Rodless pneumatic cylinder having a pair of driven elements

Details Rodless pneumatic cylinder having a pair of driven elements Rodless pneumatic cylinder having a pair of driven elements

1994-10-11

1995-11-21

Denion, Thomas E.

Expansible chamber devices

Sealed opening in longitudinal wall of chamber for receiving...

92137, 92 137, 92 20, F01B 2900

Patent

active

054676851

ABSTRACT:
A linear actuator, adapted especially for picking up and transporting workpieces, comprises a pneumatic, rodless cylinder having a pair of driven elements mounted on opposite sides of its body. The first driven element is directly connected to the piston of the cylinder via a sealed, longitudinal slot formed in the cylinder body and the second driven element is drivably connected to the piston or first driven element by a flexible drive band that passes around rollers mounted at opposite ends of the cylinder body. The driven elements therefore move linearly in opposite directions to one other upon actuation of the rodless cylinder. The second driven element may be fixedly secured to a stationary structure so that, upon actuation of the cylinder, the cylinder body itself and the first element will simultaneously execute linear motion in the same direction whereby the first element, which may have a work piece--gripping device mounted on it, will in effect execute double its normal stroke length.

REFERENCES:
patent: 2097561 (1937-11-01), Curtis
patent: 3820446 (1974-06-01), Granbom et al.
patent: 4656881 (1987-04-01), Goedecke et al.
patent: 4664020 (1987-05-01), Kaiser
patent: 4813341 (1989-03-01), Vaughn
patent: 5178056 (1993-01-01), Mai
patent: 5195391 (1993-03-01), Barbat et al.
patent: 5303638 (1994-04-01), Green
patent: 5347914 (1994-09-01), Kinoshita et al.

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