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Timothy E Steenwyk, Robert C Knapp: Exterior mirror sub-assembly with combined electronic circuitry and mirror element. Gentex Corporation, Brian J Rees, Price Heneveld Cooper DeWitt & Litton, June 12, 2001: US06244716 (221 worldwide citation)

A simplified mirror sub-assembly for exterior automotive mirrors includes an electrochromic mirror element, a circuit board disposed on a rear surface of the mirror element, and a carrier plate attached to the circuit board via double-sided adhesive tape. The sub-assembly may include a conductive tr ...


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Jon H Bechtel, Frederick T Bauer, Joseph S Stam, Robert C Knapp, Robert R Turnbull, David J Schmidt, G Bruce Poe, David L Plangger, Robert H Nixon, Eric R Fossum, Timothy E Steenwyk: Vehicle equipment control with semiconductor light sensors. Gentex Corporation, Price Heneveld Cooper DeWitt & Litton, June 1, 2004: US06742904 (190 worldwide citation)

Equipment on automotive vehicle is controlled by a system including at least one semiconductor light sensor having variable sensitivity to light. Each light sensor generates a light signal indicative of the intensity of light incident on the light sensor. Control logic varies the sensitivity of the ...


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Edward G Nielsen, Timothy E Steenwyk: Apparatus and method for controlling a hydraulic excavator. Laser Alignment, Price Heneveld Cooper DeWitt & Litton, May 9, 1989: US04829418 (52 worldwide citation)

A control for an excavator controls the position of the bucket cutting edge to a desired depth accurately by a calibrating laser receiver mounted on the excavator stick member and passed through a stationary laser plane wherever the stick is moved into or out of a trench. Linear position encoders mo ...


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Edward G Nielsen, Timothy E Steenwyk: Apparatus and method for controlling a hydraulic excavator. Laser Alignment, Price Heneveld Cooper DeWitt & Litton, September 12, 1989: US04866641 (38 worldwide citation)

A control for an excavator controls the position of the bucket cutting edge to a desired depth accurately by a calibrating laser receiving mounted on the excavator stick member and passed through a stationary laser plane wherever the stick is moved into or out of a trench. Linear position encoders m ...


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Timothy E Steenwyk, Eric J Walstra: Control for hydraulically operated construction machine having multiple tandem articulated members. Laser Alignment, Van Dyke Gardner Linn & Burkhart, November 12, 1996: US05572809 (34 worldwide citation)

An apparatus and method for controlling a hydraulically operated construction machine, having a plurality of tandem articulated members which are controlled in a manner that movement of one of the members is controlled in response to movement of another of the members, in order to move the members i ...


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Edward G Nielsen, Timothy E Steenwyk: Apparatus and method for controlling a hydraulic excavator. Laser Alignment, Price Heneveld Cooper DeWitt & Litton, July 31, 1990: US04945221 (33 worldwide citation)

A control for an excavator controls the position of the bucket cutting edge to a desired depth accurately by a calibrating laser receiver mounted on the excavator stick member and passed through a stationary laser plane wherever the stick is moved into or out of a trench. Linear position encoders mo ...


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Edward G Nielsen, Timothy E Steenwyk: Apparatus and method for controlling a hydraulic excavator. Laser Alignment, Price Heneveld Cooper DeWitt & Litton, February 14, 1989: US04805086 (31 worldwide citation)

A control for an excavator controls the position of the bucket cutting edge to a desired depth accurately by a calibrating laser receiver mounted on the excavator stick member and passed through a stationary laser plane wherever the stick is moved into or out of a trench. Linear position encoders mo ...


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Timothy E Steenwyk: Control for hydraulically operated construction machine having multiple tandem articulated members. Laser Alignment, Van Dyke Gardner Linn & Burkhart, September 21, 1999: US05953838 (21 worldwide citation)

An apparatus and method for controlling a hydraulically operated construction machine having a plurality of tandem articulated members which move in a particular pattern, wherein movement of one of the articulated members is controlled in response to movement of a second one of the articulated membe ...


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Dirrick J Ferrell, Ross C Stoepker, Timothy E Steenwyk, Eric Jon Walstra: Control and method for positioning a tool of a construction apparatus. Laser Alignment, Van Dyke Gardner Linn & Burkhart, April 2, 2002: US06364028 (15 worldwide citation)

A control system for establishing grade and elevation control for a tool of a construction apparatus for maintaining the vertical position of the tool relative to a reference includes a first ultrasonic transducer configured to be carried by the construction apparatus, with the first transducer tran ...