Structure of an electrical measuring tape

Details Structure of an electrical measuring tape Structure of an electrical measuring tape

1994-03-21

1995-08-15

Fulton, Christopher W.

Geometrical instruments

Distance measuring

By flexible tape

33750, 33769, 2423908, G01B 310, B65H 7534

Patent

active

054408202

ABSTRACT:
An improved electrical measuring tape that automatically extends and retracts the tap. Switches control a battery powered motor that drives a wheel around which the tape is wound. Induction dots near both ends of the tape cause a short-circuit to stop extension or retraction.

REFERENCES:
patent: 3324560 (1967-06-01), Snyder
patent: 4551847 (1985-11-01), Caldwell
patent: 4575944 (1986-03-01), Lin
patent: 4765063 (1988-08-01), Sing
patent: 5044089 (1991-09-01), Petkovic et al.
patent: 5104056 (1992-04-01), Jannotta et al.

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