Backpack with back cushioning means

A - Human Necessities – 45 – F

Patent

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Details

A45F 3/04 (2006.01)

Patent

CA 2569852

A backpack is provided with a cushioning, inflatable bladder (21), the lower part of which extends across the bottom (15) and an upwardly extending part so as when inflated, it generally conforms to the shape of the curvature of the thoracic region of the spine. The bladder is enclosed within a zippered bag (24) wrapped around it that is joined to the outer surface of the backpack. A pump (31) is provided for inflating the bladder. The pump is hand operated with a bulb-shaped configuration and connected to the bladder by means of a tube (32). An air valve (33) connected to the tube controls the amount of air flow into the bladder and maintains the bladder in inflated position after air has been pumped in, and also permits deflation of the bladder. The pump and valve may be stored in a side pocket (34) of the backpack provided for that purpose. Optionally, the pump could be battery operated.

L'invention concerne un sac à dos qui comprend une vessie d'amortissement gonflable (21). La vessie d'amortissement comporte une partie basse qui s'étend le long du segment inférieur (15) et une partie qui s'étend vers le haut, de sorte que, une fois gonflée, la vessie épouse généralement la courbure du dos, à hauteur de la cage thoracique. La vessie est enfermée dans un sac à fermeture à glissière (24) qui l'enveloppe et qui est relié à la surface extérieure du sac à dos. Une pompe (31) manuelle permet de gonfler la vessie. La pompe, en forme de poire, est reliée à la vessie à l'aide d'un tube (32). Un clapet d'air (33) relié au tube régule le débit d'air dans la vessie et maintient la vessie en état de gonflage après pénétration de l'air de gonflage. Ce clapet d'air permet par ailleurs de dégonfler la vessie. La pompe et le clapet peuvent être rangés dans une poche latérale (34) du sac à dos, dédiée à cet effet. La pompe peut éventuellement fonctionner par pile.

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