Patent ID: 6487942
Filing Date: 2002-12-03
Classification: A62C,B25B

Abstract:
A fire sprinkler head tool comprising:a pair of large capacity locking pliers, said pliers having a handle portion and a jaw portion, said jaw portion including a fixed jaw defining a first inner concave portion and a movable jaw defining a second inner concave portion, said handle portion including a body secured to said fixed jaw, and wherein said movable jaw is pivotally connected to said body at a pivot point, wherein the movement and position of the movable jaw with respect to the fixed jaw is controlled by an over-center toggle linkage that pivots the movable jaw relative to the body and locks the movable jaw in position, and wherein said toggle linkage includes a lever adapted for gripping by a user, a stub arm, and an adjustment bolt threadably coupled to the pliers body to bias the stub arm and adjust the toggle linkage; a first and a second jaw extension connected to the same side of said jaw portion and extending substantially laterally from said side of said jaw portion of said pliers, each of said jaw extensions having an upper working portion and concave gripping portion; a stop block integral with said fixed jaw of said pliers; a threaded adjuster block affixed to said movable jaw; and an adjuster screw threadably inserted through said adjuster block, said adjuster screw selectively threadable into and through said adjuster block to alter its proximity to said stop block, wherein said stop block, said threader adjuster block, and said adjuster screw cooperate to restrict the closure of said fixed jaw and said movable jaw during use.