Crimping ring and method for making same
AssigneeEtablissements Caillau
InventorsMichel Andre, Pascal Detable, Gino Leze
Life of this patent
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Abstract
A crimping ring comprises a rolled-up piece of metal strip (10). A first connection means formed at the first end (12) comprises a first setback overlap surface (16) together with at least one female member (18) recessed from said first surface. A second connection means formed at the second end (14) comprises a second setback overlap surface (20) together with a male member (22) formed to project from said second surface. On connection, the male member (22) is engaged in the female member (18) and is fixed thereto, while the overlap surfaces (16, 20) are disposed one against the other so as to define a connection zone of thickness that is substantially equal to the thickness of the main portion of the strip.
Claims14
A crimping ring comprising a rolled-up piece of metal strip (10) whose two ends (12, 14;
- 52, 54;
- 112, 114;
- 152, 154;
- 212, 214;
- 252, 254;
- 312, 314) include respective first and second connection means that co-operate with each other to interconnect said ends,
- the ring being characterized in that the first connection means comprise a first overlap surface (16, 56, 116, 156, 256, 316) formed in the first end of the piece of strip as a setback from the first face of said piece of strip, together with at least one female member (18, 58, 118A, 118B, 158, 218, 258, 318) recessed from said first overlap surface, while the second connection means comprises a second overlap surface (20, 60, 120, 260) formed in the second end of the piece of strip as a setback from the second face of said piece of strip, together with a male member (22, 62, 122A, 122B, 162, 222, 262, 312) projecting from said second overlap surface, and in that the male member is engaged in the female member and fixed thereto while the overlap surfaces are placed one against the other so as to define a connection zone whose thickness (EZ) is substantially equal to the thickness (E) of the main portion of the piece of strip.
A method of manufacturing a crimping ring in which first and second connection means (12, 14;
- 52, 54;
- 112, 114;
- 152, 154;
- 212, 214;
- 252, 254;
- 312, 314) are formed respectively at the first and second ends of a piece of metal strip (10), and in which these ends are connected together by making said first and second connection means co-operate with each other,
- the method being characterized in that a first setback is formed in the first end of the piece of strip from the first face thereof, the surface of the first setback defining a first overlap surface (16, 56, 116, 156, 256, 316), at least one female member (18, 58, 118A, 118B, 158, 218, 258, 318) is recessed from said first overlap surface, a second setback is formed in the second end of the piece of strip from the second face thereof, the surface of this second setback defining a second overlap surface (20, 60, 120, 160, 260), at least one male member (22, 62, 122A, 122B, 162, 222, 262, 312) is formed to project from said second overlap surface, the overlap surfaces are placed one against the other, the male member is engaged in the female member, and said male member is fixed to said female member, and in that the first and second setbacks are made in such a manner that the thickness (EZ) of the ring in the connection zone defined by the overlap surfaces disposed one against the other is substantially equal to the thickness (E) of the main portion of the piece of strip.
Dependencies are inferred from the claim text.