Release Trigger Patents (Class 42/DIG1)
  • Patent number: 5216190
    Abstract: A device, for releasing a locked trigger set by a set-trigger mechanism in a gun having a receiver, a bolt loosely inserted in the receiver, and a bolt handle for rotating and reciprocating the bolt so as to load a bullet and set in a fire-enabling state, includes an abutting portion formed on the bolt handle, and a release link positioned for contact with the abutting portion and a trigger in accordance with a rotational movement of the bolt handle. The trigger locked by the set-trigger mechanism is released when the bolt handle is rotated up to a fire-disabling position, causing the abutting portion to push the release link against the trigger to unlock it. With this construction above, when the bolt handle is in the fire-disabling state, the trigger can never be in the locked position, which enables a safe and secure release of the locked trigger and safe bullet loading and/or removal.
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: June 1, 1993
    Assignee: Kabushiki Kaisha Miroku Seisakusho
    Inventors: Shinpei Tanaka, Nobuya Kurohara
  • Patent number: 4835893
    Abstract: A firearm is provided customarily equipped with a shiftable trigger body portion mounted from the frame of the firearm for movement between a firing position and a release position and incorporating an outwardly projecting arcuate tang portion engageable by a user's trigger finger and enclosed within a trigger guard. The instant invention resides in the removable mounting of the finger engageable tang portion from the body portion of the trigger and, further, the construction of the finger engageable portion as a continuous peripheral ring shaped member which may be conveniently retained on a user's trigger finger during periods of non-use of the associated handgun.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: June 6, 1989
    Inventor: John H. Kelso
  • Patent number: 4671005
    Abstract: A trigger assembly for firearms which is externally adjustable to change trigger pull forces for both hunting and competition shooting, and which includes safety features for preventing inadvertant discharge. The trigger assembly is particularly adaptable for use with Mauser-type, bolt-action firearms and includes an over-center linkage mechanism which is geometrically adjustable to vary the pull force of the trigger piece. The over-center linkage mechanism includes a rotatable lever operably connected to the trigger piece, and a collapsible block pivotally coupled to the lever. The block and lever are alignable in supporting relation to the striker locking arm, which in turn holds the striker cocked. The relative alignment of the block and lever determines the amount of trigger pull forces required with the linkage mechanism in supporting engagement with the striker lock arm.
    Type: Grant
    Filed: May 9, 1985
    Date of Patent: June 9, 1987
    Assignees: Arnold W. Jewell, James E. Goddard
    Inventor: Arnold W. Jewell
  • Patent number: 4447975
    Abstract: A gun with a spring-urged thrust hammer which first strikes the firing pin when released by the trigger and then has its forward thrust transferred from the firing pin to the bolt so that the hammer, firing pin and bolt are moving forward the extent of the headspace tolerance to counter recoil as the gun fires. This arrangement is shown applied to a shotgun having a unique barrel and sight.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: May 15, 1984
    Inventor: Albert V. Ljutic