Patents by Inventor John M. Parks
John M. Parks 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: 5003154Abstract: Apparatus and method to reduce splatter and allow better semi-automatic welding in short circuiting arc welding of the type using a single D.C. power supply for causing a welding current to pass through a welding wire extending variable distances from a holder and between the welding wire and a workpiece at a molten pool on the workpiece. The welding current flows in response to an arc voltage while the welding wire is fed from the holder toward the workpiece whereby the welding wire is subjected to a succession of welding cycles each of which include an arcing condition during which the wire is spaced from the pool and a short circuit condition during which a molten metal ball formed on the end of the wire contacts the metal pool and then transfers from the wire to the workpieced by a necking action. A preselected, constant amount of energy is applied to the wire during the arcing condition for each welding cycle.Type: GrantFiled: July 3, 1989Date of Patent: March 26, 1991Assignee: The Lincoln Electric CompanyInventors: John M Parks, Elliott K. Stava
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Patent number: 4954691Abstract: A method and device for controlling a power supply for arc welding in a manner to reduce spatter when the power supply is employed for depositing metal from a welding wire or electrode onto a workpiece by the short circuiting transfer mode wherein a welding current causes the welding wire to alternate between a short circuit condition and an arc condition with metal transfer occurring during a short circuit condition. This method and device includes the concept of shifting the welding current to a background current value in response to a short circuit condition, holding the welding current generally at the background current level for a preselected time, then allowing the welding current to reach the normal unimpeded current level, and causing the holding step to be terminated before the selected time in response to a detected arc condition.Type: GrantFiled: April 24, 1989Date of Patent: September 4, 1990Assignee: The Lincoln Electric CompanyInventors: John M. Parks, Elliott K. Stava
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Patent number: 4897523Abstract: In a short circuiting arc welding apparatus and method wherein a continuously fed welding wire alternates between an arcing condition during which the wire is spaced from the molten pool of the workpiece and a short circuit condition during which the melted metal on the end of the welding wire is in contact with the molten metal pool and thereafter transfers to the workpiece by a necking action breaking the melted metal from the wire, there is provided an improvement including providing a first high inductance current control circuit for continuously directing a low level, arc sustaining, background current between the welding wire and the workpiece and providing a second current control circuit for controlling current flow during the arcing condition of the process.Type: GrantFiled: February 10, 1989Date of Patent: January 30, 1990Assignee: The Lincoln Electric CompanyInventors: John M. Parks, Elliott K. Stava
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Patent number: 4866247Abstract: Apparatus and method to reduce spatter and allow better semi-automatic welding in short circuiting arc welding of the type using a single D.C. power supply for causing a welding current to pass through a welding wire extending variable distances from a holder and between the welding wire and a workpiece at a molten metal pool on the workpiece. The welding current flows in response to an arc voltage while the welding wire is fed from the holder toward the workpiece whereby the welding wire is subjected to a succession of welding cycles each of which include an arcing condition during which the wire is spaced from the pool and a short circuit condition during which a molten metal ball formed on the end of the wire contacts the metal pool and then transfers from the wire to the workpiece by a necking action.Type: GrantFiled: November 14, 1988Date of Patent: September 12, 1989Assignee: The Lincoln Electric CompanyInventors: John M. Parks, Elliott K. Stava
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Patent number: 4835360Abstract: A method and device for controlling a power supply for arc welding in a manner to reduce spatter when the power supply is employed for depositing metal from a welding wire or electrode onto a workpiece by the short circuiting transfer mode wherein a welding current causes the welding wire to alternate between a short circuit condition and an arc condition with metal transfer occurring during a short circuit condition. This method and device includes the concept of shifting the welding current to a background current value in response to a short circuit condition, holding the welding current generally at the background current level for a preselected time, then allowing the welding current to reach the normal unimpeded current level, and causing the holding step to be terminated before the selected time in response to a detected arc condition.Type: GrantFiled: October 7, 1987Date of Patent: May 30, 1989Assignee: The Lincoln Electric CompanyInventors: John M. Parks, Elliott K. Stava
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Patent number: 4717807Abstract: A method and device for controlling a power supply for arc welding in a manner to reduce spatter when the power supply is employed for depositing metal from a welding wire or electrode onto a workpiece by the short circuiting transfer mode wherein a welding current causes the welding wire to alternate between a short circuit condition and an arc condition with metal transfer occurring during a short circuit condition. This method and device includes the concept of shifting the welding current to a background current value in response to a short circuit condition, holding the welding current generally at the background current level for a preselected time, then allowing the welding current to reach the normal unimpeded current level, and causing the holding step to be terminated before the selected time in response to a detected arc condition.Type: GrantFiled: December 11, 1986Date of Patent: January 5, 1988Assignee: The Lincoln Electric CompanyInventors: John M. Parks, Elliott K. Stava
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Patent number: 4717202Abstract: The present invention relates to an outdoor courtesy bench and is specifically concerned with providing such a bench which is constructed of a lightweight easily handled material for visibly displaying a plurality of advertising panels, both on the front and back of the bench. Prior art devices have been constructed of heavy, high maintenance materials which in use are subject to the accumulation of debris and the like therebeneath and which are subject to the collection of rain water and the like on the seat portion thereof and have only been adaptable to display a single advertising panel on the frontside thereof. The present invention overcomes these deficiencies by providing an outdoor courtesy bench of three-piece modular construction of a lightweight material having a hollow base portion to which discreet weight members can be added for increased weight and stability of the bench after positioning at a selected bench site.Type: GrantFiled: October 6, 1986Date of Patent: January 5, 1988Assignee: The Batchelder CompanyInventors: Joseph H. Batchelder, III, John M. Parks
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Patent number: 4542924Abstract: A deflectable unitary latch (10) of plastic material is disclosed for securing a pivoting window (12) or the like to a frame (14) having a striker member (28) thereon. The latch (10) has a base (30), a handle (32) and a spring-like arm (34) extending from the base (30), with the arm (34) having a proximal hinge portion (36), a support strut (38), a latch portion (40) and a press bar (42). The hinge portion (36) and the support strut (38) are constructed to allow the arm (34) to be deflected primarily about the hinge portion (36) as the press bar (42) is urged toward the handle (32) for release of the latch.Type: GrantFiled: June 27, 1983Date of Patent: September 24, 1985Assignee: Caterpillar Tractor Co.Inventors: William J. Brown, John M. Parks
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Patent number: D245503Type: GrantFiled: April 12, 1976Date of Patent: August 23, 1977Assignee: Caterpillar Tractor Co.Inventors: Stanley B. Adams, John M. Parks, James M. Reisel
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Patent number: D248475Type: GrantFiled: July 15, 1977Date of Patent: July 11, 1978Assignee: Caterpillar Tractor Co.Inventors: John M. Parks, Barry L. Ahrens, William J. Brown, John Molnar
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Patent number: D270350Type: GrantFiled: October 14, 1980Date of Patent: August 30, 1983Assignee: Caterpillar Tractor Co.Inventors: Lawrence F. Clancy, John M. Parks, Eugene M. Poplawski
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Patent number: D271966Type: GrantFiled: October 14, 1980Date of Patent: December 27, 1983Assignee: Caterpillar Tractor Co.Inventors: William J. Brown, Ramon C. Kohler, John M. Parks
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Patent number: D302276Type: GrantFiled: October 15, 1985Date of Patent: July 18, 1989Assignee: Caterpillar Inc.Inventors: Robert W. Briggs, John M. Parks
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Patent number: D314388Type: GrantFiled: January 25, 1988Date of Patent: February 5, 1991Assignee: Caterpillar Inc.Inventors: Thomas D. Brewer, Robert R. Farris, John M. Parks, Gerald P. Simmons
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Patent number: D753916Type: GrantFiled: August 22, 2014Date of Patent: April 19, 2016Inventor: John M. Park