Coaxial valve-type alternating pump especially for boats...

F - Mech Eng,Light,Heat,Weapons – 04 – B

Patent

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F04B 33/00 (2006.01) F04B 39/10 (2006.01)

Patent

CA 2271827

Pump (10) of plastic material especially for a rubber dinghy and the like comprising a cylinder (11) with a double-acting alternating piston (13) and a small oblong cylinder (15) alongside the first, closed by heads (24) with packings (26) that also act as valves made with a central annular area containing holes (18, 30) completely covered by an elastic discoid diaphragm (21, 31), the valves (31) of the cylinder (11) communicating with the environment and the valves (19) of the small cylinder communicating with chambers (60, 61) that form at the ends of the cylinder (11) so that, operating the piston (13) by means of an overgear with crank, an electric motor or the propulsor of a rubber dinghy, compressed air is generated and this passing through a centrally situated branch (33) in the cylinder (19), can be supplied to the rubber dinghy or other means requiring it.

L'invention concerne une pompe (10) en matière plastique, qui est destinée spécialement à un canot pneumatique ou à une embarcation similaire et qui comprend les éléments suivants: un cylindre (11), qui est muni d'un piston (13) alternatif à double effet, et un petit cylindre oblong (15), qui est situé le long du bord du premier cylindre. Ce dernier est clos par des têtes (24) munies de garnitures d'étanchéité (26) qui font également office de soupapes constituées d'une zone annulaire centrale contenant des trous (18, 30), lesquels sont complètement recouverts d'une membrane (21, 31) discoïde élastique. Les soupapes (31) dudit cylindre (11) sont en communication avec le milieu ambiant et les soupapes (19) dudit petit cylindre sont en communication avec des chambres (60, 61) qui se forment aux extrémités dudit cylindre (11) de façon que, lorsque ledit piston (13) est mis en fonctionnement par un plateau muni de manivelles, d'un moteur électrique ou du propulseur dudit canot pneumatique, de l'air comprimé soit généré, passe par un embranchement (33) placé centralement dans le cylindre (19) et arrive audit canot pneumatique ou à d'autres éléments qui en ont besoin.

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