Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...
Patent
1994-04-28
1995-08-29
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Separable-fastener or required component thereof
Including member having distinct formations and mating...
24615, 24635, A44B 1100
Patent
active
054448999
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to e safety catch interconnecting two separate parts preamble of appended Claim 1.
BACKGROUND
There are needs in many contexts for a safety catch for interconnecting two parts, in which the safety catch, on being subjected to counter-directed traction forces exceeding a given magnitude, breaks the interconnection between the two parts and thereby releases the interconnected parts from one another. Such needs are particularly accentuated in practical applications in which there may be the risk of injury, for example personal injury, if the forces involved become excessively large. Such may, for instance, be the case in connection with sport and freetime activities such as, for example, skiing. There is also a need in buckles for children's safety helmets, that the buckles disengage if the traction forces in the straps retaining the helmet on the child's head become excessive. Accidents have occurred because children wearing such safety helmets while playing in, for example, trees have become trapped by the helmet between two branches of a tree, been unable to escape by their own efforts and consequently been strangled.
There are also needs to be able, in the buckles employed for safety helmets to adjust that force at which the parts interconnected by the buckle are released from one another. In, for instance, children's helmets, such release force may thereby be adapted to meet relevant requirements, and the helmet be thus rendered usable and operate with completely adequate function irrespective of the weight of the child.
SUMMARY OF THE INVENTION
The present invention provides to an arrangement in which the above-outlined needs are satisfied. This is attained by a yieldable safety connection in which a male portion is inserted into a female portion for separation when both portions are subjected to counter-directed tractive forces exceeding a certain magnitude. The male portion includes a fork-like device having first and second arms, while the female portion includes first and second material portions between which the fork-like device of the male portion is located when the male portion has been inserted in the female portion. Both arms of the male portion and both material portions of the female portion are provided with locking devices, which have abutment surfaces oriented at an oblique angle in relation to the direction of the tractive forces. When the tractive forces are applied, reaction forces are produced at right angles to the direction of the tractive forces, whereupon the cooperating locking devices are resiliently displaced from one another and when the tractive force reaches a predetermined limit the male portion is withdrawn from the female portion. A support body is disposed between the arms of the fork-like device to prevent the arms from being displaced towards one another, the support body being adjustable lengthwise along the arms.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be described in greater detail hereinbelow, with particular reference to a number of Drawings. In the accompanying Drawings:
FIG. 1 is a top plan view of the male portion of a safety catch comprising a male portion and a female portion;
FIG. 2 is a top plan view of the female portion of the safety catch;
FIG. 3 is a view corresponding to that of FIG. 1 with the male portion inserted in the female portion;
FIGS. 4a, b are top plan views of the male portion in one alternative embodiment;
FIG. 5 shows the male portion according to FIGS. 4a, 4b seen from the side; and
FIG. 6 is a section taken along the line A--A in FIG. 5.
DETAILED DESCRIPTION
The embodiments of the present invention shown in the Drawings include a male portion 20 and a female portion 30. The male portion consists of a fork-like device 40 with a first arm 21 and a second arm 22 which, at their one end regions 45 and 46, are connected to a web portion 25 and, at their other, outer end regions 47, 48 form the free ends of the fork-like device. In the illustrated embodime
REFERENCES:
patent: 3585692 (1971-06-01), Le Mire
patent: 4012155 (1977-03-01), Morris
patent: 4559679 (1985-12-01), Downey
patent: 4694544 (1987-09-01), Chapman
Brandel Lars
Sakran Victor N.
LandOfFree
Safety catch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety catch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety catch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1811879