LOAD TRANSPORTATION SUPPORT MODULE Russian patent published in 1995 - IPC

FIELD: materials handling facilities. SUBSTANCE: load transportation support module has housing 1 accommodating working piston 2 which divides housing space into low pressure chamber and high pressure chamber connected with working agent source, power rod with thrust threaded end 6 connected with working piston, and sealing flexible collar secured on lower end face of housing by means of shoe. Lower web of collar engages through its lower surface with support plate. Collar has boss with conical upper surface arranged in high pressure chamber. According to invention at least one concentric groove is made on surface of boss engaging with support plate. Width of boss is found from equation given in description of invention. EFFECT: enlarged operating capabilities. 2 dwg