Michael H Nee

US Patent:

45314454, Jul 30, 1985

Filed:

Nov 7, 1983

Appl. No.:

6/548977

Inventors:

Michael A. Nee - San Dimas CA

Assignee:

N.I. Industries, Inc. - Los Angeles CA

International Classification:

F41F 304

US Classification:

89 1813

Abstract:

A projectile launcher has first and second telescopingly connected sections enabling it to be extended into an operative state when it is to be discharged. The firing mechanism has a firing member carried by the first section which extends into a housing on the second section. The rear of the housing is a chamber for a pivoted trigger having a forward portion of greater length than its rearward portion and underlying a boot covered port. A rotary sear in the chamber has first and second arcuately spaced shoulders the second of which is engaged and held by the rearward trigger portion under the influence of a spring. When but a short further relative movement between the sections is required to fully extend the launcher, the first sear shoulder engages and pulls forward the firing member thus to cock the firing mechanism when the launcher is fully extended, the firing spring then exerting a substantial force against the first shoulder. While the difference in lengths of the trigger portion offers the user a theoretical mechanical advantage, the place where the effective pressure of the fingers applied thereagainst through the boot is an uncertain and variable factor causing inaccuracy in use due to the resulting variations in the force required to pull the trigger. The radial distances of the sear shoulders are such that the force exerted by the second sear shoulder is so reduced that said factor is minimized to an extent enabling the use of such launchers to be attended with increased accuracy.