Ergonomic instruments

Coating implements with material supply – With means to attach or conform to body of user

Patent

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Details

401 88, D19 50, A46B 502

Patent

active

053323246

ABSTRACT:
An ergonomic, hand held instrument comprising an instrument and a shell. The shell has a longitudinal axis and opposite ends and a hollow interior. The instrument is positioned within the shell with its operational end extending from one end of the shell. The shell has a groove therein extending from adjacent the one end at least a partial revolution about said shell to adjacent the other end. The groove has a bottom and an upstanding wall. The groove spirals around the shell. The bottom has a width greater than the size of one's fingers. The spiral may have one or more partial turns or a single continuous turn or partial turn between the opposite ends of the shell. The bottom extends from the wall toward the other end and is tapered from one turn of the wall to an adjacent turn of the wall with the wall facing the other end whereby one can pick up the instrument and very easily grip the instrument correctly with a lighter grip than with conventional instruments and yet press harder during use without the fatigue, cramps or calluses normally related to use of the instrument for long periods of time.

REFERENCES:
patent: D19277 (1889-08-01), Todd
patent: D21195 (1891-12-01), Mussinan
patent: D42553 (1912-05-01), Tolfree
patent: D161310 (1950-12-01), Brown
patent: D252815 (1979-09-01), Coffman
patent: 2263885 (1941-11-01), McGauley
patent: 4149811 (1979-04-01), Coffman
patent: 4217712 (1980-08-01), Koeln
patent: 4601598 (1986-07-01), Schwartz et al.

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