Rule Industries, Inc.

William N Anastos

Stephen B Boyd

James T Burrill

Kenneth J LeBlanc

W Gordon White

Max Scholz

Robert J Dowding

A pump control system for adjusting the frequency of operation of a pump motor in accordance with the demand on the pump includes means for periodically actuating the pump motor to initiate operation of the pump at periodic intervals; sensor means for sensing the condition of the operating pump motor; and means responsive to the sensor means for adjusting the periodic interval to conform the operation of the pump motor to demand on the pump.

Automatic pump control system with variable test cycle initiation

Soft-start pump control system

A method of preventing air bubbles in a compass equipped with fluid expansion capability, wherein a compass unit is assembled with a fluid expansion diaphragm; the compass unit is filled with fluid expanding the diaphragm, and sealed while maintaining the diaphragm in its expanded state for preventing air bubbles in reduced pressure and/or reduced temperature conditions, without significantly changing the basic structure of the compass.

Air bubble free compass and method of manufacturing same

Disclosed herein is an apparatus and method for controlling electrically powered liquid-moving pumps, particularly bilge and sump pumps. The apparatus is characterized by the fact that no portion thereof need be located in the hostile environment of the bilge or sump served by the pump controlled thereby.

Pump control apparatus and method

Pump control responsive to timer, delay circuit and motor current

A horn for connection to a pressurized fluid container for sounding multiple tones has a horn body defining a sound chamber and at least one tone altering aperture extending through the horn body into the sound chamber, a sound producing mechanism located within the horn body adjacent the sound chamber, and a trigger assembly for actuating the pressurized fluid container for release of pressurized fluid to flow through the sound producing mechanism into the sound chamber to produce a sound. The horn, when the trigger mechanism is actuated, produces sound having a first tone when the tone altering aperture is unobstructed and a second tone when the aperture is obstructed.

Multitone horn

A magnetic compass comprises: a gimbal mounted direct read card supported on a bearing in the equatorial plane of the compass in a compass bowl; and a housing having a base to which the compass bowl and corrector magnets are mounted; the corrector magnets being positioned above the base beside the bowl for access without moving the compass; means for supporting the corrector magnets located on three axes, one axis parallel to the lubber line and the equatorial plane of the compass in a horizontal orientation of the housing, a second normal to the lubber line and parallel to the equatorial plane and a third normal to the equatorial plane in a horizontal orientation of the housing and parallel to the lubber line and the equatorial plane in a vertical orientation of the housing; said corrector magnets mounted on two of said axes, said second axis and the one of said first and third axes parallel to said lubber line in the horizontal or vertical orientation selected for mounting said compass; the compass card assembly and the compass card extending below the equatorial plane at its periphery and having a mass therebelow at least as great as the mass above the plane and the housing positioned above the equatorial plane on one side below the equatorial plane on the other side for viewing the compass card at and below the equatorial plane; and light emitting diodes being provided within the housing on the one side for lighting the card and a non-magnetic battery power source being provided in the housing for powering the light emitting diodes.

Growing community of inventors

Belmont, MA, United States of America

William N Anastos