Pressure reducing air gun

Claim 2

In an air gun having an air inlet and an air outlet and valve means therebetween: the improvement in means for the discharge from the outlet of a mainstream air jet and an umbrella jet of air circumscribed therearound with an increase in the discharge in the umbrella jet of air during a condition of overload relief comprising: an elongated nozzle having an elongated upper shank portion fixed in the gun with an outer surface contiguous with the inner surface of the gun and a lower main body portion extending downwardly therefrom and outwardly of the outlet, said nozzle having a central bore longitudinally thereof for the discharge of air in the form of a mainstream jet at the outer end thereof, the shank having an annular recess adjacent the upper end thereof and a set of peripherally arranged longitudinally extending flutes on opposite sides of the recess disposed relative to the longitudinal shank axis, a spring means normally seated in the recess of the shank, a plurality of radially arranged passageways extending through the shank between the seat of the spring means and the central bore of the nozzle, the spring means lifting from its seat in the recess upon pressure build up within the central bore of the nozzle through any dead ending of the nozzle.

Claim 3

An air gun comprising in combination: a body having an air inlet and outlet and a well provided with a valve seat therebetween, the body having air passageways from the inlet to the well above the seat and from the well below the seat to the jet means, a valve engageable with the seat having a stem extending through the body, spring means urging the valve towards the seat, a trigger operable to act on the stem to elevate the stem and valve from the seat, internal stop means to limit movement of the valve from the seat in the form of a stop member adjustable in the well and engageable by the valve as it is elevated by the trigger means for the discharge from the outlet of a mainstream air jet and an embrella jet of air circumscribed therearound with an increase in the discharge in the umbrella jet of air during a condition of overload relief and including: an elongated nozzle having an elongated upper shank portion fixed in the gun with an outer surface contiguous with the inner surface of the gun and a lower main body portion extending downwardly therefrom and outwardly of the outlet, said nozzle having a central bore longitudinally thereof for the discharge of air in the form of a mainstream jet at the outer end thereof, the shank having an annular recess adjacent the upper end thereof and a set of peripherally arranged longitudinally extending flutes on opposite sides of the recess disposed relative to the longitudinal shank axis, a spring means normally seated in the recess of the shank, a plurality of radially arranged passageways extending through the shank between the seat of the spring means and the central bore of the nozzle, the spring means lifting from its seat in the recess upon pressure build up within the central bore of the nozzle through any dead ending of the nozzle.

Claim 4

An air gun comprising in combination: a body having an air inlet and outlet and a well provided with a valve seat therebetween, the body having air passageways from the inlet to the well above the seat and from the well below the seat to the jet means, a valve engageable with the seat having a stem extending through the body, spring means urging the valve towards the seat, a trigger operable to act on the stem to elevate the stem and valve from the seat, internal stop means to limit movement of the valve from the seat in the form of a stop member adjustable in the well and engageable by the valve as it is elevated by the trigger means for the discharge from the outlet of a mainstream air jet and an embrella jet of air circumscribed therearound with an increase in the discharge in the umbrella jet of air during a condition of overload relief and including: an elongated nozzle having an elongated upper shank portion fixed in the gun with an outer surface contiguous with the inner surface of the gun and a lower main body portion extending downwardly therefrom and outwardly of the outlet, said nozzle having a central bore longitudinally thereof for the discharge of air in the form of a mainstream jet at the outer end thereof, the shank having an annular recess adjacent the upper end thereof and a set of peripherally arranged longitudinally extending flutes on opposite sides of the recess disposed relative to the longitudinal shank axis, a spring means normally seated in the recess of the shank, a plurality of radially arranged passageways extending through the shank between the seat of the spring means and the central bore of the nozzle, the spring means lifting from its seat in the recess upon pressure build up within the central bore of the nozzle through any dead ending of the nozzle.

Claim 5

In an air gun having an air inlet and an air outlet and valve means therebetween: the improvement in means for the discharge from the outlet of a mainstream air jet and an umbrella jet of air circumscribed therearound with an increase in the discharge in the umbrella jet of air during a condition of overload relief comprising: an elongated nozzle having an elongated upper shank portion fixed in the gun with an outer surface contiguous with the inner surface of the gun and a lower main body portion extending downwardly therefrom and outwardly of the outlet, said nozzle having a central bore longitudinally thereof for the discharge of air in the form of a mainstream jet at the outer end thereof, the shank having an annular recess adjacent the upper end thereof defining a pair of collars extending radially outwardly of the external surface of the recess and spaced axially of one another and a set of peripherally arranged longitudinally extending flutes in the collars on opposite sides of the recess disposed relative to the longitudinal shank axis, a plurality of radially arranged passageways extending through the shank between the seat of the spring means and the central bore of the nozzle, the spring means lifting from its seat in the recess upon pressure build up within the central bore of the nozzle through any dead ending of the nozzle, a series of holes in the shank between the two collars, a pressure relief device in the form of a strip of sheet material of a width equal to the separation between the two collars and of a length greater than the circumference of the recess, surrounding the recess between the collars with its ends in overlapping relationship to seal the holes in the shank.

Claim 6

In an air gun having an air inlet and an air outlet and valve means therebetween: the improvement in means for the discharge from the outlet of a mainstream air jet and an umbrella jet of air circumscribed therearound with an increase in the discharge in the umbrella jet of air during a condition of overload relief comprising: an elongated nozzle having an elongated upper shank portion fixed in the gun with an outer surface contiguous with the inner surface of the gun and a lower main body portion extending downwardly therefrom and outwardly of the outlet, said nozzle having a central bore longitudinally thereof for the discharge of air in the form of a mainstream jet at the outer end thereof, the shank having an annular recess adjacent the upper end thereof defining a pair of collars extending radially outwardly of the external surface of the recess and spaced axially of one another and a set of peripherally arranged longitudinally extending flutes in the collars on opposite sides of the recess disposed relative to the longitudinal shank axis, a plurality of radially arranged passageways extending through the shank between the seat of the spring means and the central bore of the nozzle, the spring means lifting from its seat in the recess upon pressure build up within the central bore of the nozzle through any dead ending of the nozzle, a series of holes in the shank between the two collars, a pressure relief device in the form of a strip of sheet material of a width equal to the separation between the two collars and of a length greater than the circumference of the recess, surrounding the recess between the collars with its ends in overlapping relationship to seal the holes in the shank.