초록 ▼

A pneumatic hand tool comprises a tool body communicable with an operating air source, a pneumatic motor supported by the tool body, and a control valve for controlling air flow to the motor. When the control valve is in an open condition the motor is operated to drive the tool. When the valve is in

A pneumatic hand tool comprises a tool body communicable with an operating air source, a pneumatic motor supported by the tool body, and a control valve for controlling air flow to the motor. When the control valve is in an open condition the motor is operated to drive the tool. When the valve is in a closed condition it cuts off the supply of operating air to the motor. In the closed condition the control valve communicates with air at ambient atmospheric pressure so that source air leaking from the control valve is vented away from the motor to preclude unintended motor operation.

대표청구항 ▼

A pneumatic hand tool comprises a tool body communicable with an operating air source, a pneumatic motor supported by the tool body, and a control valve for controlling air flow to the motor. When the control valve is in an open condition the motor is operated to drive the tool. When the valve is in

A pneumatic hand tool comprises a tool body communicable with an operating air source, a pneumatic motor supported by the tool body, and a control valve for controlling air flow to the motor. When the control valve is in an open condition the motor is operated to drive the tool. When the valve is in a closed condition it cuts off the supply of operating air to the motor. In the closed condition the control valve communicates with air at ambient atmospheric pressure so that source air leaking from the control valve is vented away from the motor to preclude unintended motor operation. 5539325, 19960700, Rostoker et al.; US-5550482, 19960800, Sano; US-5555422, 19960900, Nakano; US-5559444, 19960900, Farnworth et al.; US-5559446, 19960900, Sano; US-5561594, 19961000, Wakefield; US-5568056, 19961000, Ishimoto; US-5570032, 19961000, Adkins et al.; US-5585282, 19961200, Wood et al.; US-5585737, 19961200, Shibata; US-5601740, 19970200, Eldridge et al.; US-5616953, 19970400, King et al.; US-5640762, 19970600, Farnworth et al.; US-5648661, 19970700, Rostoker et al.; US-5665654, 19970900, Stansbury; US-5726580, 19980300, Wood et al.; US-5756370, 19980500, Farnworth et al.; US-5772451, 19980600, Dozier, II et al.; US-5783461, 19980700, Hembree; US-5806181, 19980900, Khandros et al.; US-5917707, 19990600, Khandros et al.; US-5974662, 19991100, Eldridge et al.; US-6029344, 20000200, Khandros et al.; US-6336269, 20020100, Eldridge et al.