Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...
Reexamination Certificate
1999-07-21
2001-05-29
Brittain, James R. (Department: 3626)
Buckles, buttons, clasps, etc.
Separable-fastener or required component thereof
Including member having distinct formations and mating...
C024S601500, C024S648000, C294S082180
Reexamination Certificate
active
06237201
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a connector with snap closure which is used for hooking a rigid element such as an eyelet of a piton, a bar or the like.
BACKGROUND OF THE INVENTION
In a device of this type the lever of the connector remains open on hooking of the connector onto the rigid body and only closes when the rigid body exerts an appropriate pressure on an appropriate snap part, thus avoiding having to open and insert the mouthpiece of the connector in the slot of the rigid body which has to be hooked, and also avoiding operating with the same hand in order to open the connector and keep it open.
A connector with snap closure is traditionally formed by a body with a general C shape having a central hole which leads into a front mouthpiece, and a sliding part stressed elastically to perform closure of the connector.
In particular the sliding part is jointed to a manual control part and is actuated in closure by means of an appropriate snap part.
The snap part in turn is provided with a complex system of snap means of hooking with the manual control part and the sliding part.
The presence of a plurality of parts and of a complicated system of connections between the snap part and the remaining parts of the connector may cause jamming thereof due to dust or external agents, and simultaneously restricts the performances thereof in terms of accuracy of the value of the force which permits release of the snap part and consequently closure of the same connector.
A connector of this type thus has an especially complex structure and becomes particularly expensive.
The object of the present invention is that of providing a connector with snap closure which eliminates the disadvantages found with traditional devices and which offers high standards of performances and is found to be reliable, simple, rugged and inexpensive.
Another object of the present invention is that of providing a connector which does not allow accidental opening in the case of impact or rubbing against the rock or the rope.
SUMMARY OF THE INVENTION
These and other objects are achieved using the connector with snap closure of the present invention, in accordance with the independent claim listed hereinbelow.
The snap connector of the present invention is characterised by the presence of a lever or of a pair of levers stressed elastically and whereon the means of closure of the connector are formed in one single piece, consisting of the element of closure of the mouthpiece of the containing area, the part for manual control of the opening of the connector and the snap element of the connector.
The advantage of providing a lever with a profile adapted and designed to perform three different functions, that is to say closure of the mouthpiece of the containing area, manual resetting and the snap of the connector, lies in the fact that the total number of the parts and of the relevant interconnections is considerably reduced, thus appreciably simplifying the device and in particular the mechanism of release of the snap and simultaneously ensuring reliable operation and accurate performances.
REFERENCES:
patent: 540801 (1895-06-01), Payne
patent: 1576050 (1926-03-01), Jellison
patent: 1622971 (1927-03-01), Porter
patent: 2234853 (1941-03-01), Brueggeman
patent: 2476734 (1949-07-01), Jellison
patent: 2591638 (1952-04-01), Trafton
patent: 3632145 (1972-01-01), Davis
patent: 4900043 (1990-02-01), Kho
patent: 4977649 (1990-12-01), Smetz
patent: 5033171 (1991-07-01), Kasai
patent: 5174701 (1992-12-01), Small
patent: 5713112 (1998-02-01), Genero et al.
patent: 0 465 995 (1992-01-01), None
patent: 0 769 626 (1997-04-01), None
patent: 2 132 678 (1984-07-01), None
Brittain James R.
Kong S.p.A.
Young & Thompson
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