Pneumatic Ratchet Wrench and Outer Shell Thereof
AssigneeBasso Industry Corp.
InventorsSan-Yih Su, Cheng-Wei Lai
Life of this patent
Estimating the term…
Abstract
A pneumatic ratchet wrench includes a main body formed with a receiving chamber, a head unit, a driving unit and an air motor. The head unit defines a gas passage, and includes a ring portion and a frame portion. The ring portion includes an exit in spatial communication with the gas passage and opens toward the frame portion. The driving unit includes a driving head, and a transmission shaft mounted in the head unit. The air motor drives the transmission shaft and includes a cylinder and a rotor. The cylinder includes a venting hole allowing gas produced in the cylinder to pass through the venting hole and the gas passage and to exit from the exit to be blown toward the frame portion.
Claims25
A pneumatic ratchet wrench comprising:
- a main body including a receiving chamber that extends along a central axis;
- a head unit defining at least one gas passage, said head unit including a ring portion detachably connected to said main body, and a frame portion extending from said ring portion of said head unit in a direction parallel to the central axis and away from said main body, said ring portion of said head unit including at least one exit that is in spatial communication with said gas passage and that opens toward said frame portion;
- a driving unit including a driving head that is rotatably mounted to said frame portion and that is rotatable about a rotating axis perpendicular to the central axis, and a transmission shaft that is mounted in said head unit, that extends along a direction parallel to the central axis, and that transmits a driving force to said driving head;
- and
- an air motor disposed in said receiving chamber of said main body, pneumatically driving said transmission shaft and including a cylinder and a rotor, said cylinder including a venting hole that allows gas produced in said cylinder to pass through said venting hole and said gas passage and to exit from said exit to be blown toward said frame portion.
An outer shell of a pneumatic ratchet wrench, the pneumatic ratchet wrench including a driving unit and an air motor, the driving unit including a driving head and a transmission shaft that transmits a driving force to the driving head, the air motor including a cylinder and a rotor that is pneumatically driven by the cylinder to drive the transmission shaft, the cylinder including at least one venting hole, said outer shell comprising:
- a main body including a receiving chamber that extends along a central axis, that is adapted for receiving the air motor, and that is adapted for receiving gas produced in the cylinder;
- and
- a head unit detachably connected to said main body, adapted for the transmission shaft to be mounted therein, and defining at least one gas passage, said head unit including a ring portion that is opposite to said main body, and a frame portion that extends from said ring portion of said head unit in a direction parallel to the central axis and away from said main body and that is adapted for the driving head to be rotatably mounted thereto, the driving head being rotatable about a rotating axis perpendicular to the central axis, said ring portion of said head unit including at least one exit that is in spatial communication with said gas passage and that opens toward said frame portion, said gas passage guiding the gas produced in the cylinder to be discharged from said venting hole to exit from said exit and to be blown toward said frame portion.
Dependencies are inferred from the claim text.