US3750549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic roll film camera with a movable lens tube
Assignee: Rollei Werke Franke und Heidecke GmbH and Co KG
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Filing: 1971-10-15
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Granted: 1973-08-07
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Expires: 1991-10-15
Abstract
Abstract A roll film camera in which the lens tube moves forwardly to a picture-taking position when pictures are to be taken, and rearwardly to a collapsed or compact position for carrying or storage. In the rear position, the lens tube does not project at all beyond the front wall of the camera, but is completely behind the front wall, and the lens tube opening in the front wall is closed by a laterally movable closure member. A single actuating member, preferably in the form of a telescopic part of the camera case or housing, operates through various linkages to uncover the lens tube opening in the front wall of the camera and project the lens tube forwardly through it and lock the lens tube in its forward or picture-taking position, when the actuating member is moved in one direction, and to unlock the lens tube and move it rearwardly to its collapsed position within the body and then close the lens tube opening in the front wall of the body, when the actuating member is moved in the opposite direction.
Inventors
- 👤 H Waaske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:44
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04; G03B17/00; G03B17/02; G03B17/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
A photographic roll film camera comprising a telescopic housing having two telescopically movable parts collapsible and extensible in a direction transverse to an optical axis of the camera, an axially movable lens tube retractable into said housing and projectable forwardly in a direction along said optical axis through an opening in a front wall of said housing, a lock fOr locking said lens tube in its forward position, a closure plate shiftable in a direction transverse to said optical axis from a position uncovering said opening to a position closing said opening, and operating means connected to said two telescopically movable parts of said housing for moving said closure plate to an uncovering position and projecting said lens tube to its forward position upon telescopic extension of said two housing parts and for retracting said lens tube into said housing and moving said closure plate to its closing position upon telescopic collapsing of said two housing parts.
Claim 2
Dependent Claim
157 words
A photographic roll film camera comprising a telescopic housing having two telescopically movable parts collapsible and extensible in a direction transverse to an optical axis of the camera, an axially movable lens tube retractable into said housing and projectable forwardly in a direction along said optical axis through an opening in a front wall of said housing, a lock fOr locking said lens tube in its forward position, a closure plate shiftable in a direction transverse to said optical axis from a position uncovering said opening to a position closing said opening, and operating means connected to said two telescopically movable parts of said housing for moving said closure plate to an uncovering position and projecting said lens tube to its forward position upon telescopic extension of said two housing parts and for retracting said lens tube into said housing and moving said closure plate to its closing position upon telescopic collapsing of said two housing parts.
Claim 3
Dependent Claim
28 words
A camera as defined in claim 1, wherein said two housing parts have approximately the same outline when viewed in the direction of telescopic collapse and extension thereof.
Claim 4
Dependent Claim
53 words
A camera as defined in claim 1, wherein said lock includes a spring actuated wedging member for wedging said lens tube in its forward projected position, and said operating means includes means for shifting said wedging member to a non-wedging position near the beginning of a collapsing movement of said two housing parts.
Claim 5
Dependent Claim
90 words
A camera as defined in claim 1, wherein said lens tube has an abutment portion (20), and wherein said lock includes a spring-biased latch member (35,37) engaging in locking relation behind said abutment portion when said lens tube is projected to its forward position, and spring means (38) biasing said latch member toward engagement with said abutment portion, and wherein said operating means includes means for shifting said latch member to non-locking relation to said abutment portion near the beginning of a collapsing movement of said two telescopic housing parts.
Claim 6
Dependent Claim
82 words
A camera as defined in claim 4, wherein said operating means includes means for shifting said latch member to non-locking relation to said abutment portion near the beginning of a collapsing movement of said two telescopic housing parts and means for retracting said lens tube into said housing during continued collapsing movement of said two parts and means for sliding said closure plate laterally into its closing position during a final portion of such collapsing movement of said two telescopic housing parts.
Claim 7
Dependent Claim
103 words
A camera as defined in claim 1, wherein said two telescopically movable parts of said housing include a first part (1, 5) of generally rectangular shape elongated in a direction perpendicular to the optical axis of the camera, said lens tube being carried by said first part, and a second telescopic part (4) also of generally rectangular shape and elongated in the same direction as said first part, said second part constituting a sleeve-like structure surrounding at least three of the side walls of said first part and telescopically slidable relatively to said first part in the direction of elongation of both parts.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |