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US 6,318,138 B1Granted
Remotely controlled door lock
OwnerKurt Mathews, Rainer Kuenzelinventors
Life of this patent
Estimating the term…
Abstract
A door lock which can be operated electrically, remotely, or mechanically using a lever or a key. The lock utilized a blocking bar which engages or disengages a notch in a locking latch. When the blocking bar is engaged within the notch, the latch is positioned in a strike plate of a door frame thereby locking the door. When disengaged, the latch can be retracted from the strike plate thereby allowing the door to be opened.
Claims15
A door lock comprising:
- (a) a lock housing for mounting to an inner face of a door adjacent the edge;
- (b) a spring latch with two beveled faces moveable within said housing between extended and retracted positions;
- (c) a spring latch blocking bar moveable within said housing, in a path perpendicular to said spring latch, with
- (i) one position engaging said latch at a notch within said latch thereby restricting retraction into said lock housing, and
- (ii) a second position disengaging said latch at said notch thereby permitting retraction into said housing;
- (d) electric moving means within said housing for moving said latch blocking bar under electrical power between its engaged and disengaged positions, the electric moving means comprising
- (i) an electric motor connected to said housing;
- (ii) an output shaft having external threads and connected to said motor wherein said motor produces a torque in said output shaft, and the output shaft extends into a longitudinal opening in said blocking bar;
- (iii) a power supply connected to said housing for energizing said motor;
- (iv) a nut having internal threads which engage said external threads of said shaft, wherein said nut is disposed within said longitudinal opening and about said output shaft for slidable engagement with walls of said longitudinal opening, and the engagement of said nut preventing rotation relative to said blocking bar, and
- (v) a pair of helical springs disposed in said opening on opposing sides of said nut between said nut and opposing ends of said opening, whereby torque applied to said output shaft will apply a force to said nut via the respective threads which transfers the force to said blocking bar via the helical springs to move said blocking bar between its engaged and disengaged position with said latch;
- (e) means mounted within said housing for receiving a wireless energy signal and controlling the operation of said electrical moving means with a control signal triggered by the wireless energy signal to move said blocking bar from said engaged position to said disengaged position, hold said blocking bar to its disengaged position for a predetermined time period, and then return said blocking bar to its engaged position;
- (f) portable means for transmitting the wireless energy signal to said receiving and controlling means;
- and
- (g) a latch receiving member for mounting to a door opening frame adjacent said lock housing for engaging said spring latch to urge it to its retracted position as the door is being opened or closed and receiving said spring latch in its extended position when a door is fully closed within a door opening frame.
12 more elements
A door lock comprising:
- (a) a lock housing for mounting to an inner face of a door adjacent the edge;
- (b) a spring latch;
- (c) a spring latch blocking bar moveable within said housing, in a path perpendicular to said spring latch, with
- (i) one position engaging said latch at a notch within said latch thereby restricting retraction into said lock housing, and
- (ii) other position disengaging said latch at said notch thereby permitting retraction into said housing;
- (d) means within said housing for moving said latch blocking bar between its engaged and disengaged positions, the means for moving comprising
- (i) an electric motor connected to said housing;
- (ii) an output shaft having external threads and connected to said motor wherein said motor produces a torque in said output shaft, and the output shaft extends into a longitudinal opening in said blocking bar;
- (iii) a power supply connected to said housing for energizing said motor;
- (iv) a nut having internal threads which engage said external threads of said shaft, wherein said nut is disposed within said longitudinal opening and about said output shaft for slidable engagement with walls of said longitudinal opening, and the engagement of said nut preventing rotation relative to said blocking bar, and
- (v) a pair of helical springs disposed in said opening on opposing sides of said nut between said nut and opposing ends of said opening, whereby torque applied to said output shaft will apply a force to said nut via the respective threads which transfers the force to said blocking bar via the helical springs to move said blocking bar between its engaged and disengaged position with said latch;
- and
- (e) a latch receiving member for mounting to a door opening frame adjacent said lock housing for engaging said spring latch to urge it to its retracted position as the door is being opened or closed and receiving said spring latch in its extended position when a door is fully closed within a door opening frame.
10 more elements
Dependencies are inferred from the claim text.