Security lock
OwnerBartello C. Russiinventor
Life of this patent
Estimating the term…
Abstract
A security lock comprising a tube having inner and outer ends and a passage extending between such ends, and a shaft including first and second shaft sections interconnected for pivotal movement relative to each other. The shaft has inner and outer end portions. The shaft has a first position in which it is received in the passage of the tube with the inner end portion of the shaft projecting beyond the inner end portion of the tube. A latch which includes the inner end portion of the shaft releasably locks the shaft in the first position so that upon release of the latch, the shaft can move toward the outer end of the tube.
Claims2
A security lock for a first member comprising:
- a tube having inner and outer ends and a passage extending between said ends thereof;
- a shaft including at least first and second shaft sections and attaching means for attaching said shaft sections together for pivotal movement relative to each other, said shaft having outer and inner end portions;
- said shaft having a first position in which it is received in said passage of said tube with the inner end portion of the shaft projecting beyond the inner end of said tube and with the attaching means being within said passage of said tube, said outer end being attachable to the first member;
- latching means including said inner end portion of said shaft for releasably locking the shaft in the first position whereby upon release of the latch means said shaft is released to move toward the outer end of the tube;
- said latching means including a locking member, means for mounting the locking member for pivotal movement toward and away from said inner end portion of said shaft at least when said shaft is in said first position, resilient means for urging the locking member toward the inner end portion of the shaft at least when said shaft is in said first position, and cooperating surfaces on said inner end portion and said locking member for retaining said shaft in said first position;
- cam means on at least one of said locking member and said inner end portion of said shaft responsive to movement of the shaft toward the first position to cam the locking member away from the shaft;
- abutment means for preventing the locking member from pivoting to a position in which the cam means is ineffective to cam the locking member away from the shaft as the shaft moves toward the first position;
- a mounting plate adjacent the inner end of the tube, said mounting plate having an aperture therein through which the inner end portion of the shaft can project, said locking member being pivotally mounted on said mounting plate and said abutment means being carried by the mounting plate;
- a seal for sealing between the tube and the shaft;
- and
- resilient means in said tube for urging the shaft toward the outer end of the tube.
Dependencies are inferred from the claim text.