Apparatus for tallying the amount of time for which a pair of co

Details Apparatus for tallying the amount of time for which a pair of co Apparatus for tallying the amount of time for which a pair of co

1997-09-17

2000-03-21

Hirshfeld, Andrew H.

Signals and indicators

Indicators

Operator movable

116316, 116321, 206 51, G09F 900

Patent

active

060389974

ABSTRACT:
In an apparatus for tallying the length of time for which a pair of disposable contact lenses have been worn, a contact lens case is retained by a resilient member against a support member. A counter defining indicia corresponding to intervals of time is coupled for rotation to the support member. The indicia can be selectively aligned with a reference mark defined by the support member, thereby displaying the amount of time for which a particular pair of contact lenses have been worn.

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patent: 5564361 (1996-10-01), Satterwhite

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