Locks – Parts – attachments – accessories and adjuncts – For key-operated mechanism
Patent
1982-04-22
1985-06-18
Wolfe, Robert L.
Locks
Parts, attachments, accessories and adjuncts
For key-operated mechanism
A47G 2910
Patent
active
045234426
DESCRIPTION:
BRIEF SUMMARY
The object of the present invention is to provide a key-holder comprising a device allowing to adjust the size of its ring which may vary according to the number of keys that are hooked therein, and preventing the inadvertent opening of the ring after it has been locked.
In the field of key-holders, the inventions of the prior comprise primarily spiral rings or half-rings bearing on a support, opening and closing only by the simple elasticity of the metal used for their construction.
Some systems which are more elaborate for opening and closing the ring comprise what follows:
Either a bracelet provided with an inner notch wherein one ring end worked as a catch comes in, the other ring end sliding in the bracelet; or hinged devices actuated by a small lateral force lever; or a serrated with a simple or reverse thread, arranged on an ovoidal ring of which both ends are threaded.
There is also a wall or mural key-holder comprising a foldable moving flap, after inserting the keys, on a panel fixed to the wall and provided with a spring clip which provides for the holding or releasing of the movable flap.
The object of the present invention is to provide the user with a key-holder allowing an easy insertion of an increasing or decreasing number of keys, owing to a ring of which the size may be varied and may be adjusted according to different positions and of which the locking and opening are effected by a mechanism incorporated in the body of the key-holder and which allows to give the desired size to the ring, as well as to prevent the inadvertent opening. The object of the present invention is a key-holder according to claim 1.
The attached drawings illustrate, by way of non-restrictive examples, two forms of executions and an alternative of the key-holder according to the invention.
FIG. 1 is a front view of the first form of execution.
FIG. 1a is a profile view corresponding to FIG. 1.
FIG. 2 is a cross-section view according to 2--2 of FIG. 1a, showing the inside of this form of execution.
FIG. 3 is a diagrammatic front view of the second form of execution.
FIG. 3a is a profile view corresponding to FIG. 3.
FIG. 4 is a partial cross-section view, on a larger scale, according to 4--4 of FIG. 3.
FIG. 5 is a view similar to FIG. 3 but showing an alternative of the second form of execution.
The first form of execution is formed, on one hand by a flat casing 2 comprised of two integral symmetric parts forming the body of the key-holder and, on the other hand, with a rod 1 made of metal or hard plastic material, having a U-shape of which the branches 1a, 1b are of unequal lengths whereas its intermediate portion 1c has the shape of a semi-circle. In the inside of the casing 2 there is arranged a mechanism, visible on FIG. 2, of which the function will be explained further. There are provided in the casing 2 two parallel grooves 9a, 9b, of unequal length, in which are engaged and may slide the branches 1a, 1b, respectively, of the part 1. The branch 1b is longer and is terminated by a catch 4 forming a bolt, as it will be further described. There is also provided in the casing 2 a chamber 13 wherein there is arranged an oscillating part 3 having the general shape of a triangle rectangle and having at its summit opposite to the right angle a curved portion 11 forming a blade spring. On its side opposite to that summit, the part 3 has an actuating button 10 traversing a slot 10a of the body 2 and projecting slightly outside the body, in a depression 10b of the latter.
The part 3 has on one of its sides a row of notches 14 forming latch locks and in each of which the bolt 4 may be engaged selectively, as it will be further described. The operaton of this form of execution is as follows. Starting from the position of the members represented on FIG. 3 where the spring blade 11 forces one of the notches 14 to cooperate with the bolt 4, if the actuating button 10 is operated from top to bottom on FIG. 3, the part 3 is lowered by oscillating about its right extremity and the notch or lock 14 wherein the bolt 4 was engag
REFERENCES:
patent: 755473 (1904-03-01), Erb
patent: 2361506 (1944-10-01), Smith
patent: 2816434 (1957-12-01), Olson
patent: 2924088 (1960-02-01), Goldman
Brentini Attilio
Wolfe Robert L.
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