Geometrical instruments – Distance measuring – By flexible tape
Patent
1989-10-15
1991-11-12
Cuchlinski, Jr., William A.
Geometrical instruments
Distance measuring
By flexible tape
33761, 33764, 33771, G01B 310
Patent
active
050636863
ABSTRACT:
In a preferred embodiment, an extendable tape measure made of polypropylene plastic has upper and lower elongated tapes having elongated sides integrally permanently connected by upright integral permanent flanges forming a squared tube of which the upper surface of the upper tape has length-indicating indicia arranged along the longitudinal axis thereof. The flanges are uprightly rigid lending support against downward bending of extended portions of the tape measure but sufficiently resilient as to be bendable at squared corners of junction with the upper and lower tapes when subjected to reforming pressure by a retraction first port in a forward face of a retraction-storage casing, to flatten the squared tubular shape to a flattened windable state during retraction. An upper inner end of one flange is enalrged and forms a first slot between that upper inner end relative to and in juxtaposition to the upper elongated tape. A lower end of a remaining other flange is enlarged and forms a second slot or space between that lower inner end relative to an in juxtaposition to the lower elongated tape. The enlarged portions and slots are positioned to resist further leaning in a direction of erection to the squared position as resiliently formed and supported by the port when the tape measure is extended to an extended state.
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Cuchlinski Jr. William A.
Wirthlin Alvin
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