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Wenger Jerry A, Paine David L, Urch Harvey M, Dobrunz Ronald C, Probst Ronald N: Portable acoustical shell and riser structure. Wenger Corporation, Wegner Stellman McCord Wiles & Wood, September 30, 1975: US3908787 (30 worldwide citation)

A portable acoustical shell and riser structure including a step unit with a pivotal linkage frame system movable between an operative position with a series of vertically-spaced steps and a compacted position wherein floor-engaging wheels are positioned for floor engagement and an acoustical shell ...


2
Paine David L, Urch Harvey M: Portable folding riser. July 24, 1973: US3747706 (22 worldwide citation)

A portable folding riser for supporting a choir or the like including a pair of skeletal floor-engaging support frames disposed in spaced parallel upright positions, a plurality of ascending steps having opposite ends pivotally connected to the support frames for collapsing movement of the steps and ...


3
Paine David L, Urch Harvey M, Douglas Daryl D: Ventilating unit for sound control room. Wenger Corporation, Hofgren Wegner Allen Stellman & McCord, March 26, 1974: US3799703 (21 worldwide citation)

An enclosed ventilating unit for circulating air through a portable sound control room, including a casing adapted to be mounted on the wall of the sound control room, a fan unit in the casing, means resiliently mounting the fan unit in the casing to absorb vibration, and sound insulating means lini ...


4
Wenger Jerry A, Paine David L, Dorschner Irvin E: Portable folding riser. Wenger Corporation, July 24, 1973: US3747708 (17 worldwide citation)

A portable folding riser for supporting a choir or the like including a pair of skeletal floor-engaging support frames disposed in spaced parallel upright positions, a plurality of ascending steps having opposite ends pivotally connected to the support frames for collapsing movement of the steps and ...


5
Paine David L: Retractable column.. Paine David L, November 28, 1990: EP0399215-A1 (10 worldwide citation)

A retractable support column (10) for overhead structures that comprises there sets (11, 12, 13) of rectangular shaped links that have mating hooks (19) extending laterally outward form adjacent link chains (11, 12, 13) so that the hooks (19) can engage each other when the links (11, 12, 13) are pla ...


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Paine David L: Fluid gyroscopes. Honeywell, June 14, 1972: GB1277680-A

1277680 Gyroscopic apparatus HONEYWELL Inc 6 Oct 1970 [17 Oct 1969] 47406/70 Heading G1C An attitude sensor comprises a housing 11 defining a spherical chamber in which a spinning body of fluid is maintained in rotation by the injection of fluid through a constant section annular nozzle 20 extending ...


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Paine David L: Apparatus for sensing the direction of fluid flow over a surface. Honeywell, August 2, 1972: GB1283869-A

1283869 Measuring fluid flow; gyroscopes HONEYWELL Inc 6 Oct 1970 [17 Oct 1969] 47405/70 Heading G1C and G1R In apparatus for sensing the direction of fluid over a surface, such as applied to a flueric attitude gyroscope, a body of fluid 30, from an inlet 20 around the circumference of a spherical c ...


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