Patent TW-376423-B (TW)
Title: Combination lock mechanism
Inventor: KNOLL YEHONATAN
IPC: E05B67/22
Filed: 1998-09-02
Granted: 1999-12-11
Abstract: A combination lock mechanism comprising a housing, a locking element fitted with a locking latch and extending into the housing, at least two coaxially disposed rotatable locking assemblies, each comprising a cogged wheel, a locking disc formed with a peripheral recess and being fixable to the cogged wheel, and a reset element fixable to the cogged wheel, a forked locking member pivotally secured within the housing and fitted with first engaging fingers, each engaging finger adapted for engagement with the peripheral recess of a corresponding locking disc, second engaging fingers, each adapted for engagement with a corresponding reset element, and a locking lug for locking engagement with the locking latch of the locking element. The forked locking member being displaceable between a locking position in which the locking lug arrests the locking latch, an opening position in which each of the first engaging fingers is engaged within the peripheral recess of a corresponding locking disc and the locking lug disengages from the locking latch, and a reset position in which each of the second engaging fingers engages a corresponding reset elements entailing its displacement into a reset position. The lock further comprises a manipulating frame displaceable within the housing and comprising at least two arms, each arm fitted with displacement blades each corresponding with one of the cogged wheels, the arrangement being such that upon predetermined consecutive displacements of the manipulating frame the displacement blades encounter teeth of a respective cogged wheels entailing respective angular displacement of each of the at least two rotatable locking assemblies into a position in which all the peripheral recesses are aligned, thus allowing the forked locking member to shift into its open position. A combination lock mechanism comprising a housing, a locking element fitted with a locking latch and extending into the housing; at least two coaxially disposed rotatable locking assemblies each comprising a cogged wheel, a locking disc formed with a peripheral recess and being fixable to the cogged wheel, and a reset element fixable to the cogged wheel; a forked locking member pivotally secured within the housing and fitted with first engaging fingers, each adapted for engagement with the peripheral recess of a corresponding locking disc, second engaging fingers, each adapted for engagement with a corresponding reset element, and a locking lug for locking engagement with the locking latch of the locking element; the forked locking member being displaceable between a locking position in which the locking lug arrests the locking latch, an opening position in which each of the first engaging fingers is engaged within the peripheral recess of a corresponding locking disc and the locking lug disengages from the locking latch, and a reset position in which each of the second engaging fingers engages a corresponding reset elements entailing its displacement into a reset position; a manipulating frame displaceable within the housing and comprising at least two arms, each arm fitted with displacement blades each corresponding with one of the cogged wheels, the arrangement being such that upon predetermined consecutive displacements of the manipulating frame the displacement blades encounter teeth of a respective cogged wheels entailing respective angular displacement of each of the at least two rotatable locking assemblies into a position in which all the peripheral recesses are aligned, thus allowing the forked locking member to shift into its open position.