Log truck scale pad and pop-off valve

Details Log truck scale pad and pop-off valve Log truck scale pad and pop-off valve

G - Physics

01

G

265/2

G01G 19/10 (2006.01) G01G 5/00 (2006.01) G01G 5/04 (2006.01)

Patent

CA 1101000

ABSTRACT OF THE DISCLOSURE A horizontal table is provided including a depending central support portion for rigid support from a vehicle mounting portion. An upper top plate including a downwardly directed peripheral flange is centered over the table and a diaphragm is sealingly secured to and extends between remote portions of the peripheral flange below the top plate and overlies and is sup- ported from the table. The top plate and table include coacting structure guiding the top plate from the table for vertical move- ment relative thereto, limited horizontal shifting relative thereto and limited canting in all directions about a central zone of the table. A vertically elongated pop-off valve assembly is sealingly secured through a central portion of the table and includes and upwardly projectable piston plunger engageable with the underside of the top plate in response to the valve assembly being charged at its lower end and the assembly includes structure operative to vent the assembly to the ambient atmosphere in re- sponse to upward movement of the plunger to a predetermined level and to close the assembly against venting to the ambient atmo- sphere upon lowering of the plunger below the aforementioned predetermined level.

304558

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