Utility knife
AssigneeGreat Neck Saw Manufacturers, Inc.
InventorQiu Jian Ping
Life of this patent
Estimating the term…
Abstract
A utility knife having a handle and a blade holder which is pivotally mounted on the handle for movement from an unfolded position to a folded position. The handle has a space adapted to receive the blade holder when the blade holder is in its folded position. The blade holder includes a main wall and guard wall pivotally mounted on the main wall to pivot from an open position to a closed position overlying the main wall. The main wall being adapted to hold a blade so that a blade is interposed between the main wall and guard wall when the guard wall is in its closed position.
Claims32
A utility knife comprising a handle and a blade holder, said blade holder being pivotally mounted on said handle for movement from an unfolded position to a folded position, said handle having a space adapted to receive at least a portion of said blade holder when the blade holder is in its folded position, said blade holder comprising a main wall and a guard wall movably mounted on said main wall and movable from an open position to a closed position overlying said main wall, the inner surfaces of said main wall and said guard wall being substantially planar, said main wall having means to hold a blade having opposed flat side walls thereon whereby the blade is interposed between said main wall and said guard wall when said guard wall is in its closed position, with the planar inner surface of the main wall abutting one flat side wall of the blade and the planar inner surface of the guard wall abutting the other flat side wall of the blade, said guard wall and said main wall having a predetermined length, the length of the blade being greater than said predetermined length whereby the blade protrudes beyond the front end of said blade holder, and threaded means are provided to hold the guard wall in place over the main wall when the guard wall is in its closed position.
A utility knife comprising a handle and a blade holder, said blade holder being pivotally mounted on said handle for movement from an unfolded position to a folded position, said handle having a space adapted to receive at least a portion of said blade holder when the blade holder is in its folded position, said blade holder comprising a main wall and a guard wall pivotally mounted on said main wall for movement from an open position to a closed position overlying said main wall, said main wall having means to hold a blade thereon whereby the blade is interposed between said main wall and said guard wall when said guard wall is in its closed position, said blade holder comprises a rear end and a front end, said front end comprising said guard wall and said main wall, said rear end being pivotally mounted to said handle and having upper and bottom edges, said guard wall is pivotally mounted to said main wall on a pivot, a blade lock assembly is mounted for pivotal movement relative to said main and guard walls from an open position to a closed position to hold said guard wall in said closed position.
A utility knife comprising a handle and a blade holder, said blade holder being pivotally mounted on said handle for movement from an unfolded position to a folded position, said handle having a space adapted to receive at least a portion of said blade holder when the blade holder is in its folded position, said blade holder comprising a main wall and a guard wall mounted on said main wall and movable from an open position to a closed position overlying said main wall, said main wall having means to hold a blade thereon whereby the blade is interposed between said main wall and said guard wall when said guard wall is in its closed position, said blade holder comprises a rear end and a front end, said front end comprising said guard wall and said main wall, said rear end being pivotally mounted to said handle and having upper and bottom edges, a blade lock assembly is mounted for pivotal movement relative to said main and guard walls from an open position to a closed position to hold said guard wall in said closed portion.
Dependencies are inferred from the claim text.