Responsive To Length Of Stroke Of Means Reciprocating Hammer Head Or Tool Patents (Class 173/10)
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Patent number: 11542678Abstract: This pile installation system for an offshore foundation construction includes a main body, a movable part and a first means for attaching the main body to a frame of reference. This frame of reference is configured to act as a counterweight. It further includes a second means for attaching the movable part to a pile to be installed, and the movable part may be moved, with respect to the main body, in translation about the direction of an insertion axis.Type: GrantFiled: June 18, 2019Date of Patent: January 3, 2023Assignee: VALLOUREC DEUTSCHLAND GmbHInventors: Andreas Lammers, Ralf Hojda, Daniel Stroetgen, Lieven Van Melckebeke, Stefan Reins, Hans Pihl, Niels Haakman, Stefan Bardenhagen, Stefan Doerfeldt, Christophe Jaeck, Martin Eilers, Jens Fiebig, Phillip Jorgensen
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Fastening tool with an internal combustion engine with a unique opening and closing chamber abutment
Patent number: 8800681Abstract: The tool is to be used for driving fastening members into a supporting material. It comprises a cylinder (3), with a piston (5), a combustion chamber (1, 11), a cylinder head (12) bearing a fuel igniting means (36) in the chamber (1), a pin guide (9), for receiving a fastening member and the piston (5) shaft (7) and a cage (21). Return means are provided for opening the chamber (11), driving the pin guide (9) forwardly, opening and closing abutment means for the chamber (11). There are provided: one single central spring (32) for opening the chamber (11) and, on each side of the tool, one single opening and closing side chamber abutment (18, 55), integral with the chamber (11) and mobile in translation on the corresponding side of the cylinder (3).Type: GrantFiled: November 30, 2010Date of Patent: August 12, 2014Assignee: Societe de Prospection et d'Inventions Techniques SpitInventors: Ludovic Rousson, Pierre Cordeiro, Alain Vettoretti, Patrick Herelier -
Patent number: 8708058Abstract: An arrangement and a method for controlling at least one drill parameter when drilling in rock with a rock drill, comprising an impulse-generating device arranged to induce shock waves in a tool acting against the rock with a percussive force generated via a shock wave-generating pressure. The arrangement and method comprises a control system for determining a first parameter value representing the damping pressure, determining a second parameter value representing the rotation pressure of a drill bit, determining a deviation between the second parameter value and a rotation pressure reference value, determining a parameter reference value depending on the deviation, and regulating the percussion pressure based on a function of the deviation and the parameter reference value.Type: GrantFiled: October 9, 2009Date of Patent: April 29, 2014Assignee: Atlas Copco Rock Drills ABInventors: Jonas Sinnerstad, Magnus Olsson, Marcus LeĆ¼
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Patent number: 8464806Abstract: The tool comprises an engine for propelling a piston including a shaft for driving a fastening member into a supporting material and through a pin guide, with means for adjusting the depth of drive of the piston shaft outside the pin guide at the end of the propulsion and at the stop of the piston in abutment against stop means. The pin guide is mounted free in translation and the depth of drive adjusting means comprise an adjustment knurl with a knurl shaft arranged so as to be in abutment against the pin guide and to push the pin guide forwards under the rotation action of the knurl.Type: GrantFiled: December 9, 2010Date of Patent: June 18, 2013Assignee: Societe de Prospection et d'Inventions Techniques SpitInventors: Ludovic Rousson, Pierre Cordeiro, Alain Vettoretti, Patrick Herelier
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Publication number: 20110024144Abstract: The present invention relates to a method for controlling a power tool comprising a housing, an electric motor, a tool holder for supporting a tool bit and a conversion mechanism for converting the rotational movement of the output shaft of the motor into a reciprocating movement of the tool bit when being supporting in the tool holder, wherein oscillations of an element of the power tool are detected, wherein a quantity characterizing the oscillations is monitored and wherein the rotational speed of the electric motor is controlled such that the quantity does not exceed a preset value.Type: ApplicationFiled: July 31, 2009Publication date: February 3, 2011Applicant: BLACK AND DECKER INC.Inventors: Robert Alan Usselman, Benjamin Schmidt
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Publication number: 20080156842Abstract: A fastener-driving tool includes a combustion power source configured for driving a driver blade linearly towards a workpiece, and an electrical power source associated with the combustion power source for rotationally driving the driver blade upon completion of the linear travel, both power sources being disposed in the tool.Type: ApplicationFiled: December 27, 2007Publication date: July 3, 2008Inventor: Cheryl L. Panasik
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Patent number: 6843327Abstract: The invention is based on a hand power tool, in particular a drill hammer and/or a chipping hammer, having a striking mechanism (14) capable of being driven in a housing (10) by an electric motor (12), via which an insertable tool (18) situated in a tool mount (16) is capable of being driven in an impacting manner, and having a sensor unit (30) via which a characteristic value for a no-load position can be detected. It is proposed that, when a no-load position is detected via a motor control unit (22), the electric motor (12) and, therefore, the striking mechanism (14) can be actively decelerated.Type: GrantFiled: March 19, 2002Date of Patent: January 18, 2005Assignee: Robert Bosch GmbHInventors: Gerhard Meixner, Oliver Zirn, Egbert Schneider
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Patent number: 6655568Abstract: A setting tool including a bolt guide (2) secured in the tool housing (1) against displacement in an axial direction, a spring-biased press-on feeler (6) and an axially displaceable safety sleeve (9) surrounding the press-on feeler (6) and supported for joint axial displacement with the press-on feeler and for axial displacement relative thereto.Type: GrantFiled: September 25, 2001Date of Patent: December 2, 2003Assignee: Hilti AktiengesellschaftInventor: Joachim Thieleke
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Patent number: 5607022Abstract: A device removably attaches to a skid steer and is used for breaking up asphalt, concrete, etc. A hollow rod is suspended from the device, and a nipple provides liquid communication to the interior rod chamber of the hollow rod. A head is provided on a lower end of the rod and a cylinder is movably provided around the rod's lower end so that upper and lower cylinder chambers are formed within the cylinder, above and below the head. Perforations provided in the lower end of the rod provide liquid communication between the rod chamber and the upper cylinder chamber. The lower cylinder chamber is charged with gas. A weight and a breaking tool attach to the bottom end of the cylinder and move upward and downward in conjunction therewith. A switch provided on the frame is tripped as the weight is raised, thus sending an electrical impulse to a timer, causing it to momentarily supply electricity to dump and directional valves, simultaneously closing them.Type: GrantFiled: March 10, 1995Date of Patent: March 4, 1997Inventors: Leon R. Walker, Thomas P. Clark
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Patent number: 5112338Abstract: A hand-held surgical rotary impact tool and instrument extension for removing artificial hip, or acetabular, cups of a hip joint by rotating the cup a predetermined number of degrees. This rotational limitation is provided by a pin and arcuate groove connection between a fixed housing and rotatable shaft. While instrument extensions are sized to allow for different acetabular, or hip, cups, the cup engaging end can have radially adjustable pins for permitting a variable diameter for connection to a cup.Type: GrantFiled: February 11, 1991Date of Patent: May 12, 1992Inventor: William E. Anspach, III
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Patent number: 4699223Abstract: In percussion drilling such as earth drilling, a hammer piston driven by pressure medium is axially reciprocally movable in a drill body to transfer impact energy to a drill shank connectable to a drill bit. The axial position of the drill shank in the drill body is monitored, and the impact energy of the hammer piston is varied as a function of said position. For this purpose a sensor in the drill body produces a signal corresponding to the axial position of the drill shank in the drill body. By means of a control valve, the signal is used to control the pressure of the pressure medium actuating the hammer piston, thereby varying the impact energy.Type: GrantFiled: November 6, 1986Date of Patent: October 13, 1987Assignee: Stabilator ABInventor: John P. Noren
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Patent number: 4580640Abstract: A pickup is connected to a system of sheaves of a mobile hydraulic hammer for providing a signal proportional to velocity of a hammer weight. The pickup is connected to the input of a differentiating circuit, and the output of the differentiating circuit is connected to the starting input of an electronic timer. Two-level output of the timer is connected to hydraulic valves that control the lifting and dropping of a hammer weight. The signal applied to the starting input of the timer has two states, one state resulting from any noticeable acceleration of the hammer weight and the other state resulting from zero acceleration. The timer starts in response to zero acceleration at the time of impact of the hammer weight and provides a signal to cause the hammer weight to be lifted without delay to a predetermined height according to a predetermined timing period, the height always being with reference to the level at which impact occurred.Type: GrantFiled: April 1, 1985Date of Patent: April 8, 1986Assignee: East Moline Metal Products CompanyInventor: Robert R. Boldt
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Patent number: 4534419Abstract: A method and apparatus for guiding a body into the ground by means of a single hammer acted on by a reaction mass which is driven by a double-acting piston-cylinder unit via a controlled, periodically changing stream of pressure medium and which generates forces which act on the body in its longitudinal direction, the body being driven by first causing the pressure stream to have an approximately sinusoidally pulsating form for imparting a vibratory movement to the hammer, and then, when the speed with which the body is being driven into the ground decreases below a given minimum value, causing the pressure medium to drive the reaction mass according to a periodic, approximately unsteady displacement-time function for imparting a hammering movement to the hammer, while, during such hammering movement, simultaneously monitoring the hammering energy being generated.Type: GrantFiled: July 20, 1978Date of Patent: August 13, 1985Assignee: Koehring GmbHInventor: Gulertan Vural
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Patent number: 4403890Abstract: A method of and a system for laying a pipe underground wherein a head attached to the leading end of the pipe to be laid underground is caused to move in vibratory movement while a propelling force is exerted on the rear end of the pipe to obtain penetration of the earth by the pipe. While the head is forced to move ahead by the propelling force exerted on the rear end of the pipe, the vibration of the head is measured. When the vibration drops in magnitude, the propelling force is decreased to reduce the speed at which the head is forced to move ahead; so as to cause restoration of the vibration to the original level, and when the vibration rises, the propelling force is increased to increase the speed at which the head is forced to move ahead.Type: GrantFiled: March 5, 1982Date of Patent: September 13, 1983Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Naoki Miyanagi, Kojiro Ogata
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Patent number: 4072198Abstract: An hydraulic rock drill having an hydraulically reciprocable hammer piston arranged to pound an anvil carrying a drill string. A sleeve type shiftable valve periodically engaged by the piston to effect alternate application to and relief of pressurized hydraulic fluid from the piston cylinder to reciprocate the piston. A constant supply of pressurized hydraulic fluid to actuate the piston is provided by a surrounding reservoir. Hydraulic feed means responds to a predetermined displacement of the anvil relative to the housing to feed the housing relative to the work in accordance with the progress of the anvil. Hydraulic means serves to cushion rebounding actions of the anvil; and means is provided to apply cooling fluid to the sliding surfaces of the tool during its operation.Type: GrantFiled: April 30, 1976Date of Patent: February 7, 1978Assignee: Chicago Pneumatic Tool CompanyInventor: Lester A. Amtsberg
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Patent number: 3945442Abstract: A rock drill having a control valve hydraulically operable to effect feed of oil from a bulk reservoir alternately to opposite ends of a power piston carrying a drill string to reciprocate the piston; having a motor for rotating the piston as the latter reciprocates; having a snubber for absorbing shocks in the event of piston override; and having carriage means automatically and hydraulically operable during reciprocation of the piston to feed the tool along a guide channel relative to the work.Type: GrantFiled: October 7, 1974Date of Patent: March 23, 1976Assignee: Chicago Pneumatic Tool CompanyInventor: Lester A. Amtsberg