Patents by Inventor Arthur W. Harrison
Arthur W. Harrison 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: 6565304Abstract: An apparatus for assisting the loading of a plurality of wafer boats into a multi-level wafer boat loading system (1) includes a vertical elevator mechanism (10) attached to the wafer boat loading system (1). A vertically movable horizontal wafer boat platform (18B) is attached to a vertically movable carriage (31) included in the elevator mechanism and vertically movable along a linear track (30) therein. A control system (25) associated with the vertical elevator mechanism includes a processor for executing a stored program which stores information representing a plurality of elevation levels the plurality of cantilever paddles (5), respectively, and which responds to a selection signal corresponding to manual selection of one of the elevator levels to control a drive mechanism (22,27) which moves the wafer boat support platform (18B) from an initial position to the selected elevator level.Type: GrantFiled: May 16, 2001Date of Patent: May 20, 2003Assignee: Amtech Systems, IncorporatedInventors: John M. Martin, Arthur W. Harrison, Allen D. Edwards
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Patent number: 6537010Abstract: An apparatus for automatically and simultaneously loading/unloading a plurality of wafer boats (24) onto/from a cantilever paddle includes a cantilever paddle (47-1) and a carriage (42-1) supporting the cantilever paddle First and second vertical translation mechanisms (34A,B) each include a stationary part (62,63) and a vertically moveable support (61). First and second horizontal translation mechanisms (50A,B) each have a base (86) supported by one of the vertically moveable supports and a horizontally moveable arm (51) supported by the base (86). A horizontal boat support assembly (102) supports the loaded wafer boats and has an end supported by a first horizontally moveable arm (51A) and another end supported by a second horizontally moveable arm (51B).Type: GrantFiled: March 19, 2001Date of Patent: March 25, 2003Assignee: Amtech Systems, IncorporatedInventors: John M. Martin, Arthur W. Harrison, Allen D. Edwards
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Publication number: 20020154970Abstract: An apparatus for assisting the loading of a plurality of wafer boats into a multi-level wafer boat loading system (1) includes a vertical elevator mechanism (10) attached to the wafer boat loading system (1). A vertically movable horizontal wafer boat platform (181B) is attached to a vertically movable carriage (31) included in the elevator mechanism and vertically movable along a linear track (30 therein. A control system (25) associated with the vertical elevator mechanism includes a processor for executing a stored program which stores information representing a plurality of elevation levels the plurality of cantilever paddles (5), respectively, and which responds to a selection signal corresponding to manual selection of one of the elevator levels to control a drive mechanism (22,27) which moves the wafer boat support platform (18B) from an initial position to the selected elevator level.Type: ApplicationFiled: May 16, 2001Publication date: October 24, 2002Applicant: Amtech Systems, Inc.Inventors: John M. Martin, Arthur W. Harrison, Allen D. Edwards
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Patent number: 6352399Abstract: An apparatus for automatically and simultaneously loading a single long wafer boat or a plurality of wafer boats onto a cantilever paddle includes a stationary first track aligned with a first opening of a diffusion furnace and a first carriage moveable on the first track. The first carriage supports a cantilever paddle. A first vertical translation mechanism includes a first stationary part and a first vertically moveable support. A second vertical translation mechanism includes a second stationary part and a second vertically moveable support. A first horizontal translation mechanism includes a first base supported by the first vertically moveable support and a first horizontally moveable arm supported by the first base. A second horizontal translation mechanism includes a second base supported by the second vertically moveable support and a second horizontally moveable arm supported by the second base.Type: GrantFiled: July 7, 1999Date of Patent: March 5, 2002Assignee: Amtech Systems, Inc.Inventors: John M. Martin, Arthur W. Harrison
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Publication number: 20010041118Abstract: An apparatus for automatically and simultaneously loading/unloading a plurality of wafer boats (24) onto/from a cantilever paddle includes a cantilever paddle (47-1) and a carriage (42-1) supporting the cantilever paddle First and second vertical translation mechanisms (34A,B) each include a stationary part (62,63) and a vertically moveable support (61). First and second horizontal translation mechanisms (50A,B) each have a base (86) supported by one of the vertically moveable supports and a horizontally moveable arm (51) supported by the base (86). A horizontal boat support assembly (102) supports the loaded wafer boats and has an end supported by a first horizontally moveable arm (51A) and another end supported by a second horizontally moveable arm (51B).Type: ApplicationFiled: March 19, 2001Publication date: November 15, 2001Inventors: John M. Martin, Arthur W. Harrison, Allen D. Edwards
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Patent number: 5888048Abstract: A system for automatic loading of wafer boats onto a cantilever paddle for insertion of the wafer boats into a furnace tube includes an end effector carriage moving on a track and supporting an end effector having spaced, parallel pads to engage opposed outer side portions of a wafer boat. The end effector receives a wafer boat from a robotic arm of an elevator. The robotic arm moves transversely relative to the track to position the wafer boat over the track on which the paddle carriage moves. The end effector carriage moves the end effector pads under the wafer boat, lifts it from a pair of elevator tines, moves the wafer boat over a desired part of the paddle, and lowers the wafer boat onto the paddle. The end effector carriage then returns the end effector to an initial location.Type: GrantFiled: June 12, 1998Date of Patent: March 30, 1999Assignee: Amtech Systems, Inc.Inventors: John M. Martin, Arthur W. Harrison
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Patent number: 5765982Abstract: A system for automatic loading of wafer boats onto a cantilever paddle for insertion of the wafer boats into a furnace tube includes an end effector carriage moving on a track and supporting an end effector having spaced, parallel pads to engage opposed outer side portions of a wafer boat. The end effector receives a wafer boat from a robotic arm of an elevator. The robotic arm moves transversely relative to the track to position the wafer boat over the track on which the paddle carriage moves. The end effector carriage moves the end effector pads under the wafer boat, lifts it from a pair of elevator tines, moves the wafer boat over a desired part of the paddle, and lowers the wafer boat onto the paddle. The end effector carriage then returns the end effector to an initial location.Type: GrantFiled: July 10, 1995Date of Patent: June 16, 1998Assignee: Amtech Systems, Inc.Inventors: John M. Martin, Arthur W. Harrison