Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...
Patent
1988-02-09
1989-03-28
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Separable-fastener or required component thereof
Including member having distinct formations and mating...
24603, 280801, A44B 1125, B60R 2110
Patent
active
048151777
ABSTRACT:
An automatic release buckle assembly including a mating buckle and latch tongue. A resiliently biased tongue latch engages the latch tongue to prevent withdrawal of the latch tongue from the buckle. A manually operable release mechanism is provided for causing the tongue latch to disengage the latch tongue to permit withdrawal of the latch tongue from the buckle. An automatic release device causes the tongue latch to disengage the latch tongue and includes an element movable between first and second positions where in the second position the tongue latch is disengaged from the latch tongue. A support is provided for supporting the movable element in the first position and a resilient element is provided for urging the movable element from the first position to the second position when the movable element becomes unsupported in the first position. An actuating mechanism connected to a portion of the safety belt causes the movable element to become unsupported in the first position in response to tension in the safety belt in excess of a predetermined limit. A timing element is provided for retarding movement of the movable element from the first position to the second position. The timing element includes a first variable volume chamber containing a fluid and engaging the movable element. The fluid is pressurized as the movable element moves from the first position to the second position. A second variable volume chamber is in flow communication with the first variable volume chamber and hermetically sealed therewith. A porous element is disposed between the first and second variable volume chambers, the porous element having a multitude of tortuous flow paths therethrough and serving as a flow restrictor which is not readily obstructed by contaminants in the fluid.
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Jeffers Albert L.
Robinson Richard L.
Sakran Victor N.
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