Patent ID: 6038767
Filing Date: 2000-03-21
Classification: F04B,Y10T

Abstract:
A method for assembling a piston assembly, the piston assembly including a rotating shaft having a swash plate thereon, a plurality of pistons engaged with a peripheral edge of the swash plate, and a pair of shoes disposed in a notch formed in each of the pistons at a central portion of the piston, each of the pair of shoes being slidably engaged respectively with a front-side surface and a rear-side surface of the swash plate, wherein each piston is reciprocally moved in an axial direction of the rotating shaft by the respective pair of shoes when the swash plate is rotated, the method comprising the steps of:arranging said plurality of pistons in parallel with one another with a predetermined distance therebetween;moving said plurality of pistons in a circumferential direction along the peripheral edge of said swash plate, while maintaining a predetermined distance therebetween;while moving said plurality of pistons, aligning said notch with the peripheral edge of said swash plate, as each piston reaches the peripheral edge of the swash plate; andat substantially the same time as the aligning said notch with the peripheral edge of said swash plate, raising the pair of shoes to a substantially vertical position, so that the respective pair of shoes are oppositely disposed with respect to the front-side and rear-side surfaces of said swash plate and are in parallel relationship therewith.