Impact resistant security door auxiliary latch mechanism
First Claim
1. A latching mechanism and complementary receiver adapted to be contained within interiors of a door and a complementary door jamb, said latching mechanism comprising:
- (a) an elongated plunger shaft having a cylindrical body and a substantially conical distal end arranged to extend from said door into said complementary receiver in said door jamb when said plunger shaft is in an extended position, said receiver having a cylindrical concavity terminating in a substantially conical concavity, said plunger shaft and said cylindrical and substantially conical concavities being respectively configured so that said substantially conical distal end of said plunger haft fits tightly into said substantially conical concavity while said cylindrical body of said plunger shaft fits loosely in said cylindrical concavity so that a diameter of said cylindrical body of said plunger shaft and a diameter of said cylindrical concavity have a predetermined size difference;
(b) a power supply arranged to provide electrical power to said latching mechanism; and
,(c) actuating means for forcibly maintaining said plunger shaft in an extended position, and for retracting said plunger shaft away from said receiver only when said actuating means is provided with electrical power,(d) guide means for sliding said plunger shaft into said complementary receiver.
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Accused Products
Abstract
A security door latching mechanism and complementary receiver are arranged to be installed within a door and a complementary door jamb. In the preferred embodiment, the installation takes place in a vehicle and the latching mechanism can be installed either in the door or in the door frame or jamb. The latching mechanism includes a plunger shaft which is arranged to extend from the door jamb into the receiver, and is forcibly maintained in the extended position until retracted by an electrical current provided to an actuator. This actuator is spring-driven to keep the plunger shaft in an extended position until provided with an electrical power to retract the plunger shaft. A wedge-shaped guide forces the plunger shaft to slide to the recess when the door is being closed. It is necessary to constantly maintain the electric power to the actuator in order to keep the plunger shaft retracted.
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Citations
19 Claims
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1. A latching mechanism and complementary receiver adapted to be contained within interiors of a door and a complementary door jamb, said latching mechanism comprising:
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(a) an elongated plunger shaft having a cylindrical body and a substantially conical distal end arranged to extend from said door into said complementary receiver in said door jamb when said plunger shaft is in an extended position, said receiver having a cylindrical concavity terminating in a substantially conical concavity, said plunger shaft and said cylindrical and substantially conical concavities being respectively configured so that said substantially conical distal end of said plunger haft fits tightly into said substantially conical concavity while said cylindrical body of said plunger shaft fits loosely in said cylindrical concavity so that a diameter of said cylindrical body of said plunger shaft and a diameter of said cylindrical concavity have a predetermined size difference; (b) a power supply arranged to provide electrical power to said latching mechanism; and
,(c) actuating means for forcibly maintaining said plunger shaft in an extended position, and for retracting said plunger shaft away from said receiver only when said actuating means is provided with electrical power, (d) guide means for sliding said plunger shaft into said complementary receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An auxiliary latching mechanism and complementary receiver adapted to be mounted on a door and complementary jamb having a primary latching mechanism said auxiliary latching mechanism and complementary receiver arranged to be mounted on said door and complementary jamb, and comprising:
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(a) an elongated plunger shaft having a cylindrical body and a substantially conical distal end arranged to extend from said door into said complementary receiver in said door jamb when said plunger shaft is in an extended position, said complementary receiver having a cylindrical concavity terminating in a substantially conical concavity, said plunger shaft and said cylindrical and substantially conical concavities being respectively configured so that said substantially conical distal end of said plunger shaft fits tightly into said substantially conical concavity while said cylindrical body of said plunger shaft fits loosely in said cylindrical concavity so that a diameter of said cylindrical body of said plunger shaft and a diameter of said cylindrical concavity have a predetermined size difference; (b) a power supply arranged to provide electrical power to said latching mechanism; and
,(c) actuating means for forcibly maintaining said plunger shaft in an extended position, and for retracting said plunger shaft away from said receiver only when said actuating means is provided with electrical power. (d) guide means for sliding said plunger shaft into said complementary receiver.
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Specification