Buckles – buttons – clasps – etc. – Bale and package ties – hose clamps – With tighteners
Patent
1996-08-13
1998-01-06
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Bale and package ties, hose clamps
With tighteners
24 20TT, 24271, B65D 6300
Patent
active
057040982
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a clamping collar for a tubular part.
Clamping collars are increasingly frequently designed to ensure symmetrical clamping. To this end, they comprise a belt of length substantially close to the perimeter of the tube to be clamped, and an arcuate screen on which the two ends of the belt are slid.
Advantageously, the arcuate screen comprises two racks which are symmetrical to one another, and the end parts of the belt each comprise a tooth or tab susceptible of engaging in the corresponding rack to block the collar in a clamped position. These collars are tightened by drawing the two ends of the belt towards one another over the arcuate screen. The tightening of these collars can only be adjusted by one pitch of the rack. It ensues that if the ideal tightening corresponds to a half pitch of the rack, the tube to be clamped is either insufficiently tightened or overtightened.
One aim of the invention is to provide a clamping collar for a tubular part, providing an ideal tightening corresponding to the tube to be clamped.
The object of the invention is to provide a clamping collar for a tubular part, comprising an arcuate screen, a belt and a tightening means, characterized in that: collar, and its ends are positioned on the arcuate screen, diametral plane of the collar and is connected to the two ends of the belt, and plane of the collar, by drawing the two ends of the belt closer to one another by way of the action of the tightening means, so that the points of the arcuate screen and belt situated in said diametral plane of the collar do not have any relative motion in relation to the part to be clamped.
According to further features of the invention: convolutions, ending in two arms each engaging in one end of the belt; for the tightening means; for the arm of the spring to pass; eyelet intended to receive the angled end of the spring arm; interior of the collar; susceptible of engaging with the belt tabs; ends of the belt and to hold the spring; the arcuate screen flexible; comprise flaps folded parallel to the bottom of the arcuate screen and spaced apart from said bottom by a distance of approximately four times the thickness of the belt.
A further object of the invention is to provide a method for fitting the collar characterized in that it comprises the stages consisting in: increase the diameter of the belt beyond the diameter of the tubular part to be clamped; means bring the belt ends closer together to reduce the diameter of the belt below the diameter of the part to be clamped.
According to a feature of the invention, the different stages are carried out by means of a pliers type tool.
Another object of the invention is to provide a pliers for fitting and removing the collar, characterized in that it comprises a nose including a recess intended to receive the spring, and a nose bearing a finger intended to insert itself, when the pliers is closed, into the axial space of the spring to increase the diameter thereof, thus spreading apart the arms of the spring.
According to another feature of the invention, the nose including the recess comprises a right-hand wall constituting an abutment against which the spring rests when the pliers is closed, and a left-hand wall constituting an abutment that retains the spring when the pliers is opened.
According to another feature of the invention, the pliers comprises a finger intended to insert itself into the tightening means and to serve as a pivotal axis to two noses susceptible of spreading apart the two arms of the tightening means.
According to yet another feature of the invention, the pliers comprises two jaws each bearing a finger intended to insert itself into the tightening means and a nose comprising a slanted side intended to cooperate with one arm of the tightening means so that, upon closing the pliers, the two fingers provide axial support to the tightening means and the two slanted sides spread the two arms of the tightening means apart from one another.
Further features and advantages of the invention will be apparen
REFERENCES:
patent: 287755 (1883-10-01), Bradford
patent: 2390232 (1945-12-01), Venditty
patent: 2546098 (1951-03-01), Houghton et al.
patent: 3981049 (1976-09-01), Oetiker
patent: 4480359 (1984-11-01), Koster
patent: 5327618 (1994-07-01), Chene et al.
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