Patent ID: 9032862
Filing Date: 2015-05-19
Classification: F15B

Abstract:
1. A rotating cylinder, comprising: a cylinder body defining a receiving chamber; a piston movably received in the receiving chamber; a piston shaft assembly movably received in the receiving chamber, connected with the piston at one distal end, and defining at least one guiding groove lengthwise thereof; each guiding groove comprising a spiral portion and an extending portion extending from the spiral portion and communicating with the spiral portion, the spiral portion positioned adjacent to the piston; a main shaft non-rotatably connected to the piston shaft assembly away from the piston and exposed out of the cylinder body; a guiding assembly sleeving on the piston shaft assembly, slidably connected with the at least one guiding groove and positioned between the main shaft and the piston; wherein the main shaft is driven to rotate around an axis of the piston shaft when the guiding assembly slidably engages with the spiral portion, and to move lengthwise thereof when the guiding assembly is slidably connected with the extending portion.