Abstract: A hydrofoil stabilizer for a marine craft employing an outboard or inboard/outboard motor. The stabilizer is specially shaped to have a central position adapted to attach to an existing cavitation plate of the motor, two upwardly sloping portions the angles of which approximate the bottom of the marine craft, and two peripheral portions adapted to improve the stability of the craft by running in relatively less turbulent water away from the immediate vicinity of the propellor. The stabilizer improves the turning and tracking characteristics of the craft.
Abstract: A swatch book for displaying sample swatches of paper. The book has non-integral front and rear covers of paper. The rear sheet has integral panels which are folded to form a sleeve which encompasses the front cover and the swatches of paper. Grommets extend through the sleeve, the cover sheets and the sample swatches to form a permanently bound book.
Abstract: A soap dispenser utilizes an infrared sensor for detecting the presence of an object upon which soap will be dispensed. There is a source of soap and a pump connected thereto. A voltage regulator having an adjustable output voltage to control the force at which soap is dispensed, and which may be considered a method of accommodating viscosity of soap, is connected to the pump. The sensor controls operation of the pump and there is an adjustable timing circuit to control the amount of time the pump operates and hence the volume of soap dispensed. A prime circuit is included to prime the pump as conditions require.
Abstract: In a direct forward throw sweeper, improvements related to a door for closing the opening into the hopper permit backing away from a debris receptacle with the hopper door open after dumping a load of debris without damage to the machine. An attachment part is provided for connecting a vacuum pickup wand to the debris hopper. Associated improvements to a related air filter chamber provide improved dust control while dumping the hopper and convenient access for servicing a dust accumulation space in the bottom of the filter chamber.
July 8, 1992
Date of Patent:
April 19, 1994
Robert D. Hennessey, Timothy G. La Rocque
Abstract: A fluid connector comprises a pair of retainers, with a first retainer having a pair of resilient legs extending axially and radially inwardly from an axially outer portion of a housing bore. The first retainer abuts a first upset portion on the tube to secure the tube within the housing. A secondary retainer is positioned axially outwardly of the first retainer, and has legs which also abut a second upset portion on the tube also securing the tube within the housing. The secondary retainer legs preferably extend parallel to the axis of the tube, such that they provide a strong resistance force against pull-out of the tube.
Abstract: A flow distribution and control device for connection to a fluid supply includes an inlet assembly and an outlet assembly. A valve member is positioned in a flow path between the inlet and outlet assemblies and moves to an open position in response to increased differential pressure between the inlet and outlet assemblies. Discharge holes selectively permit communication between the inlet and outlet assemblies when the valve member is in the open position. A cylindrical flow distribution ring seated in the outlet assembly defines a radial collector gap that has a larger diameter than that of adjacent radial interior surfaces of the ring and inlet assembly. The flow path is open when the valve member is in an open position and at least one of the discharge holes is exposed to the collector gap.
Abstract: An adjustable equalizer network has a series chain of N all pass amplifier stages driving N+1 scaling circuits connected to a final summing circuit that adjusts the frequency response at M+1 frequency control points to obtain a predetermined ripple free minimum phase shift frequency response over a given frequency range. The scaling circuits have scaling coefficients, of magnitude and sign determined by Fourier analysis and an appropriate truncation function, such that the filter has a pass band representative of M+1 contiguous bands conjointly encompassing the frequency range. Calculation of the scaling coefficients and control of the scaling circuits is accomplished through digital computation and manipulation. Some embodiments may use passive circuits or linear analogue circuits as scaling circuits, controlled manually or by a computing device.
July 27, 1992
Date of Patent:
March 22, 1994
Knowles Electronics, Inc.
Richard W. Peters, John G. Christopher, John W. Staples
Abstract: A toilet device flush valve has a body with an inlet and an outlet and a valve seat in the body positioned therebetween. There is a movable diaphragm which closes upon the valve seat to control flow between the inlet and the outlet. A piston is attached to the movable diaphragm and there is a flow control ring mounted on the piston. The flow control ring includes water passages forming the sole flow path between the inlet and the outlet when the piston is in the open position. The passages on the flow control ring are sized to correspond to the desired flow rate through the flush valve. The passages extend in a direction to give the water flowing therethrough both axial and circumferential components to dissipate power in the water flowing through the flush valve to provide a relatively constant flow rate which is independent of the water pressure applied at the flush valve inlet.
Abstract: A convertible sweeper has a main rotating cylindrical brush and a second rotatable cylindrical tool. The second tool is movable between a first position in front of the main brush where it rotates to assist in very effectively loading debris comprised mainly of dry leaves, paper, etc. into the hopper, and a second position in the upper part of the hopper entrance. There it may be held stationary when the debris to be swept is mainly sand, which is very efficiently swept by the main brush alone, or it may be rotated if the debris also includes some light material, because such rotation assists to a degree in loading that material.
Abstract: An apparatus and method for removing or cutting wool from a skin, the apparatus comprising a conveyor to move the skin to a heated cutter element. The cutter element comprises a plurality of individually supported and heated electrical wires, and means are provided for reciprocating the cutter element. Each heated electrical wire may be individually controlled so that the wire is maintained at the cutting temperature while cutting, and will not overheat when not cutting. The cutting element is reciprocated so that the wire cutting the edge of the skin will not have one portion cutting and the other portion not overheated.
Abstract: A positioning apparatus for positioning and retaining an edge protector at an edge of a package to be looped with a strapping comprising an edge protector magazine for retaining stacked, nested edge protectors including a magazine delivery station for systematically dispensing individual edge protectors to be dispensed, a saddle shuttle assembly for transporting each individual edge protector from the magazine delivery station to the edge of the package, the saddle shuttle assembly including at least one forwardly extending clip orienting and retaining each individual edge protector on the saddle shuttle assembly while it is being transported to the package edge, a pusher for selectively driving an edge protector from the magazine delivery station onto the saddle shuttle assembly, the pusher including a pushing surface normal to the longitudinal axis of the edge protector and a device to reciprocate the pusher between the magazine delivery station and the saddle shuttle assembly and a retainer bar for applyin
Abstract: A toilet tank ball cock is designed for use in a toilet tank having an operating lever, a flush valve controlled by the operating lever and a water supply, with the ball cock regulating the supply of water to the tank. The ball cock includes a vertical riser column communicating with the water supply and a water control valve regulating the flow of water from the water supply to the toilet tank. There is a float movable on the riser column and coupled to the water control valve such that downward movement of the float to a selected level opens the water control valve to fill the toilet tank and upward movement of the float to a selected upper level closes the water control valve to stop filling the tank. The float has openings therein in communication with the tank interior. The openings are located to provide for water flow from the float as the water level in the tank drops.
Abstract: End tooling for forming easy open can ends has cooperatively-engageable upper and lower tooling defining a plurality of stations. Each station has appropriate punches and dies for progressively converting shells indexed by conveyor into easy open can ends. The tooling is adapted to convert ends of multiple diameters. The punch caps and die caps at each station have cylindrical bodies sized to engage and align a turned edge of a shell. The caps also have one or more arcuate grooves in the end face thereof for receiving the turned edge of ends having a diameter smaller than that of the cap.
Abstract: A hydrocarbon liquid identification and tracing system based on fluorescence, high pressure liquid chromatography or thin layer chromatography and N-substituted or N,N'-dialkyl-4-amino-1,8-naphthalimides as the fluorophores is described.The liquid fuel tracing system based on the above naphthalimides is based on the 2.sup.n -1 binomial system and provides inexpensive and extremely accurate and sensitive monitoring and source identification.
Abstract: A surface maintenance machine includes a cylindrical brush mounted in the machine for rotation about a generally horizontal axis extending transverse to the direction of machine movement. A recirculation flap is attached to the machine and extends generally coextensively with the brush and parallel thereto. The recirculation flap is normally yieldingly urged toward the brush, with contact between the flap and a floor obstacle causing the flap to move, against the force of its mounting springs, away from the brush.
Abstract: The residual of an easy open can end is controlled by a band heater mounted on the anvil in conversion system tooling. The separation at closest approach of the score and anvil in the conversion tooling is altered as necessary by thermal expansion and contraction of the anvil as determined by the power supplied to the band heater. An electrical circuit supplies power to the heater and includes a thermocouple for maintaining the anvil at a set temperature. A loop control periodically diverts a finished end from the conveyor, measures the residual and adjusts power to the heater if necessary to bring the residual into specification.
Abstract: Injector for injecting a liquid treatment chemical into a moving body of liquid in a pipe and comprising an elongated hollow quill member having a stem portion of a length to span substantially the inside diameter of the pipe; and said stem being provided along substantially its entire length with a substantially uniform set of jet openings for injecting the cross-section of the body of liquid with a multiplicity of chemical treatment jet streams so that the cross section of the body of liquid will be treated equally across its diametrical cross section.