Geometrical instruments – Area integrators – Electrical
Patent
1983-04-04
1986-04-08
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
277237R, 277 12, 277DIG4, 277 53, G01B 1102
Patent
active
045803463
ABSTRACT:
In an encapsulated measuring instrument for measuring the relative position of two objects, a scale and a scanning unit are mounted within a housing which defines a slit therein. One of the objects is connected with the scanning unit by means of a follower which extends through the slit. One or more sealing strips are provided for sealing off the slit, and each of the sealing strips includes a plurality of tightly bundled fibers.
REFERENCES:
patent: 3031802 (1962-05-01), Leliaert
patent: 3404487 (1968-10-01), Johnson
patent: 3447244 (1969-06-01), Scholl
patent: 3745053 (1973-07-01), Johnson et al.
patent: 4031595 (1977-06-01), Welker
patent: 4376543 (1983-03-01), Sakagami
IBM Disc. Bulletin: "Compliant EMC Shield for Movable Covers", by Evans et al., vol. 22, #8A, 1/80.
Dr. Johannes Heidenhain GmbH
Haroian Harry N.
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