Richard P Eddy

US Patent:

4749138, Jun 7, 1988

Filed:

Dec 1, 1986

Appl. No.:

6/936399

Inventors:

Richard P. Eddy - Gardena CA

Assignee:

Christie Electric Corp. - Torrance CA

International Classification:

B65H 1748

US Classification:

242 5519R

Abstract:

An apparatus and method for continuously storing a strip of material in a coil, such as a multi-hour motion picture theatre film. The apparatus includes a flat platter with drive means for rotating the platter, a cam mounted for rotation with the platter and having a cam track with alternating sections of greater distance and lesser distance from the center of the platter, and means for applying the incoming strip to the periphery of the coil on the platter. The applying means includes a cam follower for engaging the cam track to position the strip in a coil on the platter having inwardly directed rounded cusps with arcuate outer peripheries therebetween. In order to produce or eliminate tension in the strip, a fixed roller is positioned at the arcuate outer periphery for urging the coil inward as the roller contacts the arcuate periphery. Further improvements include provision of a friction surface on the platter for enhancing cusp formation, and a takeoff roller assembly positioned above the platter for improved strip takeoff operation.

US Patent:

41449916, Mar 20, 1979

Filed:

Oct 11, 1977

Appl. No.:

5/840815

Inventors:

Richard P. Eddy - Gardena CA

Assignee:

Christie Electric Corp. - Los Angeles CA

International Classification:

B65H 2308

US Classification:

226195

Abstract:

A film tensioning device for maintaining tension in the film in a film transport system such as a motion picture projector. A tension roller mounted between pressure rollers with the film running over the tension roller, with a spring urging the pressure rollers against the film to prevent slippage of the film on the tension roller. A curved spring carried within the tension roller and engageable with a stop providing sliding friction with the tension roller. The spring is readily removable for substitution of a different spring to provide a different magnitude of tension in the device.

US Patent:

45859388, Apr 29, 1986

Filed:

Jan 23, 1984

Appl. No.:

6/573297

Inventors:

Don B. Neumann - Laguna Beach CA
Richard P. Eddy - Gardena CA

Assignee:

Excellon Industries - CA

International Classification:

H01J 314

US Classification:

250235

Abstract:

The image formed by a laser flying spot scanner on a photosensitive medium is subject to error in size and/or position because of deviation of the photosensitive surface from a nominal position. The deviation will occur if the substrate carrying the photosensitive surface does not have a uniform thickness. In a scanning system having a code mask that produces reference signals for controlling timing of writing beam modulation, compensation for the error is provided by maintaining a fixed distance between the code mask and the surface of the medium. The code mask floats freely upon the medium surface to move up and down with height variations of the surface as the medium passes under the code member and under the writing beam. Alternatively, the platen that supports the photosensitive medium is allowed to float and is continuously urged upwardly against spacing or position sensing devices to maintain the medium surface at a fixed distance from the mask.

US Patent:

48364630, Jun 6, 1989

Filed:

Jul 1, 1987

Appl. No.:

7/068325

Inventors:

Richard P. Eddy - Gardena CA

Assignee:

Christie Electric Corporation - Torrance CA

International Classification:

B65H 1748

US Classification:

242 5519R

Abstract:

An apparatus and method for continuously storing a strip of material in a coil, such as a multi-hour motion picture theatre film. The apparatus includes a flat platter with drive means for rotating the platter, a cam mounted for rotation with the platter and having a cam track with alternating sections of greater distance and lesser distance from the center of the platter, and means for applying the incoming strip to the periphery of the coil on the platter. The applying means includes a cam follower for engaging the cam track to position the strip in a coil on the platter having inwardly directed rounded cusps with arcuate outer peripheries therebetween. In order to reduce or eliminate tension in the strip, a roller is positioned at the outer periphery for urging the coil inward as the roller contacts the coil. Further improvements include provision of a high friction surface on the platter for enhancing arc formation and a low friction surface for enhancing cusp formation, and a takeoff roller assembly positioned above the platter for improved strip takeoff operation.

US Patent:

42470587, Jan 27, 1981

Filed:

Jan 19, 1979

Appl. No.:

6/004802

Inventors:

Richard P. Eddy - Gardena CA

International Classification:

G03B 2100
G11B 2308
G11B 2312

US Classification:

242 5517

Abstract:

This invention provides for the edgewise storage of a filmstrip in the cavity between two concentric drums. The filmstrip is wound into the cavity between the two drums by a feed roller and pressure rollers as the drums rotate synchronously. The feed roller, in conjunction with the pressure rollers, serve to advance the filmstrip through the cavity, thereby providing storage for a considerable length of film. Since the film is pushed through the cavity to the opposite end, and made available there for use, the invention is especially appropriate for applications requiring endless loop filmstrips. The cavity formed by the drums may be of constant diameter (if the drums are cylindrical), arcuate, tapered, etc. , depending upon the shapes of the corresponding surfaces of the concentric drums.

US Patent:

53799801, Jan 10, 1995

Filed:

Nov 27, 1992

Appl. No.:

7/982504

Inventors:

Worthington B. Houghton - Newport Beach CA
Richard P. Eddy - Gardena CA
Jay R. McCoy - San Juan Capistrano CA

Assignee:

Newport Corporation - Irvine CA

International Classification:

F16M 1300

US Classification:

248550

Abstract:

Intermittent stabilization of a load table supported by pneumatic vibration isolators is provided by determining a load shift condition, increasing passage of gas to the pneumatic vibration isolators and imposing external or internal damping on the load table in response to that load shift condition. For internal damping, the pneumatic vibration isolator is provided with damping fluid in one of its pneumatic chambers and a damping fluid friction passage is provided between that damping fluid in that one pneumatic chamber and the other pneumatic chamber.

US Patent:

49039067, Feb 27, 1990

Filed:

Jul 13, 1989

Appl. No.:

7/380726

Inventors:

Richard P. Eddy - Gardena CA

Assignee:

Christie Electric Corp. - Torrance CA

International Classification:

B65H 2026

US Classification:

242 5519R

Abstract:

An apparatus for continuously storing a strip of material in a coil, including a flat platter and a drive for rotating the platter, the coil lying edgewise on the platter and the strip including an incoming strip portion leading to the coil periphery and an outgoing strip portion leading from the coil center, an arrangement for applying the incoming strip portion to the periphery of the coil of the strip on the platter as it rotates, in an even number of substantially straight strip sections joined at curved corners providing alternating even and odd strip sections and applying an inward pressure to the even strip sections to form the even strip sections into concave strip sections. A resistance pad positioned on the platter at the odd strip sections for engaging the strip edge and resisting movement of the strip toward the coil center, with the resistance pad having a friction producing surface with a lower level and a higher level with an inclined surface between the levels and with the outer edge of the higher level being substantially straight, and a skid pad positioned on the platter at the even strip sections for engaging the strip edge and enhancing movement of the strip toward the coil center, with the skid pad having a convex inner edge with an upward turned lip.

US Patent:

47491388, Jun 7, 1988

Filed:

Dec 1, 1986

Appl. No.:

6/936399

Inventors:

Richard P. Eddy - Gardena CA

Assignee:

Christie Electric Corp. - Torrance CA

International Classification:

B65H 1748

US Classification:

242 5519R

Abstract:

An apparatus and method for continuously storing a strip of material in a coil, such as a multi-hour motion picture theatre film. The apparatus includes a flat platter with drive means for rotating the platter, a cam mounted for rotation with the platter and having a cam track with alternating sections of greater distance and lesser distance from the center of the platter, and means for applying the incoming strip to the periphery of the coil on the platter. The applying means includes a cam follower for engaging the cam track to position the strip in a coil on the platter having inwardly directed rounded cusps with arcuate outer peripheries therebetween. In order to produce or eliminate tension in the strip, a fixed roller is positioned at the arcuate outer periphery for urging the coil inward as the roller contacts the arcuate periphery. Further improvements include provision of a friction surface on the platter for enhancing cusp formation, and a takeoff roller assembly positioned above the platter for improved strip takeoff operation.