A compact pneumatic hand tool composed of a body, a cylinder assembly, a sealing pad, a striking assembly, a front cap, a control knob, a ventilation cap and threaded bolts. A first bearing is mounted around a rear end of the striking assembly and an outer rim of the first bearing is securely receiv
A compact pneumatic hand tool composed of a body, a cylinder assembly, a sealing pad, a striking assembly, a front cap, a control knob, a ventilation cap and threaded bolts. A first bearing is mounted around a rear end of the striking assembly and an outer rim of the first bearing is securely received in a central hole of the cylinder assembly. A second bearing is mounted on a central shaft of the rotor in the cylinder assembly. The control knob is mounted on the cylinder assembly. A front end of the central shaft of the striking assembly extends out of a front cap and the body is connected to the front cap via threaded bolts so that the striking assembly and the cylinder assembly are sealingly enclosed between the front cap and the body to accomplish the compact and light-weight requirements.
대표청구항▼
What is claimed is: 1. A pneumatic hand tool consisting essentially of: a hollow body having a space in a front portion thereof, a control knob mounting portion and a threaded bolt extension portion both defined in a closed rear end of the body and a handle extending downward therefrom and provided
What is claimed is: 1. A pneumatic hand tool consisting essentially of: a hollow body having a space in a front portion thereof, a control knob mounting portion and a threaded bolt extension portion both defined in a closed rear end of the body and a handle extending downward therefrom and provided with a connection portion at a bottom face of the handle; a cylinder assembly composed of a cylinder, a rotor, a front cover, a first bearing, a second bearing, a airtight seal and a resilient control assembly, wherein the cylinder is provided with a first leakproof portion, a second leakproof portion, a rotor receiving recess to receive therein the rotor and a rotor receiving chamber, the rotor has a front shaft extending through the front cover to have the first bearing mounted therearound and provided with a first coupling portion formed on the front shaft, a rear shaft oppositely extending relative to the front shaft and through the rear side of the cylinder to have the second bearing mounted therearound, the font cover is securely connected to the cylinder so as to allow the cylinder assembly to be received in the space of the body; a sealing pad mounted between the body and a front cap to allow the body to engage with the front cap in a airtight manner; a striking assembly having a central axle extending from a first side thereof and a second coupling portion extending from a second side thereof opposite to the first side to couple with the first coupling portion of the front shaft; a front cap having a through hole defined in a front portion thereof to allow extension of the central axle of the striking assembly and apertures defined around a side face of the front cap such that when the front cap is connected to the body, threaded bolts are able to extend through threaded bolt extension portion of the body and the apertures of the front cap to secure engagement between the body and the front cap; a control knob mounted at the control knob mounting portion of the body and having a leak prevention portion with a leak seal to ensure that engagement between the control knob and the body is airtight; and an exhaust cap with a coupling portion corresponding to and engaged with the connection portion of the handle of the body so that the pneumatic hand tool is compact and lightweight. 2. The pneumatic hand tool as claimed in claim 1, wherein the cylinder has a rear inlet opening, a first inlet, a second inlet, a first exhaust opening, a second exhaust opening, a first inlet passage, a second inlet passage, a bottom inlet opening and an air intake, wherein the first inlet and the second inlet respectively communicate with the first inlet passage and the second inlet passage, the bottom inlet opening communicates with the rear inlet opening via the air intake. 3. The pneumatic hand tool as claimed in claim 1, wherein the control knob has a stop recess corresponding to the resilient control assembly receiving recess of the cylinder to sandwich the resilient control assembly therebetween, an air inlet, a first air exhaust hole, a second air exhaust hole and a leak prevention portion with a leak seal such that after the control knob is mounted at the control knob mounting portion, the leak seal is able to prevent any leakage between the control knob and the body.
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Lin Chen-Yang,TWX, Air cylinder apparatus for a pneumatically driven power tool.
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