US3778151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfilm camera with longitudinal and cross slides movable in steps
Assignee: Pentacon GmbH Foto und Feinwerktechnik
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Filing: 1972-10-02
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Granted: 1973-12-11
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Expires: 1992-10-02
Abstract
Abstract A microfilm camera includes a housing, a longitudinal slide which can be moved in steps in said housing, and a cross slide which can also be moved in steps within the housing. A cross slide is provided within the housing for carrying one film sheet at a time. To the longitudinal slide and the cross slide there are attached transport bars having grooves which are cut transversely to the movement of the respective slide and which are engaged by pins mounted on plates drivable by electric motors. The pins are diametrically arranged on the pin plates and are spaced at a distance equal to the distance between the grooves in the transport bars. The pins also serve to actuate contacts for opening and closing the circuits of the respective electromotors.
Inventors
- 👤 H Zimmet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:19
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/583
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
In a microfilm camera having a housing, a longi-tudinal slide which can be moved stepwise within the housing, and a cross slide in said housing for carrying one sheet at a time, the provision of a. first and second transport bars attached respect-ively to said longitudinal and cross slides, said bars having formed therein elongated openings extending transversely to the movement of the respective slide, b. first and second pin plates mounted in the housing, c. first and second electromotors for driving said pin plates, d. two diametrically opposed pins provided on each pin plate, said pins being spaced apart at a dis-tance equal to the spacing of the elongated openings, and e. switch contacts for opening and closing the circuit through the electromotors being operable by said pins.
Claim 2
Dependent Claim
129 words
In a microfilm camera having a housing, a longi-tudinal slide which can be moved stepwise within the housing, and a cross slide in said housing for carrying one sheet at a time, the provision of a. first and second transport bars attached respect-ively to said longitudinal and cross slides, said bars having formed therein elongated openings extending transversely to the movement of the respective slide, b. first and second pin plates mounted in the housing, c. first and second electromotors for driving said pin plates, d. two diametrically opposed pins provided on each pin plate, said pins being spaced apart at a dis-tance equal to the spacing of the elongated openings, and e. switch contacts for opening and closing the circuit through the electromotors being operable by said pins.
Claim 3
Dependent Claim
77 words
A microfilm camera according to claim 1, wherein in the dead centre situation between the transport pins and the elongated slots, trip cams of each pin plate open two operating switch contacts simultaneously, a first operating switch pair being electrically parallel to a starting switch for the rotation of one electromotor in one direction, and the other operating switch being electrically parallel to the starting switch for the rotation of said one electromotor in the opposite direction.
Claim 4
Dependent Claim
20 words
A microfilm camera according to claim 2, wherein the transport pins serve as trip cams actuating the operating switch contacts.
Claim 5
Dependent Claim
24 words
A microfilm camera according to claim 1, wherein in that the transport grooves are arranged perpendicularly to the direction of movement of the slides.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |