Air tool with double acting valve

(19)

(11)

EP 0 209 373 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	16.08.1989 Bulletin 1989/33

(43)	Date of publication A2:
	21.01.1987 Bulletin 1987/04

(21)	Application number: 86305468.0

(22)	Date of filing: 16.07.1986

(51)	International Patent Classification (IPC)⁴: B25D 9/16

(84)	Designated Contracting States:
	AT BE CH DE FR GB IT LI LU NL SE

(30)

Priority:

19.07.1985 GB 8518265

(71)	Applicants:
	John Macdonald & Company (Pneumatic Tools) Limited East Kilbride, Glasgow G74 5LS, Scotland (GB) Allan, David Thomson Rutherglen, Glasgow G73 3QH, Scotland (GB)

(72)	Inventor:
	Allan, David Thomson Rutherglen, Glasgow G733QH (GB)

(74)	Representative: Murgitroyd, Ian G. et al
	Murgitroyd and Company 373 Scotland Street Glasgow G5 8QA Glasgow G5 8QA (GB)

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References cited: :

(54)	Air tool with double acting valve

(57) An air tool comprises a casing (1) having an internal bore (1a) and a piston (2) slidably mounted for reciprocal movement therein. The piston (2) is driven in the bore (1 a) by a fluid supply (5) controlled by valve means (3).
The valve means (3) is movable between a first position in which a drive portion (2b) of the piston (2) is in communication with the fluid supply (5) and is closed to the fluid exhaust means (141, and a second position, in which the drive portion (2b) of the piston (2) is closed to the fluid supply (5) and in communication with the fluid exhaust means (14).

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