US4382668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact cameras using a disk type film cartridge
Assignee: Minolta Co Ltd
•
Filing: 1982-03-08
•
Granted: 1983-05-10
•
Expires: 2002-03-08
Abstract
Abstract A flat compact camera employing a disk type film cartridge includes a body member having an open topped cavity and directly mounting an objective lens and a chamber member replaceably housing a film cartridge and hinged along its rear to the camera body for swinging between a photographically inoperative position retracted into the cavity and an operative condition extending from the cavity. A mirror located in the cavity is swingable between retracted and advanced positions respectively offset from and intercepting the objective lens optical axis in response to the chamber member retracted and advanced positions. The shutter and film advancing mechanisms are housed in the chamber member and the viewfinder in the body member and the chamber member is spring biased toward its extended position and the mirror toward its advanced position, the chamber being releasably locked in retracted position.
Inventors
- 👤 Nobuo Umehara
- 👤 Maki Yamashita
- 👤 Akira Yoshizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:28
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/023
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
111 words
A camera for use with a disk type film cartridge incorporating a disk type film and a hub member rotatably supported by said cartridge and fixed to the film to rotate therewith, comprising: a cartridge chamber section having a chamber for replaceably receiving said disk type film cartridge; a stepping motor including a stator stationary relative to said cartridge chamber section and a rotor rotatable relative to the stator, said rotor including a coupling portion directly engagable with said hub member so as to directly rotate the hub member; and a driving circuit for rotating said rotor a predetermined angle of rotation such that said film is advanced by one frame.
Claim 2
Dependent Claim
111 words
A camera for use with a disk type film cartridge incorporating a disk type film and a hub member rotatably supported by said cartridge and fixed to the film to rotate therewith, comprising: a cartridge chamber section having a chamber for replaceably receiving said disk type film cartridge; a stepping motor including a stator stationary relative to said cartridge chamber section and a rotor rotatable relative to the stator, said rotor including a coupling portion directly engagable with said hub member so as to directly rotate the hub member; and a driving circuit for rotating said rotor a predetermined angle of rotation such that said film is advanced by one frame.
Claim 3
Dependent Claim
24 words
A camera as set forth in claim 1, wherein said rotor is coaxial with the hub member of said cartridge housed in said chamber.
Claim 4
Dependent Claim
63 words
A camera as set forth in claim 1, further comprising: a shutter mechanism provided on said cartridge chamber section; and a shutter driving mechanism provided on said cartridge chamber section for driving said shutter mechanism, said shutter driving mechanism being coupled to said rotor of said stepping motor whereby to cock said shutter driving mechanism in response to the rotation of said rotor.
Claim 5
Dependent Claim
67 words
A camera as set forth in claim 1, further comprising: a shutter mechanism provided on said cartridge chamber section; and a shutter driving mechanism provided on said cartridge chamber section for driving said shutter mechanism, said shutter driving mechanism being drive coupled to the hub member of said cartridge received in said chamber whereby to cock said shutter driving mechanism with the rotation of said hub member.
Claim 6
Dependent Claim
18 words
A camera as set forth in claim 1, wherein said rotor is mounted to said cartridge chamber section.
Claim 7
Dependent Claim
91 words
A camera as set forth in claim 5, further comprising: a camera body section for housing said cartridge chamber section; a hinge member movably supporting said cartridge chamber on said camera body section so that said chamber section is movable between a retracted position within said camera body section and an extended position where it projects from said camera body section; and an objective lens provided on said camera body section, said objective lens being stationary during the movement of said cartridge chamber section between said retracted position and extended positions.
Claim 8
Dependent Claim
20 words
A camera as set forth in claim 6, further comprising a viewfinder optical system fixed to said camera body section.
Claim 9
Dependent Claim
83 words
A camera as set forth in claim 6, wherein said camera body section is of a flat rectangular form having a narrow side wall provided with light entry window for said objective lens and wherein said camera further comprises a mirror provided in said camera body section, said mirror being movable between an operative position wherein said mirror is located in the photographic optical path of said objective lens and a rest position wherein said mirror is out of said photographic optical path.
Claim 10
Dependent Claim
39 words
A camera as set forth in claim 6, further comprising means for moving said mirror from its rest to its operative position in response to the movement of said cartridge chamber section from its retracted to its extended position.
Claim 11
Dependent Claim
20 words
A camera as set forth in claim 9, further comprising means urging said cartridge chamber section toward its extended position.
References Cited (Backward Citations)
US3630130A
Cited
US4041512A
Cited
US4032940A
Cited
US4222649A
Cited
US4202614A
Cited
US4265525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |