Variable thrust device and injector

Claim 2

A FLUID METERING DEVICE COMPRISING A BODY PORTION HAVING A PAIR OF SPACED SURFACES DE FINING A FLUID PASSAGE THEREBETWEEN, SAID PASSAGE HAVING AN INLET END AND AN OUTLET END SAID SURFACES INCLUDING MEANS DEFINING A PLURALITY OF ALTERNATELY POSITIONED LANDS AND TAPERED GROOVES WITHIN SAID PASSAGE, SAID TAPERED GROOVES BEING OF MINUMUM DEPTH AT A POSITION ADJACENTLY SPACED FROM SAID OUTLET END, A POPPET ADAPTED FOR MOVEMENT WITHIN SAID PASSAGE, AND METERING CONTROL MEANS CARRIED BY SAID POPPET AND ADAPTED TO CONTACT SAID SURFACES TO COVER AND UNCOVER VARYING AMOUNTS OF SAID GROVES AS SAID POPPET IS MOVED,

Claim 3

IN A VARIABLE THRUST DEVICE HAVING A THROAT, A COMBUSTION CHAMBER, A NOZZLE EXTENDING FROM THE COMBUSTION CHAMBER; A VARIABLE PROPELLANT INJECTOR, SAID INJECTOR COMPRISING PASSAGE MEANS COMMUNICATING WITH THE COMBUSTION CHAMBER OPPOSITE THE NOZZLE, A PLURALITY OF SPACED LANDS DISPOSED LONGITUDINALLY WITHIN SAID PASSAGE MEANS AND FORMING A PORTION OF SAID PASSAGE MEANS, MEANS DEFINING A PLURALITY OF TAPERED GROOVES BETWEEN SAID LANDS, SAID GROOVES BEING OF A MINIMUM DEPTH AT A POSITION NEAREST THE COMBUSTION CHAMBER, A POPPET MOVABLY DISPOSED WITHIN SAID PASSAGE MEANS, GROOVE MEANS IN SAID POPPET, WIPER MEANS SPRING RETAINED IN SAID GROOVE MEANS IN SPRING CONTACT WITH SAID LANDS, AND MEANS FOR ADJUSTABLY CONTROLLING THE LONGITUDINAL POSITION OF SAID POPPET WITHIN SAID PASSAGE MEANS.

Claim 4

IN A VARIABLE THRUST DEVICE HAVING A THROAT, A COMBUSTION CHAMBER, A NOZZLE EXTENDING FROM THE COMBUSTION CHAMBER; A VARIABLE PROPELLANT INJECTOR, SAID INJECTOR COMPRISING PASSAGE MEANS COMMUNICATING WITH THE COMBUSTION CHAMBER OPPOSITE THE NOZZLE, A PLURALITY OF SPACED LANDS DISPOSED LONGITUDINALLY WITHIN SAID PASSAGE MEANS AND FORMING A PORTION OF SAID PASSAGE MEANS, MEANS DEFINING A PLURALITY OF TAPERED GROOVES BETWEEN SAID LANDS, SAID GROOVES BEING OF A MINIMUM DEPTH AT A POSITION NEAREST THE COMBUSTION CHAMBER, A POPPET MOVABLY DISPOSED WITHIN SAID PASSAGE MEANS, GROOVE MEANS IN SAID POPPET, WIPER MEANS SPRING RETAINED IN SAID GROOVE MEANS IN SPRING CONTACT WITH SAID LANDS, AND MEANS FOR ADJUSTABLY CONTROLLING THE LONGITUDINAL POSITION OF SAID POPPET WITHIN SAID PASSAGE MEANS.