A compact pneumatic hand tool having a cylinder assembly received in a space of a body, wherein, the bottom inlet opening of the cylinder assembly is communicated with the air inlet in the space, meanwhile, the rear inlet passage of the cylinder assembly is corresponded to the control knob mounting
A compact pneumatic hand tool having a cylinder assembly received in a space of a body, wherein, the bottom inlet opening of the cylinder assembly is communicated with the air inlet in the space, meanwhile, the rear inlet passage of the cylinder assembly is corresponded to the control knob mounting portion of the body. Moreover, a control knob is extended through the control knob mounting portion of body as well as the rear inlet passage of the cylinder assembly, and a rotor of the cylinder assembly is coupled with a second coupling portion of a striking assembly. In addition, the front opening of the body is covered with the front cap and a sealing pad is provided between the body and the front cap, meanwhile the central axle is extended out of the front cap. With the existence of the sealing pad between the boy and the front cap, the cylinder assembly, the control knob and the striking assembly and are sealingly sealed between the front cap and the body, which enhances the airtight capability and the convenience of use.
대표청구항▼
What is claimed is: 1. A pneumatic hand tool consisting essentially of: a body having a space defined in a front portion thereof, an air inlet positioned in the space and a closed rear end of the body provided with a control knob mounting portion; a cylinder assembly, which is composed of a cylinde
What is claimed is: 1. A pneumatic hand tool consisting essentially of: a body having a space defined in a front portion thereof, an air inlet positioned in the space and a closed rear end of the body provided with a control knob mounting portion; a cylinder assembly, which is composed of a cylinder, a rotor and a front cover; wherein, the cylinder is further composed of a receiving chamber, an inlet opening, a rear inlet passage and a bottom inlet opening; the rear inlet passage is corresponded to the control knob mounting portion of the body, and the bottom inlet opening is communicated with the air inlet which is situated in the space of the body; a rotor receiving chamber is defined to receive therein the rotor, and a front cover is mounted on the front opening of the cylinder; the rotor has a front shaft provided with a first coupling portion, and the cylinder assembly is received in the space of the body; a control knob, which is composed of an air plug and an adjustment knob, wherein the air plug is extended through the control knob mounting portion of the closed rear end as well as the rear inlet passage of the cylinder, and extended out of the inlet opening of the cylinder; the adjustment knob is coupled with the control knob mounting portion of the closed rear end, and the end of the air plug is also coupled with the adjustment knob tightly; a striking assembly has a central axle extending from a first side thereof and a second coupling portion extending a second side thereof opposite to the first side to couple with the first coupling portion of the front shaft; and a front cap, which is covered to the front opening of body having a through hole which allows the central axle of the striking assembly to extend therethrough. 2. The pneumatic hand tool as claimed in claim 1, wherein the body further comprises multiple inserting holes which are provided for the fasteners to insert the holes; the front cap further comprises multiple apertures which are corresponded to the inserting holes of the body, to allow the extension of the fasteners after extending through the inserting holes of the body and apertures of the front cap to secure the engagement between the front cap and the body. 3. The pneumatic hand tool as claimed in claim 2, wherein the fasteners are the thread bolts. 4. The pneumatic hand tool as claimed in claim 1, wherein the cylinder is further composed of an inner teething stopper, a front exhaust opening and a middle exhaust opening, wherein the inner teething stopper is situated at the front end of the inlet opening, and the front exhaust opening and the middle exhaust opening are situated between the inlet opening and the rear inlet passage. 5. The pneumatic hand tool as claimed in claim 1, wherein the cylinder is further composed of a left inlet and a right inlet, wherein the left inlet and the right inlet are situated at the two sides of the bottom inlet opening; a airtight screw is provided in the left inlet and right inlet respectively, which is used for sealing the air of both inlets. 6. The pneumatic hand tool as claimed in claim 1, wherein a first leakproof portion is assembled to the rear inlet passage and the first leakproof portion has a airtight seal; when the rear inlet passage is corresponded to the control knob mounting portion of the body, the airtight seal of the first leakproof portion is sealingly sealed between the rear inlet passage and the closed rear end of the body. 7. The pneumatic hand tool as claimed in claim 1, wherein a second leakproof portion is assembled to the bottom inlet opening and the second leakproof portion has a airtight seal; when the bottom inlet opening is communicated with air inlet of the body, the airtight seal of the second leakproof portion is sealingly sealed between the bottom inlet opening and the air inlet of the body. 8. The pneumatic hand tool as claimed in claim 1, wherein a rear shaft is extended from a rear side of the rotor and opposite to the front shaft; the front shaft extends through the front cover to have the first bearing mounted therearound and the rear shaft extends through the cylinder to have the second bearing mounted therearound. 9. The pneumatic hand tool as claimed in claim 1, wherein a sealing pad is sealed between the front cap and the body. 10. The pneumatic hand tool as claimed in claim 1, wherein an air plug stopper is situated under the through hole of the front cap which is used for stopping the control knob to extend out of the cylinder, and the air plug stopper has a leakproof O-ring.
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이 특허에 인용된 특허 (11)
Nelson James W. (Union Grove WI) Zuzinec Raymond R. (Kenosha WI) Foster Michael L. (Kenosha WI), Control mechanism for a pneumatic tool.
Spooner Jeffrey J. (West Winfield NY) Wallace William Keith (Barneveld NY) Ingersoll Harley (Holland Patent NY) Kazamaki Yutaka (New Hartford NY), Power hand tool with rotatable handle.
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