Patents by Inventor Phillip A. Bojda
Phillip A. Bojda 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: 7000966Abstract: A pick-and-place tool releasably retains a part during a pick-and-place operation by an automated device. The pick-and-place tool includes a front structure having a first bore disposed therein for receiving a shaft extending from the part. A plurality of locking mechanisms is disposed within the front structure. The plurality of locking mechanisms are evenly spaced around the inner surface and are in fluid communication with a common fluid source. Each locking mechanism in the plurality of locking mechanisms includes a bearing disposed proximate an aperture in the inner surface, and a piston in mechanical communication with the bearing. Movement of the piston in response to a fluid pressure at the common fluid source forces the bearing to extend through the aperture and retain the shaft within the first bore. In one aspect, a resilient member is disposed between the front structure and a tool holder coupled to the automated device.Type: GrantFiled: September 24, 2002Date of Patent: February 21, 2006Assignee: General Motors CorporationInventors: Mark A. Kramarczyk, Gary Lee Jones, Yhu-Tin Lin, Phillip A. Bojda
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Patent number: 6877729Abstract: A reconfigurable fixture for workpieces is disclosed. It utilizes a flat surface magnetic chuck with modular workpiece supporting, locating and clamping elements that are carefully located on it and held by magnetic attraction to it. These elements are precisely located to hold the workpiece in spaced relation to the chuck surface. Some locating elements are mechanically fixed to the chuck for securing the workpiece from transverse movement on the chuck surface. Preferably, each of the supporting, locating and clamping members are fixed to separate steel bases for magnetic attraction to the chuck. Each base may also carry its own hydraulic actuator for height adjustment of a support element or for height adjustment and closure of a clamping element. These modular elements have locating slots or grooves or the like so that they can be selected from a storage magazine and located on a chuck by numerically controlled mechanisms.Type: GrantFiled: September 4, 2003Date of Patent: April 12, 2005Assignee: General Motors CorporationInventors: Yhu-Tin Lin, Mark A. Kramarczyk, Gary Lee Jones, Andrew Leslie Bartos, Phillip A. Bojda, Chi-Hung Shen, John Stilianos Agapiou
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Publication number: 20040080087Abstract: A reconfigurable fixture for workpieces is disclosed. It utilizes a flat surface magnetic chuck with modular workpiece supporting, locating and clamping elements that are carefully located on it and held by magnetic attraction to it. These elements are precisely located to hold the workpiece in spaced relation to the chuck surface. Some locating elements are mechanically fixed to the chuck for securing the workpiece from transverse movement on the chuck surface. Preferably, each of the supporting, locating and clamping members are fixed to separate steel bases for magnetic attraction to the chuck. Each base may also carry its own hydraulic actuator for height adjustment of a support element or for height adjustment and closure of a clamping element. These modular elements have locating slots or grooves or the like so that they can be selected from a storage magazine and located on a chuck by numerically controlled mechanisms.Type: ApplicationFiled: September 4, 2003Publication date: April 29, 2004Inventors: Yhu-Tin Lin, Mark A. Kramarczyk, Gary Lee Jones, Andrew Leslie Bartos, Phillip A. Bojda, Chi-Hung Shen, John Stilianos Agapiou
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Patent number: 6712348Abstract: An adapter for picking up and placing a fixture element on a fixture body using a controlled tool handling device having a tool translating and rotating spindle. The spindle has a tool receiving end and an axis of rotation. The adapter receives a cylindrical post member of a fixture element on a fixture body. The adapter has a first end having a receptacle for receiving the end of the spindle. The second end of the adapter is displaced from the first end and includes a cylindrical socket formed on the end. The socket is co-axial with the spindle and receives the cylindrical post member of the fixture element. A fluid passage is formed in the adapter from the receptacle to the cylindrical socket. The cylindrical socket has an upstream end and a down stream end. A piston is disposed in the upstream end of the socket. The piston is moveable longitudinally within the socket in response to fluid pressure delivered from the spindle through the fluid passage.Type: GrantFiled: March 18, 2003Date of Patent: March 30, 2004Assignee: General Motors CorporationInventors: Mark A. Kramarczyk, Gary Lee Jones, Andrew Leslie Bartos, Yhu-Tin Lin, Phillip A. Bojda
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Publication number: 20040056495Abstract: A pick-and-place tool releasably retains a part during a pick-and-place operation by an automated device. The pick-and-place tool includes a front structure having a first bore disposed therein for receiving a shaft extending from the part. A plurality of locking mechanisms is disposed within the front structure. The plurality of locking mechanisms are evenly spaced around the inner surface and are in fluid communication with a common fluid source. Each locking mechanism in the plurality of locking mechanisms includes a bearing disposed proximate a hole in the inner surface, and a piston in mechanical communication with the bearing. Movement of the piston in response to a fluid pressure at the common fluid source forces the bearing to extend through the aperture and retain the shaft within the first bore. In one aspect, a resilient member is disposed between the front structure and a tool holder coupled to the automated device.Type: ApplicationFiled: September 24, 2002Publication date: March 25, 2004Inventors: Mark A. Kramarczyk, Gary Lee Jones, Yhu-Tin Lin, Phillip A. Bojda
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Publication number: 20040056401Abstract: An adapter for picking up and placing a fixture element on a fixture body using a controlled tool handling device having a tool translating and rotating spindle. The spindle has a tool receiving end and an axis of rotation. The adapter receives a cylindrical post member of a fixture element on a fixture body. The adapter has a first end having a receptacle for receiving the end of the spindle. The second end of the adapter is displaced from the first end and includes a cylindrical socket formed on the end. The socket is co-axial with the spindle and receives the cylindrical post member of the fixture element. A fluid passage is formed in the adapter from the receptacle to the cylindrical socket. The cylindrical socket has an upstream end and a down stream end. A piston is disposed in the upstream end of the socket. The piston is moveable longitudinally within the socket in response to fluid pressure delivered from the spindle through the fluid passage.Type: ApplicationFiled: March 18, 2003Publication date: March 25, 2004Inventors: Mark A. Kramarczyk, Gary Lee Jones, Andrew Leslie Bartos, Yhu-Tin Lin, Phillip A. Bojda
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Patent number: 6644637Abstract: A reconfigurable fixture for workpieces is disclosed. It utilizes a flat surface magnetic chuck with modular workpiece supporting, locating and clamping elements that are carefully located on it and held by magnetic attraction to it. These elements are precisely located to hold the workpiece in spaced relation to the chuck surface. Some locating elements are mechanically fixed to the chuck for securing the workpiece from transverse movement on the chuck surface. Preferably, each of the supporting, locating and clamping members are fixed to separate steel bases for magnetic attraction to the chuck. Each base may also carry its own hydraulic actuator for height adjustment of a support element or for height adjustment and closure of a clamping element. These modular elements can be selected from a storage magazine and located on a chuck by numerically controlled mechanisms.Type: GrantFiled: September 13, 2002Date of Patent: November 11, 2003Assignee: General Motors CorporationInventors: Chi-Hung Shen, Yhu-Tin Lin, John Stilianos Agapiou, Phillip A. Bojda, Gary Lee Jones, John P. Spicer