Strengthened blade tape measure

Details Strengthened blade tape measure Strengthened blade tape measure

2005-11-01

2005-11-01

Fulton, Christopher W. (Department: 2859)

Geometrical instruments

Distance measuring

By flexible tape

C033S755000, C033S760000, C033S771000

Reexamination Certificate

active

06959500

ABSTRACT:
A strengthened blade tape measure includes a tape casing, a retraction unit, and a ruler blade, having an inner end attached to the retraction unit and an outer end stopped at a guiding opening of the tape casing, adapted to slidably fold between a storage position and a measuring position. In which, at the storage position, the ruler blade is retracted to receive in the tape casing in a coil flattened configuration manner via the retraction unit, and at the measuring portion, the outer end of the ruler blade is slidably pulled to extend the ruler blade in a concave-convex configuration out of the tape casing through the guider opening, wherein the ruler blade is capable of standing out from the tape casing with a measuring length at least 10 feet in a self-sustaining manner so as to prevent the ruler blade from buckling by its own weight.

REFERENCES:
patent: 4429462 (1984-02-01), Rutty et al.
patent: 4459753 (1984-07-01), Nagasawa et al.
patent: 6324769 (2001-12-01), Murray
patent: 6367161 (2002-04-01), Murray et al.
patent: 6473986 (2002-11-01), Sun
patent: 6643947 (2003-11-01), Murray
patent: 6662463 (2003-12-01), Lee

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