Patents by Inventor Alois Wimmer
Alois Wimmer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7963054Abstract: A coupling apparatus having a device for automatic connection of power lines, in particular of hydraulic lines, for the attachment of working tools to a tool mount of a excavator boom by means of a quick-action coupling, wherein, in order to connect the tool mount to the working tool, the quick-action coupling has a hook connection and a blocking unit with a movable bolt element which is operated by an actuating unit. Supply connecting pieces are fixed to the tool mount, and the corresponding power take-off connecting pieces of the working tool are fixed on a mount, which is mounted on the working tool such that it can move between a moved-forward position and a drawn-back position, wherein the mount has a driver piece for engagement with an operating element which is coupled to the movable bolt element.Type: GrantFiled: March 20, 2009Date of Patent: June 21, 2011Assignee: Wimmer Hartstahl GmbH & Co. KGInventors: Alois Wimmer, Erich Greisberger
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Patent number: 7735576Abstract: In a device for guiding and tensioning supply lines for working tools movable along a straight guide, e.g. supply lines of a hydraulic hammer drill on an advance mounting, the advance of the working tool is implemented by means of a revolving transport chain driven by a sprocket wheel, and the supply line(s) are guided between the connections on the fixed guide and the connections on the working tool by a tension roller which causes a deflection about 180° and is movable in advance direction downstream the working tool conjointly therewith in the same direction but at half the advance speed, wherein the tension roller is slidably guided on the guide for the working tool transversely to its rotation axis, and wherein a pinion engages the transport chain for driving the movement of the tension roller and interacts with a fixed chain on the opposite side.Type: GrantFiled: October 28, 2005Date of Patent: June 15, 2010Inventor: Alois Wimmer
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Publication number: 20090255151Abstract: A coupling apparatus having a device for automatic connection of power lines, in particular of hydraulic lines, for the attachment of working tools to a tool mount of a excavator boom by means of a quick-action coupling, wherein, in order to connect the tool mount to the working tool, the quick-action coupling has a hook connection and a blocking unit with a movable bolt element which is operated by an actuating unit. Supply connecting pieces are fixed to the tool mount, and the corresponding power take-off connecting pieces of the working tool are fixed on a mount, which is mounted on the working tool such that it can move between a moved-forward position and a drawn-back position, wherein the mount has a driver piece for engagement with an operating element which is coupled to the movable bolt element.Type: ApplicationFiled: March 20, 2009Publication date: October 15, 2009Applicant: WIMMER HARTSTAHL GMBH & CO. KGInventors: Alois Wimmer, Erich Greisberger
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Publication number: 20090223096Abstract: A quick-action coupling for coupling a tool to a bracket of a construction machine includes complementary coupling elements arranged on each of the tool and on the end of the bracket. The coupling elements can be used to connect, for example, hydraulic lines to drive equipment attached to the tool. The tool includes an identification carrier for identifying the tool, and the bracket includes one or several detectors, which are connected with a controller of the hydraulics of the construction machine. Projections, pins or the like, which are arranged on the tool or on the coupling element in a grid pattern, engage with switches, sensors or the like mounted on the bracket and arranged in an identical grid pattern. The tool is identified through the pattern of the projections or pins on the tool or on the coupling element attached to the tool.Type: ApplicationFiled: March 15, 2007Publication date: September 10, 2009Inventor: Alois Wimmer
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Publication number: 20090134261Abstract: In a device for guiding and tensioning supply lines for working tools movable along a straight guide, e.g. supply lines of a hydraulic hammer drill on an advance mounting, the advance of the working tool is implemented by means of a revolving transport chain driven by a sprocket wheel, and the supply line(s) are guided between the connections on the fixed guide and the connections on the working tool by a tension roller which causes a deflection about 180° and is movable in advance direction downstream the working tool conjointly therewith in the same direction but at half the advance speed, wherein the tension roller is slidably guided on the guide for the working tool transversely to its rotation axis, and wherein a pinion engages the transport chain for driving the movement of the tension roller and interacts with a fixed chain on the opposite side.Type: ApplicationFiled: October 28, 2005Publication date: May 28, 2009Inventor: Alois Wimmer
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Patent number: 7198451Abstract: The subject of the patent is a quick-change coupling for attaching work tools to an excavator boom, in which a respective coupling body part (1, 2) is disposed on the work tool and on the excavator boom, the two coupling body parts being mutually securable by a hook connection (3) and a wedge lock (4) having mutual bearing surfaces (5), and at least one coupling plate (14, 14?) being respectively provided on the work tool, on both sides of the longitudinal center plane and parallel to the latter, which coupling plates have, congruent with each other, the receiving recesses both of the hook connection (3) and of the wedge connection (4).Type: GrantFiled: March 31, 2005Date of Patent: April 3, 2007Inventor: Alois Wimmer
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Publication number: 20050232742Abstract: The subject of the patent is a quick-change coupling for attaching work tools to an excavator boom, in which a respective coupling body part (1, 2) is disposed on the work tool and on the excavator boom, the two coupling body parts being mutually securable by a hook connection (3) and a wedge lock (4) having mutual bearing surfaces (5), and at least one coupling plate (14, 14?) being respectively provided on the work tool, on both sides of the longitudinal center plane and parallel to the latter, which coupling plates have, congruent with each other, the receiving recesses both of the hook connection (3) and of the wedge connection (4).Type: ApplicationFiled: March 31, 2005Publication date: October 20, 2005Inventor: Alois Wimmer
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Publication number: 20050208810Abstract: An arrangement for connecting energy lines, in particular pressure lines, such as, for example, hydraulic lines, of tools to be supplied with energy, in particular pressure-actuated tools to pressure supply lines, it being possible for the tools to be secured to the tool carrier in a fixed position in a locked manner, and at least one respective coupling part being provided on the tool and on the tool carrier, which coupling parts are located coaxially opposite one another in the mutually secured state, and of which coupling parts one coupling part engages in the opposite mating coupling part in the coupled state.Type: ApplicationFiled: April 7, 2005Publication date: September 22, 2005Inventors: Alois Wimmer, Erich Greisberger
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Patent number: 5727442Abstract: The invention relates to a safety arrangement on hydraulic piston-cylinder units. In particular for monitoring locking cylinders, e.g., of operating tools mounted on a grab bucket boom. A sensor for monitoring the piston position is provided on the piston-cylinder unit and is coupled electrically to a monitoring circuit for triggering an alarm arrangement if the piston is incorrectly positioned. The sensor (3) is coupled to an electrically actuatable locking valve (2) coupled in the monitoring circuit (9) for controlling the hydraulic piston-cylinder unit (1).Type: GrantFiled: November 2, 1995Date of Patent: March 17, 1998Assignee: Wimmer Hartstahl Ges.mbH & Co. KGInventor: Alois Wimmer
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Patent number: 5704560Abstract: A concrete crusher has cutting shears with a first cutting arm forming an additional arm on one of the jaws of the breaker tongs and a second cutting arm rigidly joined to the frame of the concrete crusher. An hydraulic piston/cylinder unit drives the jaws such that the first cutting arm is in an open position relative to the second cutting arm when the jaws are in an open position.Type: GrantFiled: July 9, 1996Date of Patent: January 6, 1998Assignee: Wimmer Hartstahl GesmbH & Co. KGInventor: Alois Wimmer
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Patent number: 5188158Abstract: The exchangeable wear-resistant element serves to protect structural parts against abrasive wear. This exchangeable wear-resistant element comprises a base part formed of a tough material and a support part formed of a material possessing high wear resistance. The base part and the support part are interconnected at confronting faces or surfaces and the base part is provided with an attachment element.Type: GrantFiled: October 16, 1991Date of Patent: February 23, 1993Assignee: Bohler Ybbstalwerke GmbHInventors: Manfred Gstettner, Alois Wimmer
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Patent number: 5111888Abstract: Mounting for a swingable suspension of a cutter hammer to a boom or the like which is tiltable about a horizontal axis, with the cutter hammer being floatingly suspended and swingable transversely to the tilting plane about an axis which extends in the tilting plane of the boom, wherein the cutter hammer (2) is locked in the desired swinging position relative to the boom (1) by a form-fitting coupling (6, 7, 8, 9).Type: GrantFiled: January 26, 1990Date of Patent: May 12, 1992Inventor: Alois Wimmer