1
William J Besz, Donald P Chorley, Robert A Walker: Medical instrument location means. Micronix, Townsend and Townsend, March 31, 1992: US05099845 (309 worldwide citation)

An instrument location determining device which has a radiating element forming part of the instrument to be inserted into an object. The element radiates a signal and the signal is detected by at least one receiving element. A signal energy level measurement device is coupled to the receiving eleme ...


2
Louis S McTamaney, Yue M Wong, Rangasami S Chandra, Robert A Walker, Jorge E Lastra, Paul A Wagner, Uma K Sharma, Clyde D Watson: Multi-purpose autonomous vehicle with path plotting. FMC Corporation, Michael Lee, R C Kamp, R B Megley, December 8, 1992: US05170352 (246 worldwide citation)

An autonomous vehicle for operating in a predetermined work area while avoiding both fixed and moving obstacles. A plurality of laser, sonic and optical sensors detect targets and obstacles in the work area and provide coded signals to processors and controllers which direct the vehicle over a most ...


3
Robert A Walker: Air control system for air bed. Burd Bartz & Gutenkauf, January 2, 1990: US04890344 (96 worldwide citation)

An air supply and control apparatus has an air pump to supply air under pressure to air mattresses of an air bed. A hand control having a pair of valves functions to control the operation of the air pump to supply air to the air mattresses and vent air from the air mattresses. A second embodiment of ...


4
Robert A Walker: Air mattress with filler check valve and cap therefor. Burd Bartz & Gutenkauf, August 30, 1988: US04766628 (84 worldwide citation)

An air mattress has a filler check valve connected to an air blower to supply air to the mattress chamber. A holder secured to the air mattress locates the filler check valve in a recessed position relative to an outer wall of the mattress. The filler check valve has a sleeve mounted on the holder a ...


5
Robert A Walker: Air control system for air bed. Burd Bartz & Gutenkauf, February 6, 1990: US04897890 (82 worldwide citation)

An air pump having a diaphragm moved with a solenoid operates to supply air under pressure to air mattresses of an air bed. A hand control having a pair of valves functions to control the operation of the air pump to supply air to the air mattresses and vent air from the air mattresses.


6
Robert A Walker: Air mattress with pressure relief valve. Dynatech, Burd Bartz & Gutenkauf, February 24, 1987: US04644597 (81 worldwide citation)

An air mattress is equipped with a one-way air pressure relief valve operable to limit the air pressure in the air mattress to about 1 psi to prevent seam separation and blowout. The mattress has top and bottom walls joined to side and end walls with edge seams. The air pressure relief valve is loca ...


7
Robert A Walker: Air control system for air bed. Burd Bartz & Gutenkauf, May 16, 1989: US04829616 (80 worldwide citation)

An air supply and control apparatus has an air pump to supply air under pressure to air mattresses of an air bed. A hand control having a pair of valves functions to control the operation of the air pump to supply air to the air mattresses and vent air from the air mattresses. A second embodiment of ...


8
Robert A Walker: Border for air bed. Burd Bartz & Gutenkauf, February 12, 1991: US04991244 (75 worldwide citation)

An air bed has side-by-side air mattresses confined within the perimeter of a rectangular border. The border has a plurality of border walls each located within a fabric case. The case accommodates upper and lower foam members of different density. The upper foam member has a density so as to be suf ...


9
Robert A Walker: Air mattress. Burd Bartz & Gutenkauf, March 20, 1990: US04908895 (72 worldwide citation)

An air mattress has top and bottom walls joined to side and end walls with edge seams. A longitudinal web located within the chamber of the air mattress extends between the end walls adjacent to each side wall to form a pair of longitudinal air passages. A plurality of transverse webs located within ...


10
Robert A Walker: Air adjustable bed. Select Comfort Corporation, Burd Bartz & Gutenkauf, December 15, 1992: US05170522 (71 worldwide citation)

A bed has a foundation for supporting an air mattress. The foundation has a plurality of pivotally connected transverse plates that are moved to bend the mattress to a desired contour and shape. Open top recesses in the foundation located below the plates accommodate bags have flexible walls. The ba ...