Protective sleeve

Details Protective sleeve Protective sleeve

2006-10-03

2006-10-03

Kramer, Devon C. (Department: 3683)

Brakes

Wheel

Axially movable brake element or housing therefor

C267S122000, C277S636000, C403S050000

Reexamination Certificate

active

07114599

ABSTRACT:
A protective sleeve made of an elastic material for a piston-cylinder unit with a piston disposed in a cylinder bore in an axially displaceable manner. The protective sleeve is provided with annular end segments that can be supported on the outer piston wall on one side and in the cylinder bore on the other. A middle segment of an essentially hollow cylindrical shape connects the two end segments with each other and, when the piston is in an entered position, is folded like a rag in a radial direction as in a bellows. To ensure reliable and correct folding of the protective sleeve during the entry of the piston, the middle segment is subdivided in the axial direction into annular longitudinal segments, the lengths of which are approximately equal to the length of a fold wall, and at least one of the longitudinal segments is provided with an essentially annular stiffening zone.

REFERENCES:
patent: 3041885 (1962-07-01), Christiansen
patent: 4199159 (1980-04-01), Evans
patent: 4327925 (1982-05-01), Alexander et al.
patent: 4530506 (1985-07-01), Weiler et al.
patent: 5219052 (1993-06-01), Fanelli et al.
patent: 5443141 (1995-08-01), Thiel et al.
patent: 6053289 (2000-04-01), Bauer et al.
patent: 6361028 (2002-03-01), Hubbell
patent: 6651995 (2003-11-01), Buttner
patent: 2004/0026194 (2004-02-01), Cortinovis
patent: 0448833 (1990-12-01), None
patent: 2020380 (1979-11-01), None

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