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[CN 201780068956.7] Pneumatic or hydraulic mechanism
[CN 201780068956.7] Title of Pneumatic or Hydraulic Mechanism: Application Number of Pneumatic or Hydraulic Mechanism: CN 201780068956.7 Applicant: S Garn Co., Ltd. Application Date: 2017-10-11 Patent Type: Application for Invention A Pneumatic or Hydraulic Mechanism has a Shell, which defines a piston cavity and has a fluid inlet. The piston is slidable in the piston chamber. The piston divides the piston chamber into a front chamber and a rear chamber. The piston has one or more passageways for fluid communication between the rear chamber and the front chamber, the one or more passageways being sealed by a sealing mechanism. The sealing mechanism has a sealed state in which the sealing mechanism substantially prevents fluid communication between the rear cavity and the front cavity, and an unsealed state in which the sealing mechanism permits fluid communication between the rear cavity and the front cavity. The piston is slidable between a first position and a second position. When the piston is in the first position, the sealing mechanism is in a sealed state. Upon supply of fluid to the inlet, the fluid urges the piston toward its second position and then causes the sealing mechanism to become unsealed until the pressures in the rear and front chambers are equalized, thereby allowing the sealing mechanism to return to the sealed condition. Upon removal of the fluid from the rear chamber, the fluid in the front chamber urges the piston to return to its first position.
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