Locks – Parts – attachments – accessories and adjuncts – For key-operated mechanism
Patent
1994-03-25
1996-03-26
Boucher, Darnell M.
Locks
Parts, attachments, accessories and adjuncts
For key-operated mechanism
70408, 70457, 70456R, 206 371, A45C 1132, E05B 1924
Patent
active
055010903
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an elastically flexible laminar housing, realized in the shape and dimension of a credit card and comprising a central aperture or cavity, shaped so as to be capable of lodging a key or two superimposed keys. Said housing comprises means for elastically grasping and holding in position in a removable way, part of the head or the stem of the key or keys which are inserted in it, allowing the engagement or the disengagement after the users hand has bent said laminar housing.
2. Description of the Related Art
Several rigid supporting housings are known from the prior art, which are realized by means of plastic materials and comprise lodging seats for one or more keys.
We refer in particular to U.S. Pat. Nos. 4,637,236 and 4,677,335 which disclose rigid housings provided with adequate seats for receiving the keys, and with projections which face corresponding cavities obtained in the keys and apt to hold said keys so as to let them adhere to the housing, allowing the disengagement
of the key and its use in the correct position. However even if they have a certain effectiveness, said rigid supports have disadvantages due to difficult handling during the disengagement of the key and during its subsequent engagement inside the supporting housing.
There are other disadvantages and costs which must be taken into account, due to an additional working of the key components, both for plastic and metal components.
Keys made of a plastic material which are realized taking into account the corresponding structure of the supporting housing which holds them in position, must be inclined in particular suitable positions with respect to the supporting housing, so that they may be disengaged and used; once they have been disengaged from the supporting housing, however, they cannot be replaced in it.
SUMMARY OF THE INVENTION
The present invention eliminates these draw backs and disadvantages by providing a housing having the following advantages: key - locks, and keys being shaped to a particular form and comprising means to realize the correct engagement of the key inside the housing or its disengagement therefrom; furthermore, it allows the quick and correct engagement of the key inside the corresponding keyhole; engagements and disengagements of the keys with respect to their housing, through a simple and intuitive handling; suitable polymer plastics of a deformable type; and operating segments of the key carrying the cutting code on the stem, allowing a correct handling of the key.
The laminar flexible housing for holding keys, according to the present invention, has the following peculiarities: "credit card"; of a flat conventional type; and which the coded data of the respective key are reproduced, so as to permit one to identify the key by sensors or transducers of duplicating machines of the keys and for any other purpose. The invention refers in particular also to non conventional flat keys, to be employed in combination with said housing, and which have the following peculiarities: lodging seats obtained in the flexible housings; user of the exact seizing position of the key during its disengagement from the housing and during its engagement inside the key-hole: associated with means for joining together two keys to be engaged inside the same housing; said keys may be separated after their disengagement from the housing, allowing the separate use of each key; particular their head may be realized by means of a plastic material of different colours so as to facilitate the rapid recognition of each key; said head engages a pin projecting out of the upper part of the key's stem, the stem itself being made of a metallic material, preferably realized with a resistant alloy.
BRIEF DESCRIPTION OF DRAWINGS
Other peculiarities and advantages of the invention will be more clearly understood by means of the following description, with the help of the annexed drawing figures, which must be considered illustrative and not restrictive, and in wh
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Boucher Darnell M.
C.E.A. S.p.A.
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