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US 2011/0215574 A1Published application
Tightening device with collar
AssigneeEtablissements Caillau
InventorsFabrice Prevot, Cyriaque Fouqueray, Mickaël Gapteau
Life of this patent
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AssigneeEtablissements Caillau
InventorsFabrice Prevot, Cyriaque Fouqueray, Mickaël Gapteau
Estimating the term…
The collar has a substantially cylindrical metal belt (16) and at least one pair of lugs (18, 20) that project relative to said belt and that define a tightening space (22) between them. It also has tightening equipment for bringing the lugs together. Each of the lugs (18, 20) has an extension (19, 21) that is folded back towards the back of said lug, away from the other lug, and that is provided with a hole (22B, 23B) for receiving the tightening rod (24) and the tightening equipment, which hole is situated facing a hole (22A, 23A) in the front portion of the same lug. A bracing space (26, 27) is provided between the folded-back extension and said front portion. Each of the holes (22B, 22A) in the extension (19) and in the front portion (18A) has an edge portion provided with a visor (26B, 26A, 27A) that extends into the bracing space (26, 27), and an edge portion that is not provided with a visor and that extends facing the visor of the other hole. Advantageously, the front portion of each of the lugs has a concave shape over the entire height of the holes.
A clamping device comprising a collar suitable for being placed around objects to be clamped, the collar having a substantially cylindrical metal belt, at least one pair of lugs that project relative to said belt and that define a tightening space between their respective front portions of said lugs, and at least one tightening rod and two tightening members co-operating with said rod, and with respective ones of bearing portions of the two lugs of the pair, so as to bring said lugs together in such a manner as to cause the belt to be tightened by reducing its diameter, at least a first one of the lugs of the pair being a lug having an extension, the bearing portion of which first lug is formed in an extension of said first lug, which extension is folded back towards the back of said first lug, away from the second lug of the pair of lugs, and is provided with a hole for receiving the tightening rod and that is situated facing a hole in the front portion of said first lug, a bracing space being provided between the folded-back extension and said front portion,
A clamping device comprising a collar suitable for being placed around objects to be clamped, the collar having a substantially cylindrical metal belt, at least one pair of lugs that project relative to said belt and that define a tightening space between respective front portions of said lugs, and at least one tightening rod and two tightening members co-operating with said rod, and with respective ones of bearing portions of the two lugs of the pair, so as to bring said lugs together in such a manner as to cause the belt to be tightened by reducing its diameter, wherein, when the collar is in the non-tightened state, the width of the tightening space, as measured in the longitudinal direction of the tightening rod, is greater around said rod than in regions of the lugs that are remote from the tightening rod over at least substantially the entire height of the tightening rod, as measured perpendicularly to an axis of the belt and to a longitudinal direction of said rod.
Dependencies are inferred from the claim text.