Internal-combustion engines – Free piston – Single chamber; one piston
Patent
1991-07-12
1993-03-09
Wolfe, Willis R.
Internal-combustion engines
Free piston
Single chamber; one piston
227 10, F02B 7504, F02B 2104, F02B 7104, B25C 108
Patent
active
051918617
ABSTRACT:
An internal combustion actuated fastener driving device in which a simple container supply of fuel under pressure carried in a handle portion of the portable housing assembly feeds to a supply chamber controlled by an actuating valve operable in response to a manual acuating procedure to be spring moved into an operative position. The movement of the actuating valve into its operative position communicates a previously formed charge of gaseous fuel under pressure in a separate charge chamber with a series of nozzles so as to discharge in jet stream formations which aspirate fresh air through inlets to mix therewith in a mixing chamber for passage into a combustion chamber in open condition controlled by a main valve. The main valve moves under spring bias into a closed position in response to the depletion of gaseous fuel pressure within the charge chamber in timed relation with the crowding of the spent gases from the combustion chamber by the new combustible mixture. Ignition is in response to the closing of the main valve by a piezoelectric unit. The piston is driven by the energy of the combustion of mixture which initially is at generally atmospheric pressure. The return stroke of the piston is effected by a spring system which is active only at the end of the drive stroke and beginning of the return stroke.
REFERENCES:
patent: 2898893 (1959-08-01), Rohrer
patent: 3042008 (1962-07-01), Liesse
patent: 4200213 (1980-04-01), Liesse
patent: 4365471 (1982-12-01), Adams
patent: 4377991 (1983-03-01), Liesse
patent: 4403722 (1983-09-01), Nikolich
patent: 4480611 (1984-11-01), Wendt
patent: 4483280 (1984-11-01), Nikolich
patent: 4483473 (1984-11-01), Wagdy
patent: 4483474 (1984-11-01), Nikolich
patent: 4522162 (1985-06-01), Nikolich
patent: 4665868 (1987-05-01), Adams
patent: 4739915 (1988-04-01), Cotta
patent: 4773581 (1988-09-01), Ohtsu et al.
patent: 4821683 (1989-04-01), Veldman
patent: 5090606 (1992-02-01), Torii et al.
Kellerman Rudolph J.
La Barre Leo E.
Lemos Walter G.
Perra Arthur E.
Stanley-Bostitch Inc.
Wolfe Willis R.
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