Supports – Stand – Standard type
Reexamination Certificate
2005-01-11
2005-01-11
Barfield, Anthony D (Department: 3636)
Supports
Stand
Standard type
C248S631000, C297S344190, C297S463100
Reexamination Certificate
active
06840484
ABSTRACT:
Disclosed is a gas cylinder including: a spindle at least having a flange washer of a cavity shape having a region D1and a region D2whose inner diameters are different; a piston inserted to the open inside of the spindle; a piston rod whose one end is fixed in the piston; a base tube having a mounting member on which the lower end of the spindle is mounted with the mounting member inserted to the flange washer; and a pipe holder inserted to the tapered portion in the upper part of the spindle.
REFERENCES:
patent: 6199952 (2001-03-01), Davis
patent: 6481675 (2002-11-01), Yoon
Barfield Anthony D
Litman Richard C.
Sam Hongea Co., Ltd.
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