초록 ▼

A prison cell door locking device which responds to four locking modes of a prison cell locking system which uses a master bar assembly controllable from a central location to (1) release the locks of all cells, (2) lock all of the cells, (3) allow key operation of the locks at each individual cell,

A prison cell door locking device which responds to four locking modes of a prison cell locking system which uses a master bar assembly controllable from a central location to (1) release the locks of all cells, (2) lock all of the cells, (3) allow key operation of the locks at each individual cell, or (4) allow electric operation of the cell locks from the central location is provided. The device is fully assembled on a mounting plate which is provided with means for alignment with and securing onto the frame of a prison cell, and for connection to the cell door locking member. The assembled device contains mechanical and electrical components to operate the cell locks in all four modes. The device includes a master bar section which is permanently connectable into the master bar assembly, without further alignment, by long hollow channels of light weight metal. The device includes a drop bar head which carries a roller which locks the cell door by engaging a stepped notch in a roller bar by which the cell door is hung, the roller bar holding the drop bar head out of its locking position unless the door is either fully opened or closed.

대표청구항 ▼

A prison cell door locking system for controlling the door locks of a plurality of cells arranged in at least one row, wherein the cell of the row has a cell frame, said system comprising: a plurality of cell door locking and unlocking devices, one at each cell of said row; a central control locatio

A prison cell door locking system for controlling the door locks of a plurality of cells arranged in at least one row, wherein the cell of the row has a cell frame, said system comprising: a plurality of cell door locking and unlocking devices, one at each cell of said row; a central control location; a longitudinally movable master control bar assembly operable from said control location and extending horizontally along each cell of the row for simultaneously controlling the operation of said cell door locking and unlocking devices at each of the cells of the row; said master bar assembly including a plurality of horizontal master bar sections, one at each of said devices and operatively linked thereto and slidably mounted on to said frame; and, said master bar assembly further including a floating horizontal master bar link rigidly connected at each end to the ends of adjacent master bar sections of the cell door locking and unlocking devices of adjacent cells; said master bar section being shorter than said master bar link; and said master bar link being a hollow light weight channel with external cross-sectional dimensions greater than those of said master bar sections.