John A Melenric

51898756, Mar 2, 1993

Sep 10, 1990

7/580184

John A. Melenric - Houston TX

F02K 7067

60249

A self starting valved pulse jet particularly adapted to power pilotless aircraft in the subsonic speed range. This invention is somewhat related to my U. S. Pat. No. 3,823,554. The device continues to utilize a substantially cylindrical combustion chamber, a reduction cone and exhaust tube. The multiplicity of reverse flow air and fuel inlet tubes projecting through the reduction cone into the combustion chamber have been modified so each air and fuel inlet utilizes two tubes axially aligned with each other. The aft tube diameter is less than the forward tube. An opening between the tubes permits gas to flow to and from an annular plenum chamber surrounding the air inlet tubes. The plenum chamber also houses an equal number of shrouded valve assemblies in its outer wall. The small aft tube of the air and fuel inlet secures and penetrates through the aft annular wall of the plenum chamber. The aft end of the small diameter tube contains a one-way flow valve permitting air to flow through it only during engine start.

56389876, Jun 17, 1997

Feb 22, 1994

8/199643

John A. Melenric - Houston TX

B67D 500

222 3

A throttling and cut-off valve providing fuel control for heaters, blow torches, lanterns and small engines utilizing the approximately one pound throwaway propane bottles in common use as a fuel supply. The invention provides one valve integral to the quick disconnect housing of the throwaway bottle that will suffice for all implements utilizing these bottles. The invention incorporates a cap with female threads compatible with the male threads of the quick disconnect housing which is an integral part of the fuel bottle. The cap is rotatably secured to a fuel probe that penetrates the center of the housing and a seated O-ring opening the spring loaded tire valve secured to the upstream end of the housing. Rotating the cap and inserting it into this quick disconnect housing secures the cap and probe to the bottle; rotating the cap further moves the probe forward causing fuel to flow through the probe and fuel line into the implement. The cap thus becomes a throttling valve for the attached implement.