IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0610788
(1996-03-11)
|
| 우선권정보 |
IT-0000518 (1995-11-02) |
|
발명자
/ 주소 |
- Ronconi Marco (Bologna ITX)
|
| 출원인 / 주소 |
- Fasco S.p.A. (Cardriano Di Granarolo Emilia ITX 03)
|
| 인용정보 |
피인용 횟수 :
34 인용 특허 :
0 |
초록
▼
The compressed-air nail firing tool with head valve operates with single firing or repeat firing through valves comprising a selector, a distributor, and a shunt valve that can be operated through a trigger. The selector has two positions that can be selected from the outside by the user actuating a
The compressed-air nail firing tool with head valve operates with single firing or repeat firing through valves comprising a selector, a distributor, and a shunt valve that can be operated through a trigger. The selector has two positions that can be selected from the outside by the user actuating a lever and correspond to single-firing or repeat-firing operation.
대표청구항
▼
A compressed-air nail firing tool with head valve, operating by single firing and repeat firing through a selector, said tool comprising: a body that is composed of a head, said head enclosing a cavity that is closed at one end by a cover and, at an opposite end, by a base; a tubular handle that pro
A compressed-air nail firing tool with head valve, operating by single firing and repeat firing through a selector, said tool comprising: a body that is composed of a head, said head enclosing a cavity that is closed at one end by a cover and, at an opposite end, by a base; a tubular handle that protrudes from said head and forms a cavity, said cavity being connected to a compressed air source; a cylindrical jacket being accommodated in said cavity, said jacket forming an outer interspace; a check valve element being arranged on said jacket, said valve element allowing flow of air to pass from inside said jacket towards said interspace; a piston being guided in said jacket, said piston forming an upper chamber and a lower chamber; a striking blade, which is coupled to said piston, said blade running through said lower chamber and said base; a disk being guided in said cover coaxially to said jacket, said disk constituting said head valve, and being movable between a position for resting on said jacket, in which said upper chamber is connected to outside environment through passages of said disk and of said cover, and a position for abutment on said cover, in which said upper chamber is connected to said compressed air source, said interspace being connected to said lower chamber through slots formed in said jacket proximate to said base, said disk forming, together with said cover, a chamber that is selectively connectable to the outside and to said compressed air source; valve means for connecting said chamber to the outside and said air source; a spring acting on said disk so as to move said disk into a position for resting on said jacket; and wherein said valve means comprises: a cylindrical seat being formed in said body and being alternately selectively connectable to the outside and to said interspace through respective ducts; a shutter for controlling said ducts, which is actuatable between two positions, said shutter allowing, in one of said positions, a connection between said seat and said interspace while interrupting connection to the outside during repeat-firing operation, in a second position, the shutter interrupting connection between said seat and said interspace while allowing connection between said seat and the outside during single-firing operation; a distributor, which is composed of a piston being slideable in said seat, said piston forming a chamber into which said ducts lead; and a stem being coaxial to said piston and slideable in a sleeve, said sleeve being accommodated in said body coaxially to said seat and being connected to said seat at one end and to said cavity of said handle at an opposite end thereof, said sleeve having a first seat being connected to said chamber formed between said disk and said cover and a second seat being connectable alternately to the outside and to said cavity of the handle through a shunt valve, said shunt valve being composed of a seat formed in said body, a bush accommodated in said seat, said bush being connected, at one end thereof, to said cavity of the handle and, at an opposite end thereof, to the outside, said bush being provided with holes that are connected to said second seat of said distributor, a stem being slideable in said bush, said stem being actuated by a trigger between two positions, in a first one the stem connecting said second seat to the outside through said holes, whereas in a second one said stem connecting said second seat to said cavity of the handle.
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