← Back to Patent Explorer
US4446367A Expired / Lapsed US ⏱️ 0.0 years remaining

Pulse-producing transducer

Assignee: Vodafone GmbH
•
Filing: 1981-09-16
•
Granted: 1984-05-01
•
Expires: 2001-09-16
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag