US 12,268,649 B2
Foot spa with disposable pump
Minh Sang Tran, Cambridge (CA); and Chris Alexander, Cambridge (CA)
Assigned to Gulfstream Inc., Cambridge (CA)
Filed by Gulfstream Inc., Cambridge (CA)
Filed on Mar. 18, 2024, as Appl. No. 18/607,621.
Application 18/607,621 is a continuation of application No. 17/021,004, filed on Sep. 15, 2020, granted, now 11,951,069.
Claims priority of provisional application 63/027,737, filed on May 20, 2020.
Prior Publication US 2024/0216218 A1, Jul. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61H 33/00 (2006.01); A47K 3/022 (2006.01); A61H 33/04 (2006.01)
CPC A61H 33/005 (2013.01) [A47K 3/022 (2013.01); A61H 33/0087 (2013.01); A61H 33/04 (2013.01); A61H 2033/046 (2013.01); A61H 2201/1207 (2013.01); A61H 2201/1215 (2013.01); A61H 2201/1238 (2013.01); A61H 2205/12 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A pump for use with a spa, the spa being of the type having
a basin for containing water;
a motor mounted exteriorly of the basin and having a rotating element defining an axis;
a drive hub disposed exteriorly of the basin and coupled to the rotating element for movement therewith, the drive hub having magnetic properties
the pump comprising
a housing disposed in use in an interior of the basin adjacent the drive hub and having a first side and a second side, the first side presenting towards and abutting the basin and the second side opposed in orientation to the first side, the housing defining:
a cavity formed between the first side and the second side having a center and a periphery;
an intake in the second side that communicates with the center of the cavity;
one or more ports defined in the second side and communicating with the periphery;
an impeller defining a plane and being mounted in a recess of the cavity, the impeller having
a set of blades projecting away from the plane, the set of blades being adapted,
upon rotation of the impeller in the recess, to draw water through the intake and eject water through the one or more ports; and
wherein
the impeller includes a first portion that is ferromagnetic and a second portion that is not ferromagnetic, the first and second portions:
being joined together;
being adapted such that rotation of the drive hub causes rotation of the impeller via the magnetic properties; and
abutting one another at a junction that has a portion that is circular and planar, one of the first portion and the second portion being disposed entirely to one side of the planar portion of the junction.