Geometrical instruments – Distance measuring – By flexible tape
Patent
1996-11-21
1997-12-23
Fulton, Christopher W.
Geometrical instruments
Distance measuring
By flexible tape
33755, 33770, G01B 310
Patent
active
056996233
ABSTRACT:
An improvement for the structure of end hook for the tape measure consists of a U-shaped flexible elongated metal folder and a conventional end hook. The U-shaped flexible elongated metal folder, having a slim parallel gap which is slightly greater than the thickness of the metallic tape, sandwiches the tape therebetween at the outer end of the tape below the end hook. At the outer edge of the tape, there is a rectangular notch, whose depth is equal to or a little greater than the thickness of the end hook. The flexible elongated metal folder is longer than the end hook, with the closed end thereof engaging the said rectangular notch, so that there is an extended portion stretching beyond the inner end of the end hook. The conventional end hook is mounted on the said metal folder and the tape, overlapping with the metal folder and the tape, then all these three elements are riveted together. The extended portion of the metal floder without overlapping with the end hook is riveted with the tape only. The reeinforcement with the additional U-shaped flexible elongated metal folder improves the structure of conventional end hook in enhancing considerably the strength to withstand the stress of impact, forfending the usual disadvantage of fracture or rupture of the tape and rivet failure.
REFERENCES:
patent: 3131480 (1964-05-01), Quenot
patent: 4300289 (1981-11-01), DeHaven
Chan Raymond Y.C.
Fulton Christopher W.
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