Abstract: A system and method for regulating an adjustable DC supply and continuously and remotely monitoring measurements of reference cell potential and/or current for cathodic protection of a structure is disclosed. Cathodic protection devices use a logic circuit and/or microprocessor based monitor for removing identifiable components and noise from the system to arrive at the DC bias. A method is implemented herein to arrive at the true value of a reference cell potential measurement determined within a sample collection point or window calculated for the reference cell signal while the impressed current is still being applied. This measurement can be compared to a calculated shutdown and is communicated to a central computer accessible via a network such as the Internet. All output is automatically regulated and checked for target window accuracy using an automated voting scheme.

Abstract: A system and method for regulating an adjustable DC supply and continuously and remotely monitoring measurements of reference cell potential and/or current for cathodic protection of a structure is disclosed. Cathodic protection devices use a logic circuit and/or microprocessor based monitor for removing identifiable components and noise from the system to arrive at the DC bias. A method is implemented herein to arrive at the true value of a reference cell potential measurement determined within a sample collection point or window calculated for the reference cell signal while the impressed current is still being applied. This measurement can be compared to a calculated shutdown and is communicated to a central computer accessible via a network such as the Internet. All output is automatically regulated and checked for target window accuracy using an automated voting scheme.

Abstract: A cutter shell for cutting a circular opening in a metal object formed of a tubular boring portion and a head portion. The boring portion has a tubular sidewall and teeth at the forward circumferential end. The sidewall is of thickness not greater than the teeth. The head portion has an outer circumferential perimeter secured to the tubular portion rearward circumferential end, the head portion being attachable to a boring bar by which the cutter shell is rotated. A circumferential abrasive band is affixed to the exterior circumferential surface of the tubular sidewall for engagement with the wall of a hole as the hole is cut in an object by the teeth to smooth and round out the hole for improved cylindricality.

Abstract: An intravascular catheter system has a catheter with a rotating tip and a fluid path to permit fluid to be ejected around the tip for cooling the tip. The system has an electric motor for rotating the catheter tip and a second motor for con trolling the fluid flow. A control circuit sets the speed of the two motors and also monitors the speed and other parameters for operational errors. If an error is detected for either motor, the entire system, including both motors, is automatically shut down. The control circuit utilizes two processors, a main processor for system control and speed control of both motors and a slave processor for monitoring the speed of the catheter motor. The main processor provides data regarding desired speed to the catheter motor and to the slave processor and the slave processor provides signals the main processor when it detects a speed error.

Abstract: A cutter shell for cutting a circular opening in a metal object formed of a unitary metallic member having a tubular boring portion and an inverted dish shaped head portion. The boring portion has a tubular sidewall and teeth at the forward circumferential end. The sidewall is of thickness not greater than the teeth. The head portion has an outer circumferential perimeter secured to the tubular portion rearward circumferential end. The head portion has an inner concave surface as viewed through the tubular boring portion and an outer convex surface. The thickness of the head portion is not substantially greater than that of the boring portion tubular sidewall so that the head portion deflects inwardly in response to boring pressure, the deflection being radially transferred to the boring portion tubular sidewall to stiffen the sidewall and hold it in more perfect circularity during boring action.

Abstract: An intravascular catheter system has a catheter with a rotating tip and a fluid path to permit fluid to be ejected around the tip for cooling the tip. The system has an electric motor for rotating the catheter tip and a second motor for con trolling the fluid flow. A control circuit sets the speed of the two motors and also monitors the speed and other parameters for operational errors. If an error is detected for either motor, the entire system, including both motors, is automatically shut down. The control circuit utilizes two processors, a main processor for system control and speed control of both motors and a slave processor for monitoring the speed of the catheter motor. The main processor provides data regarding desired speed to the catheter motor and to the slave processor and the slave processor provides signals the main processor when it detects a speed error.

Abstract: A control system for a chiropractic adjustment instrument comprising a microprocessor programmable to control various parameters of an adjustor head to be driven against the spinal vertebrate of a patient. A solenoid is associated with the adjustor head which is energized by a capacitor. The capacitor is charged by a charging circuit to the programmed voltage level. The pressure of the adjustor head against the patient is sensed and when the pressure reaches a predetermined level, the capacitor is discharged to the solenoid to drive the adjustor head against the spinal vertebrate of the patient.

Abstract: A shock-absorbing innersole for use in footwear, which innersole comprises an innersole body composed of a substantially nondeformable elastomeric-type urethane cellular polymer, having a contoured molded heel and arch section and a substantially flat sheet containing a ball and toe section, the innersole having one or more shock-absorbing inserts in the innersole positioned in the heel, ball or both areas of the innersole, the insert composed of a solid elastomeric polymer which has greater shock-absorbing properties and greater surface tack than the elastomeric urethane of the innersole body.

Abstract: For use in a hot tapping system having a plug receiving flange providing communication into the interior of a pipeline, a completion machine for attachment to the flange providing means to install or retrieve a plug from within the flange, the machine being formed of an elongated cylindrical housing having a flange portion to removably sealably engage the plug receiving flange and the housing forming a hydraulic cylinder, an elongated tubular control bar reciprocally and non-rotatably received within the housing, a piston within the cylinder secured to the control bar by which the control bar is hydraulically displaced, and a rotatable retention rod telescopically received within the control bar and having a threaded end to attach to a plug, the retention rod being secured to a plug for placement of the plug into a flange or the removal therefrom.

Abstract: A shoe-innersole material for use in providing cushioning and support in footwear, and a method of manufacturing the shoe-innersole material, the shoe innersole comprising a heel and an arch section composed of a molded, elastomeric polyurethane foam material of low compression set, the heel and arch sections directly bonded in the molding process to a full-sole material composed either of foam or a solid, flexible sheet material.

Abstract: A shock-absorbing innersole for use in footwear, which innersole comprises an innersole body composed of a substantially nondeformable elastomeric-type urethane cellular polymer, having a contoured molded heel and arch section and a substantially flat sheet containing a ball and toe section, the innersole having one or more shock-absorbing inserts in the innersole positioned in the heel, ball or both areas of the innersole, the insert composed of a solid elastomeric polymer which has greater shock-absorbing properties and greater surface tack than the elastomeric urethane of the innersole body.

Abstract: A shoe-innersole material for use in providing cushioning and support in footwear, and a method of manufacturing the shoe-innersole material, the shoe innersole comprising a heel and an arch section composed of a molded, elastomeric polyurethane foam material of low compression set, the heel and arch sections directly bonded in the molding process to a full-sole material composed either of foam or a solid, flexible sheet material.

Abstract: A shoe-innersole material for use in providing cushioning and support in footwear, and a method of manufacturing the shoe-innersole material, the shoe innersole comprising a heel and an arch section composed of a molded, elastomeric polyurethane foam material of low compression set, the heel and arch sections directly bonded in the molding process to a full-sole material composed either of foam or a solid, flexible sheet material.

Abstract: An underwater tapping machine having a body equipped for attachment to a fitting secured to a pipeline and a rotatable boring bar within the body, a gear case affixed to the body to activate the boring bar, a containment vessel supported by the tapping machine body having a first opening communicating with the vessel exterior and thus to the pressure of fluid in which the tapping machine is employed, the containment vessel having a second opening and a fluid barrier pressure transmitting member dividing the interior of the vessel into a first portion having the first opening therein and a second portion communicating with the second opening, the second portion having liquid lubricant therein, and conduits extending from the containment vessel second opening to the interior of the tapping machine body and gear case so that the pressure of fluid in which the tapping machine is employed is applied by way of the pressure transmitting member to the liquid lubricant and thus to the interior of the tapping machine t

Abstract: An inexpensive, cellular plastic mold and method of preparation, wherein the plastic mold comprises male and female mold elements which define a mold cavity therebetween, each of the elements comprising a rigid thermoplastic foam or cellular board material having a smooth, integral, solid layer of a plastic material forming the facing surface of the mold cavity and a relatively thick, solid, supporting layer of a plastic material forming the back surface of the mold elements.

Abstract: A closure for a cylindrical opening having improved venting means including a plug body for removably positioning within and sealing a cylindrical opening, the body having an axial opening therethrough and having means when the plug is within the cylindrical opening to seal against pressure, a tubular valve element slidably received in the plug body opening, the element having at least one radial opening adjacent to and spaced from its closed inner end, a spring normally biasing the tubular element towards the plug outer end so that the radial opening is sealed by the wall of the plug member axial opening and a push rod for displacing the tubular element inwardly to expose the radial opening to the interior of the plug body to vent fluid pressure.