GB814323A - - Google Patents

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Publication number
GB814323A
GB814323A GB814323DA GB814323A GB 814323 A GB814323 A GB 814323A GB 814323D A GB814323D A GB 814323DA GB 814323 A GB814323 A GB 814323A
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Prior art keywords
marker
fixed
gates
rotor
passes
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
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Publication of GB814323A publication Critical patent/GB814323A/en
Expired legal-status Critical Current

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Abstract

814,323. Measuring angles. MULLARD RADIO VALVE CO. Ltd. March 13, 1957 [May 16, 1956], No. 15327/56. Class 40 (3). [Also in Groups XX and XXXVIII] In an apparatus for measuring the angle between a fixed marker 7 and an adjustable marker 8, the readings of counters Cx, Cr fed by a pulse generator P through gates Gx, Gr are compared by a computation unit D, the gates Gx, Gr being opened when a marker 6 on a rotor 3 passes the marker 7 and closed when the marker 6 passes the markers 8, 9 respectively. 9 is a fixed datum marker, which may be omitted when the marker 7 serves to open and close the gate Gr. In a modification, Fig. 1 (Comp.), auto-collimators 17, 18 provided with light sources S and photo-cells P from the fixed and adjustable markers and co-operate with a mirror M on the rotor 3.
GB814323D Expired GB814323A (en)

Publications (1)

Publication Number Publication Date
GB814323A true GB814323A (en) 1900-01-01

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ID=1752328

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GB814323D Expired GB814323A (en)

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GB (1) GB814323A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454871A (en) * 1968-02-19 1969-07-08 Texaco Inc Apparatus for measuring and controlling spark advance of internal combustion engine
DE3218903A1 (en) * 1982-05-19 1983-11-24 Heidenhain Gmbh Dr Johannes LIGHT ELECTRICAL MEASURING DEVICE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454871A (en) * 1968-02-19 1969-07-08 Texaco Inc Apparatus for measuring and controlling spark advance of internal combustion engine
DE3218903A1 (en) * 1982-05-19 1983-11-24 Heidenhain Gmbh Dr Johannes LIGHT ELECTRICAL MEASURING DEVICE
US4549808A (en) * 1982-05-19 1985-10-29 Dr. Johannes Heidenhain Gmbh Movable aperture photoelectric measuring instrument

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