Hammer Head Constitutes Or Fixed To Drive Motor Cylinder Patents (Class 173/125)
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Patent number: 10954645Abstract: An apparatus for driving a pile section having a central opening into the ground includes a mast attachment with roped hydraulic cylinders, a high frequency hydraulic impact hammer connected with the mast, and a drive cap. The mast with roped hydraulic cylinders provides for vertical movement of the high frequency hydraulic impact hammer, and the drive cap connects with the high frequency hydraulic impact hammer and a pile section to transfer the drive force of the hammer to the pile section. When the mast is connected with an excavator and the drive cap is connected with the high frequency hydraulic impact hammer, a pile section is connected with the drive cap lower end and the high frequency hydraulic impact hammer is operated to drive the pile section into the ground. A system for driving piles into the ground includes an excavator, an apparatus connected with the excavator, and a plurality of base pile sections.Type: GrantFiled: August 23, 2019Date of Patent: March 23, 2021Inventor: Christopher DeBlauw
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Patent number: 10865603Abstract: The present invention relates to a core drill apparatus which is mounted to a working boom of an excavator so as to drill rock or a concrete structure and, more particularly, to a core drill apparatus for installation in an excavator, which comprises a ring gear and a plurality of elevation cylinders that are connected to and installed in a working support frame mounted to the end of a working boom of an excavator so as to rotate the working support frame, and at the same time, is configured to support the working frame while adjusting the height of the slope using the elevation cylinders when the working frame is supported on an inclined work surface. Therefore, the present invention enables a drilling bit provided in the working support frame to stably drill a structure regardless of the inclination of a work surface to be drilled, and can thus significantly improve the efficiency of a drilling operation.Type: GrantFiled: February 26, 2016Date of Patent: December 15, 2020Inventor: Jae-Mun Park
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Patent number: 10240314Abstract: An apparatus intended for incorporation as a module within ground improvement pokers such as those already patented (U.S. Pat. Nos. 6,554,543 and 8,419,316) in order to enhance the field performance of those hydrodynamic compactors by either improving their ground penetration capability, and/or, maintaining or recovering the permeability of their outer seepage filtration element; involving a method which can be activated remotely at the operator's discretion, while those parent devices are at depth within the earth. This apparatus and method may have application in water well installations and reviving flow in oil wells.Type: GrantFiled: April 19, 2018Date of Patent: March 26, 2019Inventor: William Eugene Hodge
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Patent number: 9394664Abstract: A hydraulic breaker hammer casing assembly for converting a hydraulic breaker hammer to a pile driving apparatus for driving piles into the ground. A hydraulic breaker hammer is immovably retained in a support housing. The hydraulic breaker hammer is fitted with a blunt working implement for transmitting blows to a drive cap supported on top of a pile. A pile guiding assembly is secured at an open bottom end of the support housing for guiding, in axial alignment with the working implement, the pile being driven in the ground. The casing assembly protects the hydraulic breaker hammer secured therein and provides access thereto as well as displaceable connection to a boom of a pile driving rig.Type: GrantFiled: March 12, 2013Date of Patent: July 19, 2016Inventor: Alain Desmeules
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Publication number: 20150000947Abstract: An impact mechanism device for a hand power tool comprises at least one impact mechanism including at least one driven cylinder and at least one piston driven in an axial direction by the at least one driven cylinder via a cam mechanism, and at least one planetary gearing configured to drive the at least one driven cylinder and the at least one piston. The at least one piston is positioned at least partially inside the at least one driven cylinder.Type: ApplicationFiled: June 26, 2014Publication date: January 1, 2015Inventors: Tobias Herr, Steffen Tiede, Benjamin Nikolas Fischle, Hardy Schmid, Gerd Schlesak, Selim Mustafa
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Patent number: 8302707Abstract: A DHD hammer that can exhaust working air volumes partially through a proximal end of the DHD hammer's actuator assembly includes a drive chamber, a return chamber, and a backhead that includes exhaust ports. Working air volumes from the drive chamber are exhausted through the backhead while working air volumes from the drive chamber are exhausted primarily through a drill bit.Type: GrantFiled: January 28, 2009Date of Patent: November 6, 2012Assignee: Center Rock Inc.Inventor: Leland Lyon
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Patent number: 8240682Abstract: According to the present invention, there is provided a jackhammer trolley comprising a mainframe member with a clamp member at the bottom end and an extension bracket portion at the top end, a base frame member removably attached to the mainframe member by pivoting joints with at least one wheel member removably attached to its bottom, a handle member having a hand lever attached to said top end, and at least one vibration dampener fixed to said top or bottom end of the mainframe member.Type: GrantFiled: September 4, 2009Date of Patent: August 14, 2012Inventor: Rory Kennard
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Publication number: 20100187017Abstract: A DHD hammer that can exhaust working air volumes partially through a proximal end of the DHD hammer's actuator assembly includes a drive chamber, a return chamber, and a backhead that includes exhaust ports. Working air volumes from the drive chamber are exhausted through the backhead while working air volumes from the drive chamber are exhausted primarily through a drill bit.Type: ApplicationFiled: January 28, 2009Publication date: July 29, 2010Applicant: CENTER ROCK, INC.Inventor: Leland H. Lyon
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Patent number: 7182149Abstract: A pneumatic wrench includes a pneumatic motor, a striking portion, and a drive shaft. The striking portion includes a support seat, a first pin, a second pin, a first hammer, and a second hammer. Thus, the locking strip of the first hammer and the locking strip of the second hammer increase the thickness of the first hammer and the second hammer respectively to reinforce the structural strength of the first hammer and the second hammer, thereby preventing the first hammer and the second hammer from being broken due to vibration so as to increase the lifetime of the first hammer and the second hammer.Type: GrantFiled: August 11, 2004Date of Patent: February 27, 2007Inventor: Hsin Ho Chang
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Patent number: 4960344Abstract: A locking mechanism for fixing an outer part (5) on an inner part (4) having locking members (8) which are guided in apertures (7) of the outer part so as to be radially movable in a limited way. In the locking position, these locking members (8) are supported radially outwardly on a locking ring (10). A control ring (16) retains the locking ring in the open position. For this purpose, the control ring (16) is displaced eccentrically and is supported on a stop (19) associated with the outer part (5). By inserting the inner part (4), the control ring (16) is aligned coaxially by the control members (8) so that a spring (12) loading the locking ring (10) can act to move the control ring (16) across the stop (19) so that the locking position is achieved.Type: GrantFiled: May 17, 1989Date of Patent: October 2, 1990Assignee: Jean Walterscheid GmbHInventors: Hubert Geisthoff, Klaus Kampf
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Patent number: 4749050Abstract: An impact tool having an air-operated hammer for impacting against an anvil in the body of the tool to cause the tool to tunnel through the ground and having passages and conduits opening to the front tip of the tool to pass water to lubricate the tool to ease the passage of the tool through the soil during the propulsion of the tool, the front tip further having a headpiece through which the passages open to the tool exterior surface.Type: GrantFiled: February 13, 1987Date of Patent: June 7, 1988Inventor: Lester L. Ritter
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Patent number: 4645016Abstract: A pile driver is described wherein a piston within an internal combustion engine is rigidly coupled to the pile to be driven. The engine is resiliently coupled to the pile so as to move with the pile. Control circuitry modifies the frequency of operation of the piston so as to make the impulses created thereby synchronous with reflected impulses within the pile.Type: GrantFiled: May 6, 1985Date of Patent: February 24, 1987Assignee: University Patents, Inc.Inventor: Frank S. Barnes
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Patent number: 4505340Abstract: A vibration or reciprocating hydraulically driven impact tool for breaking up paving, compacting soil, or similar construction purposes. The tool employs a piston situated in a housing and configured to form (in cooperation with the housing) three chambers. One of the chambers is filled with a compressed gas which acts as a shock absorber/spring, with the other two chambers serving to drive adjacent flanges of the piston in opposite directions to provide reciprocating action. The device is constructed so that when no mechanical force is applied to the handle, the piston is at rest in its forward position (being urged there by the compressed gas), with the hydraulic forces acting upon the piston shoulders being balanced. When the handle is pushed forward, the hydraulic system is altered so that unbalanced forces act on the piston flanges, causing the piston to start moving. Thereafter, a hydraulic valve system provides the desired reciprocating motion of the piston.Type: GrantFiled: June 3, 1982Date of Patent: March 19, 1985Inventors: Ivan A. Yantsen, Kenes K. Bekishev, Orest G. Savchak, Alexandr B. Klok, Tolgat M. Zhanabaev, Mechislav-Valentinas K. Pakshtas, Boris N. Glotov, Garold K. Fink, Alexei F. Timkin, Nikolai I. Zorin, Leonid M. Bobylev
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Patent number: 4483402Abstract: A paving breaker for the construction industry of the type having a vibrating moil point or tool steel impacted by a pneumatically reciprocated piston including a double walled cylinder slidably receiving the piston designed so that the space between the inner and outer walls of the cylinder forms a passageway for delivery of piston return air to the lower cylinder chamber and the space also forms an accumulator for air compressed by the piston during the lower part of its power stroke. In one embodiment an outer cylinder sleeve is mounted on an elastomeric member surrounding an inner cylinder sleeve, and is free to reciprocate a limited distance in the housing to partly balance the reaction forces of the piston. This double walled cylinder is surrounded by rectangular polyurethane covers that form an air exhaust space around the cylinder so that exhaust air assists in cooling the cylinder.Type: GrantFiled: December 1, 1981Date of Patent: November 20, 1984Assignee: Thor Power Tool CompanyInventor: William Vonhoff, Jr.
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Patent number: 4479551Abstract: A linear actuator includes a ram and a piston separated by a column of hydraulic fluid in a housing. Upward movement of the ram in the housing first seals a finite quantity of hydraulic fluid in the housing cavity. Continued upward ram movement then causes the piston, and hydraulic fluid beneath it, to move upwardly into a sealed gas chamber to compress a gas and create a source of potential energy. Release of the force moving the ram upwardly permits the compressed gas above the piston to expel the hydraulic fluid from the chamber against the ram thereby converting the potential energy in the compressed gas into kinetic energy in the ram. The hydraulic fluid bears directly against the ram to provide the working stroke of the impact device without the effect of metal fatigue from direct contact between the piston and ram.Type: GrantFiled: November 27, 1981Date of Patent: October 30, 1984Assignee: Hughes Tool CompanyInventor: Edgar J. Justus
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Patent number: 4144941Abstract: A hole-driving tool having an air-operated hammer for impacting against an anvil in the body of the tool to cause the tool to tunnel through the ground, wherein the direction of travel is controlled by providing a variable mass distribution over the hammer and anvil combination, and controlling the relative impact position of the hammer against the anvil.Type: GrantFiled: September 30, 1977Date of Patent: March 20, 1979Inventor: Lester L. Ritter
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Patent number: 4102408Abstract: A gas cushion impact cap, used in connection with pile driving, is connected to an external pressure chamber holding an additional volume of gas, whereby there will be no appreciable change in the gas pressure during the impact. The gas pressure is primarily determined by varying the volume of a liquid contained in the pressure chamber, in response to the resistance met by the pile while penetrating the ground. The impact cap may be pre-loaded during an upwards movement, the pre-load being released upon the impact, to throw the hammer upwards again.Type: GrantFiled: February 22, 1977Date of Patent: July 25, 1978Inventor: Birger Ludvigson
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Patent number: 4075858Abstract: An apparatus and a method for driving piles onshore or offshore, including driving a tubular pile within a submersed tubular jacket leg of an offshore structure and field disassembly.The apparatus hammer includes a displaceable ram structure, mounted within a pressurized air-filled housing, which is reciprocated by a pressurized working liquid against a pile-engaging anvil structure, which is in dry contact with a pile inserted within one end of the pressurized housing. The ram structure compresses air within the housing near the end of its firing stroke to preload the anvil structure for better energy transfer to the pile. The ram structure also compresses the air within the housing near the end of its loading stroke to slow the ram structure and permit full charging of working liquid accumulators, which discharge during the firing stroke to maintain working liquid pressure and prevent cavitation.Type: GrantFiled: May 17, 1976Date of Patent: February 28, 1978Inventor: Leonard L. Frederick
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Patent number: 3939922Abstract: A hydraulic hammer assembly is disclosed which comprises a stationary piston suspended within a tubular frame or casing and a cylinder locked inside a massive ram within the casing. The cylinder forms a differential hydraulic assembly with the piston and moves up and down along the piston. The cylinder is maintained locked to the ram by the pressure of the hydraulic fluid; and the piston, which is formed of two members, is held in assembly by a continuous hydraulic bias with a special hydraulic balancing arrangement which compensates for the pressure switching in the cylinder to which one portion of the piston assembly is exposed.Type: GrantFiled: November 13, 1974Date of Patent: February 24, 1976Assignee: Raymond International, Inc.Inventor: William J. Swenson