Patents Represented by Attorney Stephen J. Rudy
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Patent number: 4535658Abstract: A socket bit holder formed with a circumferential groove in a bit holder opening of the socket, the holder arranged to receive a tool bit having peripheral notch means, and a split ring in the circumferential groove arranged to engage the notch means of the tool bit whereby the bit will be maintained in the holder.Type: GrantFiled: March 5, 1982Date of Patent: August 20, 1985Assignee: Allen Manufacturing CompanyInventor: Paul J. Molinari
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Patent number: 4497197Abstract: A pneumatic hydraulic hand-held riveting tool having a pneumatic operative means arranged to generate pressure upon a hydraulic fluid whereby a rivet set plunger is brought into contact with a rivet to be set without deformation of the rivet, and being further arranged to generate hydraulic pressure on the rivet set plunger effective to set the rivet, as well as to provide rapid hydraulic pressure relief.Type: GrantFiled: February 18, 1983Date of Patent: February 5, 1985Assignee: Chicago Pneumatic Tool CompanyInventors: David A. Giardino, Joseph R. Groshans, Kenneth A. McHenry
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Patent number: 4477096Abstract: An elastic ring for maintaining a pin in a hole formed in a socket and work drive shaft of a rotary tool. The ring has integral fingers which project into the ends of the hole so that the pin cannot dislodge the ring by centrifugal force when the tool is operating at high speed. Several variations of the ring include weighted areas at portions of the ring midway between the fingers, which areas counterbalance centrifugal force on the ring to supplement holding force of the fingers upon the pin.Type: GrantFiled: August 2, 1982Date of Patent: October 16, 1984Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino
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Patent number: 4467565Abstract: A rotary orbital sander including a motor housing enclosing a motor, a drive shaft rotatable by the motor, which drive shaft has an off-set projecting portion, a pinion gear housing affixed to the motor housing, a carrier supported upon the shaft off-set projecting portion by two parallel arranged ball bearings, a sanding pad assemblage removably attached to the carrier, intermeshing spur gears arranged on the pinion gear housing and the carrier, a handle arranged for conduction of pressurized pneumatic medium to the motor, a throttle valve for regulation of pneumatic medium flow to the motor, a valve in the handle for cut-off of pneumatic medium to the throttle value, and a counter-balance weight affixed to the shaft off-set projecting portion, said weight being positioned so that its center of gravity of rotation is in the same plane as the center of gravity of rotation of--the carrier, the carrier supporting bearings and a sanding pad assembly attached to the carrier--said pinion gear housing having a circType: GrantFiled: August 2, 1982Date of Patent: August 28, 1984Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino, Joseph R. Groshans
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Patent number: 4431023Abstract: A pressure relief device for use on a liquid filled vessel, such as a power transformer having a coolant oil enclosed, which device includes a clamp arranged on the device so that the pressure relief function of the device is negated until the clamp is removed.Type: GrantFiled: April 1, 1983Date of Patent: February 14, 1984Assignee: Qualitrol CorporationInventor: Wendell D. Johnson
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Patent number: 4413396Abstract: A method for tightening a fastener to yield point wherein areas under a torque-angle curve--each of said areas including a constant abscissa--are successively measured. A decrease of area in a subsequently measured area, indicates that yield point of the fastener has occured. Upon attainment of yield point, the final torque and angular rotation parameters are checked to determine if pre-set values have been realized. The method includes a preliminary torque-angle curve measurement to determine if certain conditions are satisfied; failure to satisfy such conditions, aborts the tightening operation.Type: GrantFiled: September 2, 1980Date of Patent: November 8, 1983Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino, Joseph R. Groshans
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Patent number: 4403532Abstract: A pneumatically powered hand-held torque wrench having a handle portion which can be forced out of axial alignment with a work engaging end of the tool by manual force applied to the handle portion of the tool, whereby an enclosed torque tube will operate through a cam arrangement to cause the inner surface of the handle portion to move with a snap action into contact with one of the cams in the cam arrangement to cause an audible signal which will indicate to the operator that a predetermined torque has been applied to the set fastener. The snap action is accompanied by a slight slipping action which is sensed by the tool operator.Type: GrantFiled: September 24, 1981Date of Patent: September 13, 1983Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino
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Patent number: 4402209Abstract: A liquid level gauge calibration means which utilizes slip clutch action between the gauge pointer shaft and the float rod. In setting the gauge range, either of said elements may be held stationary at a given point while the other element is moved to coordinate with the given point. Upon release of the element being held, the slip clutch is effective to maintain the established relationship between the two elements. A tool is used to move the slip clutch as needed for desired relative setting of the two elements.Type: GrantFiled: June 11, 1981Date of Patent: September 6, 1983Assignee: Qualitrol CorporationInventor: Italo Di Domenico
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Patent number: 4400785Abstract: A method for monitoring torque and angle developed upon a fastener during fastener run-up and setting, which method utilizes successive area measurements under a torque-angle curve, said areas being compared at predetermined torque levels to provide an indication of whether or not the entire assembly operation satisfies established criteria.Auxiliary means may include tool stopping by automatic shut-off means, or tool stall, and read-out means in the form of a printed record, an alarm signal, e.g., flashing lights or sounding means, as well as marking of a fastener to indicate compliance with predetermined fastener assembly criteria.Type: GrantFiled: December 12, 1980Date of Patent: August 23, 1983Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino, Joseph R. Groshans
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Patent number: 4347902Abstract: This invention relates to an impact wrench clutch mechanism having a single roller element extending longitudinally between a motor driven coupling and an anvil. A hammer enclosing the roller member, has a single longitudinal pocket, engaged by the roller element for transmission of rotary movement to the hammer. The anvil has cam means arranged to activate the roller element whereby anvil rotation is accomplished with or without impacting, depending upon work load resistance applied to the anvil. The cam means are arranged to provide high rate of acceleration to the hammer whereby impacting values are unexpectedly high.Type: GrantFiled: December 18, 1979Date of Patent: September 7, 1982Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino
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Patent number: 4329077Abstract: An adaptor for use in driving a pipe into the ground by a ground piercing tool, which adaptor is arranged to be driven by the piercing tool. The adaptor consists of a three piece cylindrical unit held together by two garter springs. A tapered conical bore, formed in the adaptor, has a slope comparable with the slope formed on the forward end of a ground piercing tool used therewith. A portion of the adaptor is arranged to enter the end region of a pipe being worked upon, and a circumferential shoulder is formed on the adaptor, for engagement with the end of the pipe. Impact action upon the piercing tool not only wedges the adaptor into tight engagement with the inner region of the pipe, but also results in driving action upon the pipe by reason of the circumferential shoulder being in engagement with the pipe end.Type: GrantFiled: October 14, 1980Date of Patent: May 11, 1982Assignee: Allied Steel & Tractor Products, Inc.Inventor: Edward J. Bouplon
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Patent number: 4278103Abstract: An overspeed control means for pneumatic tools which includes a split ring valve slidably arranged in a circumferential groove formed in a cage member affixed to the rotor shaft of the tool. When the cage member exceeds a predetermined rotational speed, the ring valve will expand and be moved, by pressure differential acting thereupon, into engagement with a valve seat to block holes in a flow circuit for pneumatic medium being conducted to the rotor of the tool, whereby tool operation is terminated.Type: GrantFiled: January 7, 1980Date of Patent: July 14, 1981Assignee: Chicago Pneumatic Tool CompanyInventor: David A. Giardino
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Patent number: 4267747Abstract: A safety throttle lever for use on hand-held tools which lever has two operational modes, the first a tool non-operating mode, the second a tool operating mode. Cam-like means are arranged to restrict and guide the lever into the second operational mode when manual effort is applied to the lever. A spring means returns the lever to first operational mode when manual effort is released on the lever.Type: GrantFiled: April 26, 1979Date of Patent: May 19, 1981Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino, Gerrit van Nederynen
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Patent number: D259855Type: GrantFiled: August 17, 1978Date of Patent: July 14, 1981Assignee: The Jacobs Manufacturing Co., Ltd.Inventor: George C. Derbyshire
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Patent number: D261097Type: GrantFiled: June 25, 1979Date of Patent: October 6, 1981Assignee: Chicago Pneumatic Tool CompanyInventors: William K. Wallace, David A. Giardino
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Patent number: D261115Type: GrantFiled: May 31, 1979Date of Patent: October 6, 1981Assignee: Fox Valley Instrument CompanyInventors: Hugh T. Greenlee, Roy P. Hess, Donald C. McKinnon
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Patent number: D264192Type: GrantFiled: April 24, 1980Date of Patent: May 4, 1982Assignee: Fox Valley Instrument CompanyInventors: Hugh T. Greenlee, Roy P. Hess, Donald C. McKinnon, James R. Glasser
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Patent number: D264193Type: GrantFiled: April 24, 1980Date of Patent: May 4, 1982Assignee: Fox Valley Instrument CompanyInventors: Hugh T. Greenlee, Roy P. Hess, Donald C. McKinnon, James R. Glasser, Robert L. Umbarger
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Patent number: D270613Type: GrantFiled: January 15, 1981Date of Patent: September 20, 1983Assignee: Partlow CorporationInventor: Paul W. Morgan
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Patent number: D272136Type: GrantFiled: October 14, 1980Date of Patent: January 10, 1984Assignee: Fox Valley Instrument CompanyInventors: Donald C. McKinnon, Edward L. Tury