Piston-cylinder unit

Details Piston-cylinder unit Piston-cylinder unit

2007-05-22

2007-05-22

Schwartz, Christopher P. (Department: 3683)

Brakes

Internal-resistance motion retarder

Including seal or guide

C188S322120

Reexamination Certificate

active

10699229

ABSTRACT:
A piston, which has a piston rod, is guided with freedom of axial movement in a cylindrical pressure tube. At one end of the pressure tube, the piston rod passes through an opening in an end wall, which closes off the end of the pressure tube. The pressure tube is surrounded by a heat-shrink sleeve, which, at the exit end of the piston rod, extends more-or-less radially inward and has a pass-through opening through which the piston rod extends. The ring-shaped end surface at the piston rod exit end of the pressure tube is enclosed by the heat-shrink sleeve.

REFERENCES:
patent: 4281884 (1981-08-01), Freitag et al.
patent: 5332260 (1994-07-01), Heinrichs et al.
patent: 5791445 (1998-08-01), Kaufmann et al.
patent: 34 34 011 (1986-03-01), None
patent: 42 09 985 (1993-09-01), None
patent: 52-125984 (1977-10-01), None
patent: 60-169443 (1985-11-01), None
patent: 08324019 (1996-12-01), None
patent: 0161283 (1998-12-01), None
Office Action dated Aug. 24, 2005 issued for Korean Patent Application No. 10-2003-0077116 by the Korean Patent Office.
Office Action dated Jan. 19, 2006 issued for Japanese Patent Application No. 2003-374069 by the Japan Patent Office.

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