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US4166684A Expired / Lapsed US ⏱️ 0.0 years remaining

Three dimension camera having a film holder

Assignee: Individual
•
Filing: 1978-02-24
•
Granted: 1979-09-04
•
Expires: 1998-02-24
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Abstract

Abstract A removable film holder is provided for a photographic camera for taking three dimensional photographs in an arrangement wherein a lenticular screen is moved relative to photosensitive material during exposure. A pressure plate is mounted on a housing. Means is provided for moving the pressure plate inwardly and outwardly of the housing in directions substantially normal to the plane of the pressure plate. Means is provided for applying a uniform pressure to the pressure plate in such outward direction with respect to the housing. The pressure plate has a side for engagement with a stop affixed to the housing. Means is provided for urging the pressure plate in a direction substantially parallel with the pressure plate against the stop.

Inventors

  • 👤 Chi Y. Law

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 19:00
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/26; G03B35/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 115 words
A removable film holder for a photographic camera for taking three dimensional photographs wherein a lenticular screen is moved relative to photosensitive material during exposure, the combination comprising: a housing; a pressure plate mounted on said housing; means for moving said pressure plate inwardly and outwardly of said housing in directions substantially normal to the plane of such pressure plate; means for applying a uniform pressure to said pressure plate in such outward direction with respect to said housing; a stop affixed to said housing; said pressure plate having a side for engagement with said stop; and means for urging said pressure plate in a direction subtantially parallel with said pressure plate against said stop.
Claim 2
Dependent Claim 115 words
A removable film holder for a photographic camera for taking three dimensional photographs wherein a lenticular screen is moved relative to photosensitive material during exposure, the combination comprising: a housing; a pressure plate mounted on said housing; means for moving said pressure plate inwardly and outwardly of said housing in directions substantially normal to the plane of such pressure plate; means for applying a uniform pressure to said pressure plate in such outward direction with respect to said housing; a stop affixed to said housing; said pressure plate having a side for engagement with said stop; and means for urging said pressure plate in a direction subtantially parallel with said pressure plate against said stop.
Claim 3
Dependent Claim 48 words
A removable film holder according to claim 1 comprising actuable means mounted on said housing for locking said pressure plate in the inward direction of said housing against the urging of said uniform pressure applying means and for releasing said pressure plate for movement in such outward direction.

References Cited (Backward Citations)

US412682A Cited
US744498A Cited
US822501A Cited
US1166797A Cited
US1769370A Cited
US2056279A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-09-03 1983-03-05 1983-09-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-09-03 1987-03-05 1987-09-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-09-03 1991-03-05 1991-09-04 $7700.00 Window Closed / Lapsed

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