Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1998-08-25
2000-09-05
Battista, Mary Ann
Machine element or mechanism
Control lever and linkage systems
Elements
116277, 74558, F16K 3700
Patent
active
061126195
ABSTRACT:
A hand wheel cover for a valve on a gas bottle or cylinder provides a better grip for the hand wheel and also has a larger area for indicating opening and closing rotational directions. In another embodiment an indicator hand wheel cover has an indicator that shows whether a hand wheel is open or closed and has a positive lock when the cover is in the open position with a release to fill a top portion of the cover and return it to provide an indication that the valve is closed. The indicator hand wheel cover has a bottom portion with a recess underneath to fit over and engage a hand wheel, a top portion retained to the bottom portion and rotatable from a first position to a second position, the top portion having visual openings that view a first location on the bottom portion in the first position and a second location on the bottom portion in the second position, the second location being visually distinctive from the first location, a locking mechanism to lock the top portion to the bottom portion when the top portion is rotated from the first position to the second position, and a release for the locking mechanism to release the top portion from the bottom portion in the second position, to permit the top portion to be rotated from the second position to the first position.
REFERENCES:
patent: Re26838 (1970-03-01), Pecis
patent: 3910308 (1975-10-01), Mack
patent: 4165659 (1979-08-01), Fawley
patent: 4665386 (1987-05-01), Haws
patent: 4999875 (1991-03-01), Rybak
patent: 5303612 (1994-04-01), Odom et al.
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