Importance

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Abstract

A first conveyance arrest system includes a conveyance arrest cylinder comprising a piston rod mechanically coupled a trolley receiver. The trolley receiver engages a conveyance trolley, displaces the piston rod and pressurizes a working fluid within the conveyance arrest cylinder. The conveyance arrest cylinder comprises a port that vents pressurized fluid within the conveyance arrest cylinder and provides a vent resistance to fluid escaping the conveyance arrest cylinder. A second conveyance arrest system includes a conveyance trolley slideably coupled to a conveyance guide, and a conveyance arrest cylinder mechanically coupled to the conveyance trolley. The second conveyance arrest system also includes a conveyance stop configured to engage a stop engagement end of a piston rod and thereby pressurize fluid within the conveyance arrest cylinder in response to movement of the trolley toward the conveyance stop.

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First Claim