Cylinder/piston drive, especially for retightener systems in aut

Details Cylinder/piston drive, especially for retightener systems in aut Cylinder/piston drive, especially for retightener systems in aut

1981-10-02

1984-05-22

Maslousky, Paul E.

Motors: expansible chamber type

Working member position responsive motive fluid control

92117A, 92137, 60636, F15B 1520, F01B 900

Patent

active

044494432

ABSTRACT:
Cylinder/piston drive especially for re-tightening systems in automatic safety belt winding devices, with a cylinder in which a drive piston is movably guided, as well as with a pressure accumulator which can be connected to the interior of the cylinder. The drive piston 13 has in the region facing the connecting point of the pressure accumulator (cartridge 34) at least one reduced cross sectional pressure surface (annular 15, 27) and operates with a guide part (10,21) in the cylinder 1 conforming to the reduced cross sectional shape of the drive piston such that at the beginning of the pressure action, only part of the cross section of the piston is exposed to the pressure force.

REFERENCES:
patent: 2805447 (1957-09-01), Voges
patent: 3093117 (1963-06-01), Brown
patent: 3363512 (1968-01-01), Ottestad
patent: 4121840 (1978-10-01), Berg

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