F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/173
F16H 61/06 (2006.01) F16D 48/02 (2006.01)
Patent
CA 1181966
DOUBLE ACTING HYDRAULIC ACCUMULATOR FOR POWER SHIFT TRANSMISSION ABSTRACT OF THE DISCLOSURE A double acting hydraulic accumulator in a power shift transmission comprising, a source of pres- surized fluid and a modulating valve, a first and a second accumulator each including a first and a second piston axially aligned in a single cylinder with each piston defining a pressurizing chamber with the accum- ulator, resilient means positioned in a spring chamber between the pistons biasing the pistons to a minimum volume position of the pressurizing chambers, the first accumulator defining a passage connected to the pres- surizing chamber and through the modulating valve to the source of pressurized fluid and a control valve, the second accumulator defining a passage connected to the pressurizing chamber and through the modulating valve to the source of pressurizing fluid and a control valve, a valve in each of the pistons blocking fluid flow from the pressurizing chamber into the spring chamber and permitting flow from the spring chamber to the pres- surizing chamber, the valve alternately causing the accumulator to operate as an accumulator responsive to application of pressure in the pressurizing chamber and permitting flow from the spring chamber to the pressurizing chamber when pressurizing chamber when pressure is relieved.
405373
Ballendux Gerardus M.
Mccormick Stephen J.
Allis-Chalmers Corporation
Swabey Ogilvy Renault
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