Robert Lee Shrader

US Patent:

48231568, Apr 18, 1989

Filed:

Feb 16, 1988

Appl. No.:

7/155863

Inventors:

Robert L. Shrader - Castro Valley CA
Douglas F. Winnek - Carmel Valley CA

International Classification:

G03B 3508

US Classification:

354115

Abstract:

An improved camera apparatus for three-dimensional photography conventionally includes a stationary frame, a camera body with a film holder for holding photographic film in a film plane and a controllable shutter for exposing film held in the film holder, and a focusable lens assembly attached to the body e. g. by bellows. The improved camera apparatus further includes a camera body carriage moveably mounted to the frame along a first range of movement transverse to the field of view of the camera lens, a vertical optical grating within the camera body immediately in front of the film holder and moveable over a second limited range of transverse movement relative to position of the camera body carriage with respect to the base, a lens assembly carriage moveably mounted to the frame for moving the lens assembly over a third limited range of transverse movement relative to the frame, and a lens assembly carriage position control responsive to focus position of the lens relative to the film plane and to the relative position of the camera body carriage with respect to the frame for moving the lens assembly carriage relative to the film holder over the third limited range of movement.

US Patent:

40021416, Jan 11, 1977

Filed:

Nov 26, 1975

Appl. No.:

5/635513

Inventors:

Robert L. Shrader - Castro Valley CA

Assignee:

Airco, Inc. - Montvale NJ

International Classification:

C23C 1308

US Classification:

118 49

Abstract:

Mechanism for lifting a substrate holder from its carrier platform and rotating the holder during substrate coating, comprises a main assembly including a permanent magnet and concentric stripping ring, an actuating piston for lowering the assembly so that the magnet and stripping ring overlie a magnetic part of the substrate holder, and for raising the assembly with coupled magnet and holder above the carrier, a spring belt transmission for rotating the magnet and holder, an auxiliary actuating piston separately connected to the magnet within the main assembly whereby upon lowering of the main assembly with holder to the carrier platform after substrate rotation, the holder can be stripped from the magnet by independent vertical actuation of the magnet piston relative to the overlying stripping ring.

US Patent:

40421287, Aug 16, 1977

Filed:

Nov 26, 1975

Appl. No.:

5/635475

Inventors:

Robert L. Shrader - Castro Valley CA

Assignee:

Airco, Inc. - Montvale NJ

International Classification:

C23C 1308

US Classification:

214 17B

Abstract:

Substrate transfer apparatus for a vacuum coating or processing system of the multiple compartment type, comprising a rectangular platform for carrying substrates to be coated, the platform being moveable through the compartments over and between supporting and guide rollers respectively, and having a gear rack on one side extending in the direction of motion, and driving means for the platform including an electric variable speed d. c. motor connected respectively, through individual one-way running clutches to a plurality of pinion gears, each pinion gear being independently biased for separately meshing with the rack, and limit switches positioned within the compartments and operable by the platform for controlling the electric motor.