Bs&b Safety Systems, Inc.

Other

Ronald J LaPelle

Arnold L Mundt

Charles E Beair

Leo J Naumann

Sam A Ou

Wesley Barrow

Alan T Roberts

The present invention relates to a collapsing jack stand for lifting off road vehicles, heavy equipment, boats, recreational vehicles, trailers, etc. The invention has a saddle for receiving an axel of a piece of equipment that is to be lifted by the stand. The saddle is adjustable in height and is supported above the ground by an upright member mounted on a base, with a brace member helping to support the upright member on the base. The collapsing jack stand is designed to be pivoted downward and folded into a flattened configuration when not in use, making it easy to store in a limited space. Only one bolt must be removed to collapse the jack stand.

Collapsing jack stand

Pressure relieving fluid containers which provide a controlled rupture and pressurized fluid release when the pressure exerted on the container reaches a predetermined level. A substantially frustum-shaped indentation is included in a wall of the container and at least one score is formed on the part of the wall containing the indentation defining a rupture detachable blowout area. The frustum-shaped indentation is of a size with respect to the thickness of the wall containing it whereby when a predetermined fluid pressure is exerted on the wall, the indentation inverts and tears along the line of weakness created by the score thereby opening the portion of the wall corresponding to the blowout area and relieving fluid pressure therethrough.

Rupturable pressure relieving fluid containers

An improved reverse buckling rupture disk apparatus which includes a reverse buckling rupture disk, an annular rupture disk support member and knife structure for severing the rupture disk upon the reversal thereof. The knife structure are comprised of at least three blade legs having sharpened cutting edges formed thereon facing the rupture disk attached together at the internal ends thereof and attached to or supported by the annular support member at the external ends thereof. Each of the blade legs has at least a portion of the cutting edge thereof inclined towards the rupture disk from the internal end to the external end thereof whereby upon reversal of the rupture disk, the rupture disk is progressively severed by the cutting edges of the blade legs from points near the periphery of the reversing portion of the rupture disk to the center of the rupture disk.

Reverse buckling rupture disk apparatus

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Tulsa, OK, United States of America

Ronald J LaPelle