comprising:a) a rectangular case having a top wall, a bottom wall, and two opposing side walls;b) a pair of flat, rectangular arms slidable through said case, each arm having an edge and a rack defined in the edge, the ra
[ I claim:] [1.] A center locator tool for locating the center of a workpiece, comprising:a) a rectangular case having a top wall, a bottom wall, and two opposing side walls;b) a pair of flat, rectangular arms slidable through said case, each arm having an edge and a rack defined in the edge, the rack being recessed in the edge of the arm, and having a first end and a second end, the first end having a raised stop extending transversely across the arm for preventing the arm from sliding through said case, each arm further having a bottom surface and a guide slot defined in the bottom surface extending longitudinally for the length of the arm;c) work engaging means disposed at the second end of each of said arms for engaging a workpiece;d) a center post having a bore defined therein attached to the center of the bottom wall of said case and extending between the bottom wall and the top wall of the case, the center post being internally threaded and externally threaded about an upper portion;e) a spur gear rotatably disposed about said center post, the spur gear engaging the racks defined in said pair of arms, said arms being disposed in parallel spaced relation on opposite sides of the spur gear, so that when one of said arms is slidably extended through said case, the other said arm is slidably extended through said case in the opposite direction for an equal distance; andf) a thumbwheel having a bore defined axially therein, the thumbwheel being internally threaded and threadably engaging said center post, the bore defined in the thumbwheel being axially aligned with the bore defined in said center post, the thumbwheel being adapted for locking said pair of arms in a fixed position; andg) a pair of guide ridges projecting from the bottom wall of said case and extending transversely across the width of said case in parallel spaced relation on opposite sides of said center post, the guide ridges slidably engaging the guide slots in order to ensure said arms move rectilinearly without also moving laterally when they are extended through said case.
이 특허에 인용된 특허 (9)
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Draves Theodore K., Adjustable router.
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Stahl Werner (Solms-Oberndorf DEX) Frobse Walter (Solms-Oberndorf DEX) Lisfeld Robert (Greifenstein-Ulm DEX), Adjusting device for the stage of an optical instrument.
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Miodragovic Milan,CHX, Alignment device.
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Jones ; Jr. ; Hiram, Center finder.
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Work Robert H. (3558 Warren Rd. Cleveland OH 44111), Center finding device.
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Chung Hun H. (No. 98-13 ; Tung Yang Rd. Fon Yuan City TWX), Centering device.
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Marino Carlo (1420 Tasker St. Philadelphia PA 19145), Device for locating center positions.
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Nestor Jack (110 1st Ter. Miami Beach FL 33139) Shoemaker ; Jr. William A. (6860 SW. 96th St. Miami FL 33156), Golden proportion calipers.
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Follett Earl C. (Walnut Creek CA), Mechanical point locator.
이 특허를 인용한 특허 (7)
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Servin,Juvenal; Taber,Brian, Cabinet partition positioner.
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Lyman, Jr.,Hugh Marion, Center point locator device.
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Brown, John W., Centerpoint marking tool.
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Hinz, Krystian, Marking jig for locating mounting holes for handles and pulls.
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Long, Fredrick D., Pipe fitting wireform for measuring linear distance and method.
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Zars, Leif Alexander, System for marking an arc segment.
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Lane, Troy R., Vision system.
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