Linear drive for a belt tensioner

Details Linear drive for a belt tensioner Linear drive for a belt tensioner

1998-06-09

1999-09-28

Nguyen, Hoang

Power plants

One shot explosion actuated expansible chamber type motor

Having latch, rupture or safety means resisting movement of...

60637, 60638, F01B 2908

Patent

active

059569549

ABSTRACT:
A linear drive for a belt tensioner comprises a pyrotechnic propellant charge, a cylinder tube and a piston displaceably arranged therein. The propellant charge, upon ignition, provides a pressurized gas acting on the piston. The piston has a hollow interior adapted to be subjected to the pressurized gas and an axial end at which an end wall is provided. The end wall has a bursting disc arranged facing the interior of the piston and a through opening formed by a stepped bore. The stepped bore has a first section facing the interior of the piston and is provided with an edge facing the interior, and a second section adjacent the first section. The second section has a diameter which is smaller than a diameter of the first section. The bursting disc abuts at the edge of the first section of the stepped bore.

REFERENCES:
patent: 3242666 (1966-03-01), Peterson
patent: 4422669 (1983-12-01), Chiba et al.
patent: 5553890 (1996-09-01), Buhr et al.

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