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Pneumatic, modular device for dispensing medication to animals

  • US 5,176,645 A
  • Filed: 05/01/1991
  • Issued: 01/05/1993
  • Est. Priority Date: 05/01/1991
  • Status: Expired due to Term
First Claim
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1. A modular gun assembly for delivering an adjustable measured dose of medication comprising:

  • a handle portion including a handle means, means for attaching a piston assembly at a forward face of said handle portion, said piston assembly including a container, a piston having an adjustable stroke length within said container, a means for delivering said dose from said container to an animal and means at a rearward face of said handle portion to attach a means for adjusting said dose, said means for adjusting comprising means to selectively limit the rearward movement of said piston within said container,means for supplying said medication through said adjusting means and said piston to said container forward of a front face of said piston,valve means connected to said handle portion for selectively driving said piston,means within said handle means and connected by a conduit to the rear face of said piston for delivering a source of compressed gas or fluid for driving said piston, whereby actuation of said valve means ejects said medication.

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