Patent ID: 9181929
Filing Date: 2015-11-10
Classification: F03G,F15B

Abstract:
1. An actuator with an efficient energy accumulation, comprising of a protruding shaft suitable for connecting with a driven valve and capable of rotating bi-directionally substantially by 90 degree, by a rack and pinion arrangement, driven by a plurality of pistons pushed by a pressurized fluid on one side and assembly of resisting energy accumulator system on the other side; the energy accumulator system characterized in that: a cartridge comprising a progressively varying diameter compression spring having a minimum diameter end and a maximum diameter end pre compressed by said ends connected through a telescopic arrangement; an axis of the progressively varying diameter compression spring, substantially remains a straight line in all conditions of compression; each spring turn of the progressively varying diameter compression spring does not entangle and disentangle, allowing a noise free accumulation and release of energy; a construction having a raised boundary or a recession provided at decided locations on a piston side and an actuator cover to retain the cartridge ends; and a group of said cartridges retained by the construction provided on the piston side and the actuator cover, substantially in a circle or in any other formation.