Measure tape and key chain combined device

Details Measure tape and key chain combined device Measure tape and key chain combined device

1983-03-03

1985-03-05

Little, Willis

Geometrical instruments

Area integrators

Electrical

242 848, 70456R, G01B 310

Patent

active

045022267

ABSTRACT:
A tape measure and key chain combined device comprising a cover and rotating shaft having a spiral torsion spring and key chain pulley connected to the shaft with the tape measure connected to the spring so that the key chain and tape are rewound respectively. By pulling either the tape or the key chain, the spiral torsion spring contracts to allow the tape or key chain to be extracted from the cover for use and automatically recoils after use by the spiral torsion spring expansion.

REFERENCES:
patent: 1802402 (1931-04-01), Best
patent: 2684534 (1954-07-01), Ljungberg
patent: 3191308 (1965-06-01), Lindenau
patent: 3450367 (1969-06-01), Edgell
patent: 3568483 (1971-03-01), Woofter
patent: 4422316 (1983-12-01), Thomas et al.

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