Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Including application of internal fluid pressure to hollow...
Patent
1994-11-23
1996-12-17
Timm, Catherine
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Including application of internal fluid pressure to hollow...
264532, 425529, B29C 4912
Patent
active
055850669
ABSTRACT:
The procedure is designed for the pneumatic operation of a device in which at least one structural element is pneumatically actuated. The actuation is done by primary working air, which is fed to the pneumatic structural element from a primary working-air supply. In addition to the primary working-air supply at least one secondary working-air supply is used, which is provided with a lower pressure level than that of the primary working-air supply. After the execution of a working operation by a pneumatic structural element by means of a compressed-air supply from the primary working-air supply, during a transition phase a venting into the secondary working-air supply is carried out. After the transition phase a venting of the first pneumatic structural element vis-a-vis an ambient pressure is carried out. A second pneumatic working operation is powered by air from the secondary working-air supply.
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Patent Abstracts of Japan, vol. 18, No. 115 (M-1566), Feb. 24, 1994, JP 53 09 726, Nov. 22, 1993.
Design Engineering, "The Efficient Use Of Compressed Air", Dec. 1977, p. 51 and following sides.
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