US4152062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera with plastic body
Assignee: Minolta Co Ltd
•
Filing: 1977-03-07
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Granted: 1979-05-01
•
Expires: 1997-03-07
Abstract
Abstract A camera body includes at its rearside a frame having a rectangular window delineating the area of an image of an object projected onto the film and a pair of film guide longitudinal rails and is integrally formed of a reinforced polymeric resin or plastic material to reduce the weight thereof. Spacer members on which is abuttable a film pressure plate secured to the rear cover of the camera is made of metal of high machinability and are embedded in, clinched to, or threaded into the camera body so as to rearwardly project from the camera body. When abutting the spacer members, the pressure plate accurately positions a film guided by the film guide rails, in the direction perpendicular to a surface of the film, i.e., in the direction of the optical axis of a picture taking optical system since high accuracy is obtained by machining the spacer members.
Inventors
- 👤 Toshio Kobori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:54
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
182 words
A lens exchangeable lightweight camera for use with a photographic film, comprising: a camera body made of a plastic material and including a plate portion having a rectangular frame surrounding an aperture delineating the area of an image of an object projected onto said film, said plate portion including as a part thereof guide means having a rear surface for guiding said film along said aperture; metal spacer members mounted on and projecting from said plate portion and having rear surface, said spacer members extending in an intermittent manner along opposite longitudinal sides of said frame so as to be independent of each other; a pressure plate abuttable on said rear surfaces of said spacer members for engaging said film to position said film in the direction perpendicular to a surface of said film, the distance between said rear surface of said guide means and said rear surfaces of said spacer members being such that said film can pass through the space between said rear surface of said guide means and said pressure plate abutting said rear surfaces of said spacer members.
Claim 2
Dependent Claim
182 words
A lens exchangeable lightweight camera for use with a photographic film, comprising: a camera body made of a plastic material and including a plate portion having a rectangular frame surrounding an aperture delineating the area of an image of an object projected onto said film, said plate portion including as a part thereof guide means having a rear surface for guiding said film along said aperture; metal spacer members mounted on and projecting from said plate portion and having rear surface, said spacer members extending in an intermittent manner along opposite longitudinal sides of said frame so as to be independent of each other; a pressure plate abuttable on said rear surfaces of said spacer members for engaging said film to position said film in the direction perpendicular to a surface of said film, the distance between said rear surface of said guide means and said rear surfaces of said spacer members being such that said film can pass through the space between said rear surface of said guide means and said pressure plate abutting said rear surfaces of said spacer members.
Claim 3
Dependent Claim
21 words
A camera as defined in claim 1 wherein said camera body is made of a reinforced plastic material including glass fibers.
Claim 4
Dependent Claim
30 words
A camera as defined in claim 1, wherein said spacer members are embedded into said plate portion at the opposite sides of said frame upon molding of said camera body.
Claim 5
Dependent Claim
24 words
A camera as defined in claim 1, wherein said spacer members are clinched to said plate portion on the opposite sides of said frame.
Claim 6
Dependent Claim
26 words
A camera as defined in claim 1, wherein said spacer members are threaded and cemented to said plate portion at the opposite sides of said frame.
Claim 7
Dependent Claim
159 words
A lens exchangeable lightweight camera employing a film advanceable in a longitudinal direction comprising a body member integrally formed of a synthetic polymeric resin and including a plate portion which has a rectangular window delineating a photographic image projection area and film guide means located along opposite longitudinal edges of said window and having rearwardly directed faces, said camera further comprising rearwardly projecting metal spacer members mounted on said plate portion of said body member at positions transversely outwardly offset from said film guide means and extending intermittently along said guide means so as to be independent from each other, said metal spacer members having rearwardly directed end faces disposed rearwardly of said guide means rearwardly directed faces, and a pressure plate urged into engagement with said spacer member end faces and retained thereby a predetermined distance from said film guide means rearwardly directed faces to provide film border passageways between said pressure plate and said film guide means.
Claim 8
Dependent Claim
159 words
A lens exchangeable lightweight camera employing a film advanceable in a longitudinal direction comprising a body member integrally formed of a synthetic polymeric resin and including a plate portion which has a rectangular window delineating a photographic image projection area and film guide means located along opposite longitudinal edges of said window and having rearwardly directed faces, said camera further comprising rearwardly projecting metal spacer members mounted on said plate portion of said body member at positions transversely outwardly offset from said film guide means and extending intermittently along said guide means so as to be independent from each other, said metal spacer members having rearwardly directed end faces disposed rearwardly of said guide means rearwardly directed faces, and a pressure plate urged into engagement with said spacer member end faces and retained thereby a predetermined distance from said film guide means rearwardly directed faces to provide film border passageways between said pressure plate and said film guide means.
Claim 9
Dependent Claim
26 words
The camera of claim 6 wherein at least one of said spacer members comprises an enlarged rear portion embedded in said synthetic organic polymeric body member.
Claim 10
Dependent Claim
37 words
The camera of claim 6 wherein at least one of said spacer member includes a forward portion engaging an opening in said body member and having axially spaced enlarged portions clinching the opposite faces bordering said opening.
Claim 11
Dependent Claim
33 words
The camera of claim 6 wherein said body member has at least one tapped bore and at least one of said spacer members comprises a screw portion engaging and bonded to said bore.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |