US4446367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse-producing transducer
Assignee: Vodafone GmbH
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Filing: 1981-09-16
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Granted: 1984-05-01
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Expires: 2001-09-16
Abstract
Abstract A linear or annular optical grating cooperates with a detector unit having two detectors on the front face of a carrier member of rotational symmetry and being either directly rotatable through a rear-face screwdriver slot, or via a cam-operated lever, the cam being rotatable by screwdriver action. The two detectors are aligned along a diameter line of the carrier member and will produce two phase-shifted pulse trains upon relative movement between the detection unit and the grating. The preferred field of application is matrix printers, the grating defining print position.
Inventors
- 👤 Alfred Babsch
- 👤 Gerhard Lohrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:03
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/26; G01D5/32; G01D5/34; G01D5/347; G01D5/34707; G01D5/34715; G01D5/264; G01P; G01P13/00; G01P13/02; G01P13/04; G01P13/045; G01P3/00; G01P3/42; G01P3/44; G01P3/48; G01P3/481; G01P3/486
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
142 words
A transducer station which includes an optical grating and a support member, the grating and the member being movable relative to each other along the direction of extension of the grating, there being a source of radiation on the member, the grating having a disposition so that the source illuminates the grating, permitting optical pickup, the station further comprising: means associated with the support member for defining a bore of rotational symmetric contour; a carrier member rotatably disposed in said bore and having a front face; a pair of detectors disposed on the front face, the bore and the carrier member being oriented so that the detectors of the pair can be aligned in directions transverse to said direction of extension; and means defining a screwdriver slot and provided for permitting turning of the carrier member to affect aligning of the detectors.
Claim 2
Dependent Claim
142 words
A transducer station which includes an optical grating and a support member, the grating and the member being movable relative to each other along the direction of extension of the grating, there being a source of radiation on the member, the grating having a disposition so that the source illuminates the grating, permitting optical pickup, the station further comprising: means associated with the support member for defining a bore of rotational symmetric contour; a carrier member rotatably disposed in said bore and having a front face; a pair of detectors disposed on the front face, the bore and the carrier member being oriented so that the detectors of the pair can be aligned in directions transverse to said direction of extension; and means defining a screwdriver slot and provided for permitting turning of the carrier member to affect aligning of the detectors.
Claim 3
Dependent Claim
37 words
A transducer station as in claim 1, the detectors being aligned on the carrier along a diameter line of the face in relation of a point of turning when the carrier member is turned in the bore.
Claim 4
Dependent Claim
29 words
A transducer station as in claim 1 or 2, and including a diaphragm on the member having a slot, the detectors being disposed adjacent to ends of the slot.
Claim 5
Dependent Claim
13 words
A transducer station as in claim 1, the grating being a linear one.
Claim 6
Dependent Claim
35 words
A transducer station as in claim 1, the grating being defined as an annular track on a rotating disk, the associated means including a detachable construction which is radially positionable with respect to said disk.
Claim 7
Dependent Claim
23 words
A station as in claim 1, the carrier member having a rear face, the screwdriver slot being directly provided in said rear face.
Claim 8
Dependent Claim
42 words
A station as in claim 1, the carrier member being inserted in a socket, said associated means having said bore and including means for mounting the socket for limited turning, the means for mounting including an adjusting screw having said screwdriver slot.
Claim 9
Dependent Claim
20 words
A station as in claim 7, the socket being mounted for cam-controlled radial adjustment with respect to said carrier member.
Claim 10
Dependent Claim
151 words
A transducer station which includes a rotatable optical grating with at least one annular track, further including illuminating means for the track permitting optical pickup of light as modulated by the rotating grating, the station further comprising: means having a bore of rotational symmetry; a carrier member rotatably disposed in said bore and having a front face; a pair of detectors disposed on the front face along a line, upon turning of the carrier member the said line can be adjusted to coincide with a radial line of the rotating disk or obliquely thereto, the detectors also positioned for detecting said modulation, separately and individually; a lever for said carrier member; cam means coupled to a free end of the lever for pivoting the lever, thereby turning said carrier member in said bore; and cam-actuating means for acting on the cam means to adjust the cam means for pivoting the lever.
Claim 11
Dependent Claim
151 words
A transducer station which includes a rotatable optical grating with at least one annular track, further including illuminating means for the track permitting optical pickup of light as modulated by the rotating grating, the station further comprising: means having a bore of rotational symmetry; a carrier member rotatably disposed in said bore and having a front face; a pair of detectors disposed on the front face along a line, upon turning of the carrier member the said line can be adjusted to coincide with a radial line of the rotating disk or obliquely thereto, the detectors also positioned for detecting said modulation, separately and individually; a lever for said carrier member; cam means coupled to a free end of the lever for pivoting the lever, thereby turning said carrier member in said bore; and cam-actuating means for acting on the cam means to adjust the cam means for pivoting the lever.
Claim 12
Dependent Claim
33 words
A station as in claim 9, the socket being mounted on a plate having an opening, further including a rotatable cam engaging the opening for moving said plate for obtaining said radial adjustment.
References Cited (Backward Citations)
US3902063A
Cited
US4247769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-01 | 1987-10-31 | 1988-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-01 | 1991-10-31 | 1992-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-01 | 1995-10-31 | 1996-05-01 | $7700.00 | Window Closed / Lapsed |