THOMAS CAMPBELL
Broker in Dedham, MA
License number
Massachusetts 84534
Issued Date
Jun 1, 1986
Expiration Date
Dec 8, 2003
Type
Salesperson
Address
Address
Dedham, MA 02026
Professional information
Camera Back Including Improved Film Assemblage
US Patent:
5802402, Sep 1, 1998
Filed:
Apr 15, 1997
Appl. No.:
8/834451
Inventors:
Irving S. Lippert - Lexington MA
Thomas H. Campbell - Dedham MA
Edward H. Coughlin - Norwood MA
Thomas H. Campbell - Dedham MA
Edward H. Coughlin - Norwood MA
Assignee:
Polaroid Corporation - Cambridge MA
International Classification:
G03B 1750
US Classification:
396 42
Abstract:
A film cassette may be used for housing film units of the self-developing type, each having a photosensitive area, a pod of processing fluid, and a leading edge. The film cassette may be used in a film assemblage, camera back, or imaging device having either a straight or a curvilinear film path configuration. One such film cassette includes: a chamber defined by forward and rear walls, a pair of side walls, and leading and trailing end walls; means for resiliently supporting the film units within the chamber; first spread control means for use when the imaging device has a straight film path configuration, the first spread control means including at least one projection formed on an interior surface of the forward wall; and second spread control means for use when the imaging device has a curvilinear film path configuration, the second spread control means including at least one projection formed on a bottom surface of the rear wall.
Instant Photography Camera And Film Cassette
US Patent:
5721966, Feb 24, 1998
Filed:
Sep 13, 1996
Appl. No.:
8/710181
Inventors:
Thomas H. Campbell - Dedham MA
Edward H. Coughlin - Norwood MA
Irving S. Lippert - Lexington MA
Edward H. Coughlin - Norwood MA
Irving S. Lippert - Lexington MA
Assignee:
Polaroid Corporation - Cambridge MA
International Classification:
G03B 1750
US Classification:
396 42
Abstract:
An instant photography camera can contain a combination of improved features including cleaning pads for continuous cleaning of spread rollers throughout the life of the camera, a flexible non-coiled film shade for preventing light piping along a film unit which is exiting the camera, and a dual independent spread control feature on a film cassette so that the same film cassette can be used in different cameras. The film cassette includes first and second spread control features for providing even spreading of processing liquid across a film unit; the first spread control feature used in a straight film track configuration, and the second spread control feature being used in a chute film track configuration.