Locks – Special application – For closures
Patent
1987-09-21
1990-01-23
Smith, Gary L.
Locks
Special application
For closures
70277, 109 47, 312319, E05B 6546
Patent
active
048950084
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a lockable security system and relates particularly, although not exclusively, to a lockable security drawer system.
It is one object of the present invention to provide a lockable drawer system which is easy to operate and can provide secure safekeeping of cash and valuables.
With this object in view the present invention may provide in one aspect a lockable security system including at least one member movable between open and closed positions and adapted to engage a support means and an electronic combination lock adapted to be connected, directly or indirectly, to said member for allowing movement between open and closed positions when a preselected combination has been entered by a user.
Preferably said security system is a lockable drawer system which includes a locking device on said drawer or said support means and an electrically operable release mechanism on the other of said drawer or said support means, said electrically operable release mechanism being disengaged from said locking device when said preselected combination has been entered. In one preferred embodiment said locking means includes a rotatable cam co-operating with a pin member mounted on said support means to be engaged by said cam member. Preferably said electrically operable release mechanism includes a solenoid-activated arm member which engages said cam.
In one practical embodiment said electronic combination lock includes a plurality of switches, the activation/de-activation of which must be in a predetermined manner.
In a further aspect of the present invention there may be provided a lockable drawer system including at least one drawer slidable between open and closed positions and adapted to engage a support means, said drawer or said support means including a rotatable cam having first and second slots therein, said first slot co-operating with a pin member affixed to the other of said drawer or said support means to co-operate with said first slot, a latch means within said drawer and adapted to engage said second slot and latch release means for releasing said latch means to enable said drawer to be opened.
Preferably said latch release means includes a lock cylinder to release said latch. In a preferred embodiment said latch release means is a solenoid. In an especially preferred embodiment said latch release means includes both said lock cylinder and said solenoid, both operable independently of each other.
In yet a further aspect of the present invention there may be provided an electrically operable release mechanism including a rotatable cam, said cam adapted to engage a pin member when in a first or locked position, said cam pivotally coupled to a resiliently biased pivotally mounted lever at one end of said lever, the other end of said lever being held by a plunger of a solenoid when in said first position and said lever moving to a second or release position when said solenoid is actuated to withdraw said plunger causing said cam to rotate and release said pin member under resilient bias.
In still yet a further aspect of the present invention there may be provided a spring-loaded opener for slidably mounted drawers including a block member constrained to move within the channel of said bracket member, said block member adapted to be secured to a drawer support allowing relative movement between said bracket member and said block member, a pin member mounted within said channel and passing through said block member, said pin member including first and second springs co-axially mounted thereover, said first spring located between said bracket member and one end face of said block member and said second spring constrained by said pin member and the other end face of said block member.
These and other objects and aspects of the present invention will be more fully described with reference to the preferred non-limitative embodiment shown in the accompanying drawings, in which:
FIG. 1 is a perspective view of a first embodiment of a drawer system made in accordance with the invention;
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"Adjustable Profile Latch," W. W. Stokes, Jr., IBM Technical Disclosure Bulletin, vol. 21, No. 10, Mar. 1979, pp. 4144 and 4145.
Dino Suzanne L.
Smith Gary L.
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