Piston and cylinder device with fixed conductive guide on periphery of cylinder

Patent 5103172 Issued on April 7, 1992. Estimated Expiration Date:

August 5, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Piston and cylinder device
Patent #: 4176586
Issued on: 12/04/1979
Inventor: Stoll , et al.

Decorative lighting track system Patent #: 4814953
Issued on: 03/21/1989
Inventor: Distasio

Inventor

Stoll, Kurt

Assignee

Festo KG

Application

No. 740444 filed on 08/05/1991

US Classes:

324/226, Combined92/5R, WITH (1) SIGNAL OR INDICATOR OR (2) INSPECTION WINDOW IN EXPANSIBLE CHAMBER WALL PORTION324/207.11, Displacement324/207.13, Having particular sensor means324/207.22, Having particular sensed object324/207.24, Linear324/262Magnetic test structure elements

Examiners

Primary: Snow, Walter E.

Attorney, Agent or Firm

Flynn, Thiel, Boutell & Tanis

Foreign Patent References

2516495 DE. 10/13/1976
3024244 DE. 01/13/1981
3130056 DE. 11/13/1983
8315785 DE. 06/13/1986
8632990 DE. 04/13/1987
3644591 DE. 07/13/1987

International Classes

G01N 027/72
G01R 033/00
F01B 025/26
F01B 031/12

Foreign Application Priority Data

1989-04-08 DE

Abstract

A control device for piston and cylinder units comprises a sensor adapted to be operated by a moving member and arranged on a guide device which has at least one electrical track conductor. Via a contacting device the sensor is connected with the electrical track conductors so as to make possible the transmission of sensor signals without leads.