Geometrical instruments – Distance measuring – By flexible tape
Patent
1989-06-29
1991-04-16
Shoap, Allan N.
Geometrical instruments
Distance measuring
By flexible tape
33754, G01B 310
Patent
active
050071785
ABSTRACT:
A measuring tape device which includes a casing having an aperture through which a coilable measuring tape can be extracted and retracted. A coilable measuring tape is disposed in the casing with a distal end projecting from the aperture. A first brake mechanism is mounted on the casing for normally applying a controlled drag on the tape which allows the tape to be extracted or retracted against the drag to any given length and held at that length. A second brake mechanism is mounted on the casing and is selectively operable for applying a positive lock on the tape greater in magnitude than the drag of the first brake mechanism, to prevent accidental extraction or retraction of the tape.
REFERENCES:
patent: 2893656 (1959-07-01), Carlson
patent: 3164907 (1965-01-01), Quenot
patent: 3214836 (1965-11-01), West
patent: 4029426 (1977-06-01), Sims, Jr.
patent: 4153996 (1979-05-01), Rutty
patent: 4194703 (1980-03-01), Roe
Dewire Robert J.
Kozlowski Walter A.
DePumpo Daniel G.
Sears Roebuck & Co.
Shoap Allan N.
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