Pneumatic fastener driving tool and an electronic control system therefor
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B25C-001/04
출원번호
US-0790009
(1997-01-28)
발명자
/ 주소
Moorman Charles J.
Diersing James J.
Hwang Shin-Leei
출원인 / 주소
Senco Products, Inc.
대리인 / 주소
Litzinger
인용정보
피인용 횟수 :
55인용 특허 :
0
초록▼
An electronically controlled pneumatic fastener driving tool. The tool is of the type having a body containing a cylinder with a piston/driver assembly therein, a firing valve actuable to introduce high pressure air into the cylinder to cycle the piston/driver assembly, a manual trigger, a safety tr
An electronically controlled pneumatic fastener driving tool. The tool is of the type having a body containing a cylinder with a piston/driver assembly therein, a firing valve actuable to introduce high pressure air into the cylinder to cycle the piston/driver assembly, a manual trigger, a safety trip, and an electronic control system. The electronic control system comprises a remote solenoid valve to actuate the firing valve, a microprocessor having inputs from at least the trigger and safety trip and an output to energize the solenoid of the remote valve to cycle the tool, a battery to energize the microprocessor and a rechargeable battery to energize the solenoid of the remote valve. The microprocessor determines the mode of operation of the tool and may be designed to provide two or more modes selectable by a mode selection switch. The input from the trigger is provided with a reed switch closable by the trigger and the input from the safety trip is provided with a reed switch closable by the safety trip. The microprocessor may provide a timer to impose a time limit on the trigger, the safety trip, or both. The electronic control system comprises a part of the tool itself. The tool is provided with a generator which partially recharges the solenoid battery during each cycle of the tool.
대표청구항▼
[ What is claimed:] [1.] An electronically controlled pneumatic fastener driving tool, said tool comprising a body containing a cylinder having an open top with a piston/driver assembly reciprocally mounted therein, a main valve above said cylinder top and shiftable between a normal cylinder top clo
[ What is claimed:] [1.] An electronically controlled pneumatic fastener driving tool, said tool comprising a body containing a cylinder having an open top with a piston/driver assembly reciprocally mounted therein, a main valve above said cylinder top and shiftable between a normal cylinder top closing position and a retracted cylinder top opening and piston/driver actuating position, a reservoir within said tool body connected to a source of air under pressure, a volume within said body above said main valve, an electronic control comprising a solenoid actuated remote valve, said remote valve being ported when unactuated by said solenoid to connect said volume above said main valve to said reservoir to maintain said main valve in said cylinder top closing position, said remote valve being ported when actuated by said solenoid to connect said volume above said main valve to exhaust to shift said firing valve to said cylinder top open position to cycle said tool, said remote valve having ends open to atmosphere, said remote valve having an upper portion with passages therein operatively connected to said volume above said main valve, said upper valve portion having passages therein connected to said reservoir, a spool mounted within said remote valve upper portion for axial movement therein and having a plurality of annular peripheral seals thereon, said seals being so positioned that when said spool is in its normal lower position, to which it is biased, the volume above said main valve is connected to high pressure air from said reservoir and sealed from atmosphere, and when said spool is in its actuated position said volume above said main valve is connected to atmosphere and sealed from high pressure air from said reservoir, said remote valve having a lower portion, said lower portion being sealed from said upper portion by one of said spool seals when said spool is in either of its normal and actuated positions, a solenoid coil assembly including a solenoid rod having a free end provided with a solenoid plunger, said solenoid coil assembly being located in said lower valve portion, a first valve seat in said lower valve portion below said spool connected to a passage to said reservoir, a second valve seat in said lower portion below said spool connected to a passage system to atmosphere, said solenoid rod having a normal unactuated position wherein said solenoid plunger closes said first seat and opens said second seat exposing the lower end of said spool to atmosphere, said solenoid rod having an actuated position when said solenoid coil assembly is actuated by a microprocessor wherein said solenoid plunger opens said first seat and closes said second seat exposing said lower end of said spool to high pressure air from said reservoir and shifting said spool to its actuated position.
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이 특허를 인용한 특허 (55)
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