Piston-cylinder device with position sensing means

Details Piston-cylinder device with position sensing means Piston-cylinder device with position sensing means

2004-04-07

2008-10-21

Leslie, Michael (Department: 3745)

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

C092S169100

Reexamination Certificate

active

07437988

ABSTRACT:
A pressure activated piston-cylinder device includes a cylinder barrel with a cylinder bore, a piston with a piston rod movably guided in the cylinder bore, and a piston position sensing and indicating device. The piston position sensing and indicating device includes a magnetic activating element carried on the piston and an elongate electronic contact free transducer mounted on the cylinder barrel. The cylinder barrel includes a standard type extruded aluminum alloy barrel with an outer channel which extends in an offset parallel disposition relative to the cylinder bore, and a circuit board with electronic components connected to the transducer. The transducer as well as the circuit board are located in the groove in the cylinder barrel.

REFERENCES:
patent: 4914916 (1990-04-01), Leigh-Monstevens et al.
patent: 5103172 (1992-04-01), Stoll
patent: 5198761 (1993-03-01), Hashimoto et al.
patent: 5514961 (1996-05-01), Stoll et al.
patent: 6427576 (2002-08-01), Bock et al.
patent: 6691605 (2004-02-01), Rollg.ang.rdh
patent: 6705198 (2004-03-01), Hirling
patent: 2389659 (2003-12-01), None

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