초록 ▼

A safety cover for mounting upon a suction drain that removes water from a jetted tub or spa. The safety cover can handle a high fluid flow intake rate and has a relatively small size, yet is unlikely to entangle the hair of a user and can pass the industry standard five pound pull test. The safety

A safety cover for mounting upon a suction drain that removes water from a jetted tub or spa. The safety cover can handle a high fluid flow intake rate and has a relatively small size, yet is unlikely to entangle the hair of a user and can pass the industry standard five pound pull test. The safety cover has at least one internal wall that acts as a guide vane thereby advantageously tending to reduce turbulence and vortexing of the water as it passes through the cover and into the suction drain. Because turbulence and vortexing of the water is reduced, the possibility that a user's hair could extend through the cover and become entangled thereunder is likewise reduced. Further, because of the stabilized fluid flow inside the safety cover, the cover can have a size that is smaller than otherwise possible without the anti-vortexing interior wall. The interior wall also can extend from the cover to a supporting base to advantageously increase the structural strength of the cover.

대표청구항 ▼

[ We claim:] [1.] A safety cover for a suction drain in a jetted spa or tub intended to reduce the risk that an occupant's hair could become entangled within a water stream entering the drain, comprising:a base mountable to an interior surface of the tub or spa, the base having a central opening whi

[ We claim:] [1.] A safety cover for a suction drain in a jetted spa or tub intended to reduce the risk that an occupant's hair could become entangled within a water stream entering the drain, comprising:a base mountable to an interior surface of the tub or spa, the base having a central opening which communicates with the suction drain, said base extending generally parallel to the underlying spa surface and having a peripheral edge;a cover having a face wall spaced from the base and a sidewall extending from the face wall and having a free peripheral edge contacting said base in the region of its periphery to define a closed chamber enclosing said opening, said face wall and sidewall being perforated to act as a screen in the way of entry of hair into the chamber;a fastener connecting said face wall to said base to draw said cover into secure contact against said base;an interior wall mounted within said chamber and shaped to act as a flow directing vane with respect to water entering the chamber and passing through the opening to the suction drain to resist the development of a water vortex within said chamber, wherein the perforated character of said walls and the water flow across said interior wall within said chamber resist entrapment of the occupant's hair within the water stream entering the suction drain; anda second interior wall forming another vane extending from the face wall of said cover toward said base, wherein said second interior wall intersecting with said first interior wall to divide said cover into four portions, the total area of the holes in each portion of said cover equaling the total area of the holes in each other portion of said cover.