Drive pulley, compact buckle pretensioner
First Claim
Patent Images
1. A pretensioner (20) comprising:
- a housing (22) with a bore (26);
a piston (50) slidably received within the bore (26), the piston further including an arcuate contact surface (58,
60) at one end thereof;
a flexible link (92) having a first end (94) fixedly connected to the housing (22), a medial portion positioned about the contact surface and an opposite end (93) operatively connected to a movable buckle (90);
first means (80) for propelling the piston from a first, static position to a second position to affect a mechanical advantage in the movement of the buckle (90).
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0 Petitions
Accused Products
Abstract
A pretensioner (22) comprising: a housing (20) with a bore (26); a piston (50) slidably received within the bore (26), the piston further including a pulley surface (58, 60) at one end thereof; a flexible link (92) having a first end (94) fixedly connected to the housing (22), a medial portion slidably positioned about the pulley surface and an opposite end (93) adapted to be connected to a buckle (90); a pyrotechnic device (80) for propelling the piston from a first, static position to a second position to affect a mechanical advantage in the movement of the buckle (90).
38 Citations
18 Claims
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1. A pretensioner (20) comprising:
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a housing (22) with a bore (26); a piston (50) slidably received within the bore (26), the piston further including an arcuate contact surface (58,
60) at one end thereof;a flexible link (92) having a first end (94) fixedly connected to the housing (22), a medial portion positioned about the contact surface and an opposite end (93) operatively connected to a movable buckle (90); first means (80) for propelling the piston from a first, static position to a second position to affect a mechanical advantage in the movement of the buckle (90). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A combination comprising a pretensioner (22) and a seat belt buckle (90), the pretensioner comprising:
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a housing (20) with a bore (26); a flexible link (90), the flexible link operatively connecting the buckle and the housing; a piston (50) slidably received within the bore (26), the piston including first means (60) cooperating with the flexible link for moving the buckle (90) a distance greater than the movement of the piston. second means (80) for propelling the piston, in a direction, from a first, static position to a second position to affect the movement of the buckle (90). - View Dependent Claims (15, 16, 17)
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18. A pretensioner comprising:
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a housing with a bore; a piston (50) slidably received within the bore, the piston further including an arcuate contact surface at one end thereof; a flexible link having a first end fixedly connected to the housing, a medial portion positioned about the contact surface and an opposite end operatively connected to a safety restraint device; first means for propelling the piston from a first, static position to a second position to affect a mechanical advantage in the movement of the safety restraint device.
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Specification