Cartridge for explosively operated industrial tools

• US 4,913,055 A
• Filed: 08/16/1989
• Issued: 04/03/1990
• Est. Priority Date: 08/16/1989
• Status: Expired due to Term

• Current Assignee: AMP Incorporated (Johnson Controls International plc)
• Original Assignee: AMP Incorporated (Johnson Controls International plc)
• Inventors: Mair, Ross L., Carpenter, Mitchell G., Goto, Kazuhiro, Leiby, Douglas J., McBain, Reid
• Primary Examiner(s): Jordan, Charles T.
• Assistant Examiner(s): Lieberman, Rochelle
• Application Number:
  US07/394,605
• Time in Patent Office: 230 Days
• Field of Search: 102/469, 102/470, 102/530, 102/531, 89/1.14
• US Class Current: 102/470
• CPC Class Codes: B25C 1/163 Cartridges
• CPC Class Codes: F42B 8/04 Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge

Abstract

An improved cartridge for use with explosively-operated industrial tools. More particularly the cartridge includes a gas check having a rigid washer between opposite ends which causes the deformation of the gas check in cooperation with the gases from burning powder.

Claims

1. An improved cartridge for use with explosively operated industrial tools, said cartridge comprising:

an elongated shell open at one end and closed at a base end, said shell having a chamber adjacent said base end;

powder deposed in said chamber;

a gas check of plastics material and having an outwardly open aperture in one end and a rigid washer between said aperture and another end, said gas check positioned in said shell adjacent said powder with said aperture facing the open end; and

a primer positioned in said aperture.

2. The cartridge according to claim 1 wherein said gas check includes a lower section, and an upper section with said washer therebetween and said aperture being in said upper section.

3. The cartridge according to claim 2 wherein said washer includes an opening therethrough which receives an annular ring projecting from a surface of said lower section.

4. The cartridge according to claim 3 wherein said upper section includes a recessed surface at an end opposite from said aperture and which receives said washer.

5. The cartridge according to claim 2 wherein said lower section includes a flat top surface and base surface, said base surface in tandem, having two tapered surfaces of differing angles relative to said top surface.

6. An improvement to a cartridge for use with explosively operated industrial tools and having an elongated shell open at one end and a primer therein detonated by means entering the open end, said improvement comprising a gas check formed of separate upper and lower sections with a washer therebetween said upper section having an aperture in a free end for receiving a primer and further having, in cooperation with said lower section means for retaining said washer therebetween.

7. The improvement according to claim 6 wherein said lower section includes a base surface at a free end with said base surface being a double truncated-cone-shaped.

8. The improvement according to claim 7 wherein the double truncated-cone-shape includes first and second tapered surfaces with each surface being tapered at a different angle relative to the other.