i dont know if this should be here or else were, but it as to do with guns so i figure i put it here.
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Originally Posted by airsoft news
Our loyal readers probably remember that latest upgrade of Tokyo Marui's venerable gearbox (first version was patented in 1993) will be protected by patent. Patent (dated late 2007) is named Recoil Shock Device For Toy Gun. Idea is very simple and seems effective. Description courtesy of Japanese Patent Office:
PROBLEM TO BE SOLVED: To obtain a recoil shock equivalent to an increased piston weight without increasing the piston weight and obtain the same recoil shock as that in an actual gun without impairing the appearance of a gun by separately providing a movable part of a piston cylinder from a weight.
SOLUTION: This device comprises a connection part 31 which is moved in a backward direction by the movable part 13 for obtaining a pseudo reaction or a recoil shock by driving the weight resulted from the operation of the movable part of the piston cylinder for generating compressed air, and a recoil spring 35 which is laid in a compressed state by the movable part 13 by receiving a force transmitted to the weight 33 through the connection part 31. When the recoil spring 35 is compressed and then extended by a repelling force, a counteraction involved in the movement of the weight 33 is transmitted to a gun body 37 as the recoil shock.
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