Pneumatic circuit for strapping tool having adjustable tension c

Details Pneumatic circuit for strapping tool having adjustable tension c Pneumatic circuit for strapping tool having adjustable tension c

1997-06-26

1998-12-29

Sells, James

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Automatic and/or material-triggered control

100 33PB, 13762414, 156 735, 156366, 156502, 156580, 251 37, B32B 3100

Patent

active

058535241

ABSTRACT:
A strapping tool has a timing control circuit incorporated therein which comprises a first pressure-operable valve for time-controlling a plastic strap welding operation, and a second pressure-operable valve for restricting fluid line flow from a source of fluid to an air drive motor of the tool during the tensioning phase of the strapping operation while permitting unrestricted fluid line flow from the source of fluid to the air drive motor of the tool during the welding stage of the strapping operation.

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Low-Cost Pneumatic Time-Delay Systems, Engineers' Digest, Aug., 1973, vol. 34, No. 8, pp. 29-31.
Pneumatically Delayed Control of Pneumatic Directional Control Valves, Olhydraulik und Pneumatik, 1971, vol. 15, No. 1, pp. 36-37.

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