System for weighing containers
AssigneeRacal-Chubb Canada Limited
InventorStuart D. Woodman
Life of this patent
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Abstract
Containers such as liquefied gas cylinders are weighed in situ using a balance comprising a pneumatic actuator connected between a support temporarily installed above a container to be weighed and the container itself. Gas pressure is applied to the actuator to lift the container off the surface on which it is standing, and the pressure required to hold it off that surface is measured to indicate the weight of the container. A limiting valve is associated with the actuator so as to limit pressure therein to that required to lift the container.
Claims5
Apparatus for determining the weight of containers supported on a surface, comprising a fluid operated actuator having opposite end portions drawn together by the application of fluid pressure to the actuator, a beam for placement above a container to be weighed, means connecting one end portion of the actuator to the beam, means for releasably connecting the other end portion of the actuator to said container, a source of pressurized fluid connected to the actuator, and means to indicate the pressure of fluid within the actuator when the actuator is acting on the beam and the container to hold the latter clear of the surface, whereby to indicate the weight of the container, and means to support the beam at at least one end on a further container similar to that to be weighed.
Dependencies are inferred from the claim text.