Abstract: Herein we describe cartridges, including for shotgun shells, utilizing a particulate obturating medium to provide a gas seal. The obturating medium comprises particles having an average particle size greater than 212 microns, and an average specific gravity greater than 1.1. Such cartridges are particularly useful as shotshell cartridges used as blanks, less lethal loads, hunting loads, target loads, and barrel-cleaning loads. Methods for loading and use are described, as well as different particulate obturating media.
Type:
Grant
Filed:
September 1, 2020
Date of Patent:
November 23, 2021
Inventors:
Jason P. McDevitt, James Y. Menefee, III
Abstract: To provide a functional continuous rapid freezing apparatus with which cold air is made uniformly contact with the whole face of an article to be frozen, easily and rapidly passing the maximum ice crystal generating zone, and the central portion of the article to be frozen can reach for the predetermined temperature within a short period of time, a freezing chamber 2 in which an article Q to be frozen is stored, a heat exchanger 1 for cooling disposed on a central portion of the freezing chamber 2 as a partition to divide the freezing chamber 2 into a first freezing block 2a and a second freezing block 2b, a first blowing fan 5 disposed to face the heat exchanger 1 for cooling through the first freezing block 2a, and a second blowing fan 6 disposed to face the heat exchanger 1 for cooling through the second freezing block 2b, are provided.
Type:
Grant
Filed:
September 26, 2012
Date of Patent:
September 19, 2017
Assignee:
JAPAN SCIENCE & TECHNOLOGY TRADING CO., LMITED