Variable volume valve for a combustion powered tool

(19)

(11)

EP 1 254 745 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	15.08.2007 Bulletin 2007/33

(43)	Date of publication A2:
	06.11.2002 Bulletin 2002/45

(21)	Application number: 02291089.7

(22)	Date of filing: 30.04.2002

(51)

International Patent Classification (IPC):

B25C 1/08^(2006.01)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

04.05.2001 US 849706
09.10.2001 US 973103

(71)	Applicant: ILLINOIS TOOL WORKS INC.
	Glenview, Cook County, Illinois 60025 (US)

(72)	Inventors:
	Shklonikov, Yury Glenview, Illinois 60025 (US) Deieso, Tony Wadsworth, Illinois 60083 (US) Taylor, Walter J. McHenry, Illinois 60050 (US)

(74)	Representative: Bloch, Gérard et al
	Cabinet Bloch & Associés 23bis, rue de Turin 75008 Paris 75008 Paris (FR)

(54)	Variable volume valve for a combustion powered tool

(57) A variable volume metering chamber (24) and valve assembly for a combustion-powered tool includes a housing (12) defining a metering chamber (24) having an internal volume and including an inlet (20) and an outlet (22), and a plunger (122) configured for reciprocal movement relative to the chamber for adjusting the internal volume of the metering chamber. The plunger (122) is preferably adjustable by the user to alter the volume of fuel retained in the metering chamber. In the housing, a first valve (16) controls control fluid flow through the inlet, a second valve (18) controls fluid flow through the outlet, and an actuator assembly (60), connected to the valves, is sequentially operable from a first position, in which the first valve (16) is open and the second valve (18) is closed, to a second position, in which the first and second valves are both closed, and a third position, in which the first valve is closed and the second valve is open.

Search report