Patent ID: 8313310

Claim:
A variable displacement swash plate compressor comprising: a swash-plate boss permitting a rotary shaft to extend therethrough and coupled to the rotary shaft such that the swash-plate boss is tiltable relative to the rotary shaft, the swash-plate boss having a thread groove cut in an outer peripheral surface thereof; an annular swash plate fitted around the swash-plate boss; a nut screwed on the thread groove of the swash-plate boss to fix the swash plate to the swash-plate boss; a conversion device for converting rotational motion of the swash plate to reciprocating motion of pistons; and engaging protuberances formed integrally with the nut and protruding in a direction parallel with an axis of the nut to be engaged with a tool for turning the nut, the engaging protuberances being arranged at regular intervals in a circumferential direction of the nut.