Jacuzzi Inc.

Jacuzzi Bros. Incorporated

Jacuzzi Brothers, Inc.

Robert D Wilkes

Virgil J Jacuzzi

David Earl Ufford

Eugene C Smith

Alan H Peters

Joe D Pucket

Virgil J Waldorf

Joeab A Robertson

A pump for use with a hydrotherapy tub or spa is provided wherein the compression of the pump seal located between the impeller and the drive shaft opening is controllable such that a minimum compression and thus minimum heat generation occurs at a no-load or dry condition of the pump, but maximum compression and thus maximum sealing occurs at a full-load condition. The impeller is mounted on the drive shaft in an axially movable manner with the impeller eye facing the motor so that axial loading by the impeller under load is toward the motor thus compressing the interposed seal.

Plastic centrifugal pump

An air control valve is provided for use in a spa to regulate the flow of air to a hydrotherapy jet in which a recessed control knob is accessible at a rim of the spa to actuate a movable valve member to selectively constrict or dilate an air flow passage through the valve body which has an air intake opening underneath the spa rim to isolate the noise associated with the intake opening from the user.

Air control valve

A submersible electric D.C. motor is provided which has a housing that seals the motor from the surrounding water and holds in a controlled atmosphere which is made to be low in oxygen content and to have free water vapor. Magnetic means are provided to transmit mechanical energy through the housing and liquid means are provided to remove heat from the motor.

Support system for a submersible D.C. motor

A submersible pump check valve having a housing connected to the discharge port of a submerged pump has a poppet retained by four legs operable as cantilever springs and which interact with cam surfaces within the housing to prevent removal during normal operation of the pump but to afford selective removal from the housing for cleaning or replacement of the sealing ring without removing said housing from said submerged pump. Further, the pump need not be removed or otherwise disassembled to remove the poppet.

Submersible pump check valve

A cartridge filter unit particularly adapted for use in a swimming pool water purification system because of its modular design, includes a readily accessible filter body. By removing a cover, a core assembly including a solids entrapping device and an inexpensive, disposable filter cartridge contained therein may be easily withdrawn for cleaning or replacement without allowing solid pollutants collected by the filter to re-enter the system.

Growing community of inventors

Little Rock, AR, United States of America

Robert D Wilkes