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Method and a device for hooking a balloon envelope to a fastener means

  • US 4,705,235 A
  • Filed: 04/14/1986
  • Issued: 11/10/1987
  • Est. Priority Date: 04/12/1985
  • Status: Expired due to Term
First Claim
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1. A method for hooking an envelope comprising a flexible sheath (1) to a fastener device, comprisingprovided a fastener (2) made of rigid material having an outer peripheral side provided with an annular groove (3),tightening the sheath at the fastener (2) and locking the sheath in place in such a manner that it follows the shape of the groove (3) of said fastener by means of a tightening collar (4) made of a substantially inextensible material having high tensile strength and a cross-section designed to fill the annular groove to a specific depth,placing an annular seal extending over the entire periphery of the tightening collar (4) and in contact with the outer peripheral side (4a) of said collar,maintaining said annular seal (5) in place over substantially all of its outer peripheral side (5a) by a retaining strap (6) of a substantially inextensible material having high tensile strength and adapted to guide the deformation of said annular seal in a preferred direction for compressing the sidewalls (3a) of said annular groove (3),whereby said seal may undergo compressive radial deformations for imparting to said tightening collar a degree of freedom with respect to the sidewalls (3a) of the groove (3) averting compressive force on said collar.

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