Pneumatic or hydraulic cylinder with piston position detector mo

Details Pneumatic or hydraulic cylinder with piston position detector mo Pneumatic or hydraulic cylinder with piston position detector mo

1998-04-08

2000-08-15

Ryznic, John E.

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

403381, F01B 2526

Patent

active

061019208

ABSTRACT:
A pneumatic or hydraulic cylinder (1) includes a cylinder tube (3) consisting of a non-ferromagnetic material in which a piston moves. At least one longitudinal channel (9) is recessed in the outer surface of the cylinder tube in which a signal transmitter (8) is secured to scan the piston location without physical contact. A permanent magnet is located on the piston which activates the signal transmitter (8) by its magnetic field. A leaf spring (17) is provided to secure the signal transmitter (8) in the longitudinal channel (9) and is attached to the housing of the signal transmitter by means of a screw (12) and a nut (19) with an inclined surface (20) that moves outward against the wall of the longitudinal channel (9) when the screw is tightened and thus tightly clamps the signal transmitter (8). The attaching device, consisting of the screw (12) with nut (18) and leaf spring (17), and the signal lead (10) are positioned on the same end of the signal transmitter (8).

REFERENCES:
patent: 3043411 (1962-07-01), Wyrough
patent: 3135164 (1964-06-01), Scotto et al.
patent: 3577316 (1971-05-01), Piette
patent: 3845578 (1974-11-01), Holmstrom
patent: 4086456 (1978-04-01), Bone
patent: 4447171 (1984-05-01), Baldoni et al.
patent: 4504168 (1985-03-01), Miller
patent: 4896584 (1990-01-01), Stoll et al.
patent: 5222826 (1993-06-01), Hanke
patent: 5335587 (1994-08-01), Stoll
patent: 5438911 (1995-08-01), Fielder et al.
patent: 5813313 (1998-09-01), Stoll et al.

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