Uncoiling and coiling tape measure

Details Uncoiling and coiling tape measure Uncoiling and coiling tape measure

1979-01-23

1981-06-30

Stephan, Steven L.

Geometrical instruments

Area integrators

Electrical

33138, 52108, 242 848, G01B 302, E04H 1218, B65H 7516

Patent

active

042755034

ABSTRACT:
A coiling tape measure which is coiled and stored in a housing. In its uncoiled state the tape has a slightly curved cross-sectional section with a convex lower surface. On its convex lower surface there are one or more closed channels and a device is provided for supplying a pressure medium to said closed channels to effect an increase in the self-supporting capacity of the tape measure. Several embodiments of the channels on the convex surface and several embodiments of the pressure supply device are disclosed.

REFERENCES:
patent: 1947392 (1934-02-01), Guntermann et al.
patent: 2212128 (1940-08-01), Richter
patent: 3364632 (1968-01-01), Isaac

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