Mechanical back scratcher

Details Mechanical back scratcher Mechanical back scratcher

1976-07-12

1978-01-31

Trapp, Lawrence W.

Surgery

Truss

Perineal

128 62R, A61H 700

Patent

active

040710211

ABSTRACT:
Two vertically elongated shafts are mounted parallel to a wall, and are driven by a motor-powered mechanism that moves the shafts up and down in simple harmonic motion. Any one of a plurality of scratching attachments can be detachably secured between the ends of the shafts.

REFERENCES:
patent: 158877 (1875-01-01), Woolsey
patent: 1712521 (1929-05-01), Rothchild et al.
patent: 2004428 (1935-06-01), Davies
patent: 2378471 (1945-06-01), Dixon
patent: 2730737 (1956-01-01), Herman
patent: 3517235 (1970-06-01), Flowers et al.
patent: 3802421 (1974-04-01), Williams
patent: 3896796 (1975-07-01), Soderblom

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