Abstract: An improved boiler water-level controller. According to one aspect of the present invention, a positive blowdown signal is presented to indicate to the operator that the alarm probe is in steam; performing blowdown until this indicator turns on helps ensure that the alarm probe is working properly. According to another aspect of the present invention, the controller uses a novel methodology of sensing water level using conductivity probes. An embodiment of this methodology uses the charging and discharging of a capacitor through a resistive value to sense the presence of water.

Abstract: A face bow assembly including a face bow having a bite fork portion to carry an index trays to be positioned in a patient's mouth. The bow has outwardly extending wings to enable a dentist to support the bow. A vertical indicator rod mounted to the bow helps align the tray horizontally and the indicator rod vertically to the patient's mid-sagittal, while bite impression material on the tray hardens. The upper index tray is then mounted on a platform on a dental articulator. The platform has an incisal line for alignment with an incisal line(s) for adjustability on the upper index tray. The platform also has vertical or horizontal adjustability with a built-in scale.

Abstract: The present invention provides a method and system for detecting and cross-checking faulty sensors in liquid level indicators and controllers. A liquid level indicator and controller in which one embodiment of the present invention operates includes a control unit for controlling the other components of the liquid level indicator and controller, sensors electrically connected to the control unit for sensing the level of a liquid in a vessel, and an indicating device electrically connected to the control unit for displaying the liquid level. The control unit includes a monitor and a fault detector. In operation, the liquid level indicator and controller has two (2) basic modes. The first mode is a monitor mode. In this mode, the liquid level indicator and controller, under the control of the monitor, senses the liquid level in the vessel using the sensors and displays the liquid level on the indicating device. The second mode is a fault detection mode.

Abstract: The present invention provides a method and system for detecting and cross-checking faulty sensors in liquid level indicators and controllers. A liquid level indicator and controller in which one embodiment of the present invention operates includes a control unit for controlling the other components of the liquid level indicator and controller, sensors electrically connected to the control unit for sensing the level of a liquid in a vessel, and an indicating device electrically connected to the control unit for displaying the liquid level. The control unit includes a monitor and a fault detector. In operation, the liquid level indicator and controller has two (2) basic modes. The first mode is a monitor mode. In this mode, the liquid level indicator and controller, under the control of the monitor, senses the liquid level in the vessel using the sensors and displays the liquid level on the indicating device. The second mode is a fault detection mode.

Abstract: An improved boiler water-level controller. According to one aspect of the present invention, a positive blowdown signal is presented to indicate to the operator that the alarm probe is in steam; performing blowdown until this indicator turns on helps ensure that the alarm probe is working properly. According to another aspect of the present invention, the controller uses a novel methodology of sensing water level using conductivity probes. An embodiment of this methodology uses the charging and discharging of a capacitor through a resistive value to sense the presence of water.

Abstract: The disclosed waxing guide is in the form of a thin flat element having a central line formed thereon. The guide is placed beneath the dental cast with the central line centered between maxillary central incisors on the dental cast. Lines spaced outwardly from the central line indicate the apparent width of the central incisor, the adjacent lateral incisor, and the adjacent canine tooth and first bicuspid, when viewed from the front. Each of the spaces has the same ratio of 1:1.618 with the adjacent spaces.

Abstract: Dental apparatus which can determine a patient-specific reference plane so that the patient's teeth can be aesthetically oriented to an aesthetic axis-horizontal reference plane. The apparatus includes a face bow, an adjustable nasion relator assembly, a level gauge and a bite fork. The nasion relator assembly, along with the level gauge, enables the face bow to be moved to a level orientation.

Abstract: A bicycle, motorcycle or the like is fabricated from a pair of frame sections. A front frame section includes the front fork and wheel, handlebar and steering assemblies and seat. A rear frame section includes the crank assembly, pedal assembly and the rear stays and wheel. A shock absorber resiliently couples the front and rear frames to one another intermediate the crank assembly and seat. The lower terminus of the shock absorber is secured to a center support stay of the rear frame, the upper terminus of the shock absorber being coupled to one plurality of selectable locations on a diagonal support of the front frame. The point of coupling alters the relative stiffness of the suspension to compensate for the load imposed on the bicycle seat. The front and rear frames are coupled to one another by a flexing member which will permit the rear frame to pivot relative to the front frame in a manner which will optimize of the force required to activate the suspension.

Abstract: A bicycle, motorcycle or the like is fabricated from a pair of frame sections. A front frame section includes the front fork and wheel, handlebar assembly and seat. A rear frame section includes the crank assembly, pedal assembly and the rear stays and wheel. A shock absorber resiliently couples the front and rear frames to one another intermediate the crank assembly and seat. The lower terminus of the shock absorber is secured to a center support stay of the rear frame, the upper terminus of the shock absorber being coupled to one plurality of selectable locations on a diagonal support of the front frame. The point of coupling alters the relative stiffness of the suspension to compensate for the load imposed on the bicycle seat. The front and rear frames are pivotally coupled to one another forwardly from the lower terminus of the shock absorber in a manner which will optimize of the force required to activate the suspension.

Abstract: An instrument for capillary electrophoresis has a vertically translatable carrier holding one end of the capillary and an electrode connected to a power supply, and a rotary carousel for presenting containers of sample and buffer solutions to a load position where the end of the capillary and the electrode may be inserted by operating the carrier. The other end of the capillary and a second electrode connected to the power supply are immersed in an outlet buffer reservoir. The instrument has a vacuum supply for providing a relative vacuum over the solution in the outlet buffer reservoir, so simple material may be injected into the capillary either by electromigration or by differential pressure. After injection, the first end of the capillary and the electrode may be immersed in buffer to accomplish electrophoresis. By manipulating the carousel and carrier, multiple samples may be electrophoresed in series.

Abstract: A bicycle, motorcycle or the like is fabricated from a pair of frame sections. A front frame section includes the front fork and wheel, handlebar assembly and seat. A rear frame section includes the crank assembly, pedal assembly and the rear stays and wheel. A shock absorber resiliently couples the front and rear frames to one another intermediate the crank assembly and seat. The lower terminus of the shock absorber is secured to a center support stay of the rear frame, the upper terminus of the shock absorber being coupled to one plurality of selectable locations on a diagonal support of the front frame. The point of coupling alters the relative stiffness of the suspension to compensate for the load imposed on the bicycle seat. The front and rear frames are pivotally coupled to one another forwardly from the lower terminus of the shock absorber in a manner which will permit adjustment of the force required to activate the suspension.

Abstract: A device for detecting a specific liquid level, that can be mounted externally on a transparent or translucent vessel wall, and is insensitive to ambient light. This device utilizes a single light detector and a pair of AC activated light sources. The light sources produce reflected light signals which, when balanced at the detector, cancel. When liquid is absent the light signals are balanced, and no signal is detected. When liquid is present the extra signal reflected by the meniscus causes the light signals to become unbalanced, and a signal is detected.

Abstract: A device for detecting the marker dye band which is used to monitor the progression of biological macromolecules in gel electrophoresis. This device mounts external to the gel box, and utilizes a single light detector and a pair of AC activated light sources. The light sources produce reflected or transmitted light signals which, when balanced at the detector, cancel. When marker dye is absent the light signals are balanced, and no signal is detected. When marker dye is present at a specific detection point within the gel, the light reflected (or transmitted) is no longer balanced and a signal is detected.

Abstract: A radar system for continuously displaying target returns on a conventional television receiver. The radar includes a console connected to a rotating scanner unit through conventional slip rings. The scanner unit contains a radar antenna coupled to a receiver and transmitter, and a power supply generating a multitude of high-voltage and circuit supply voltages from AC power. A position transducer measures the rotary position of the scanner unit and triggers the transmitter as the scanner unit rotates. The return signal is thresholded to generate a video data signal, portions of which are sequentially stored in separate memory locations, each corresponding to a respective range. The set of video data in memory thus corresponds to targets within a predetermined range in a single direction.

Abstract: A precision liquid pipetting device having an elongated barrel, a pipette tube mounted to one end of the barrel and a plunger assembly carried in part within the barrel and including a plunger tip reciprocable within the pipette tube to draw liquid into and to dispense liquid from the pipette tube, the improvement comprising a finger button removably secured to the plunger assembly on one end and an adjustable stop mounted on said finger button for limiting movement of said plunger assembly and providing precise control of the amount of fluid dispensed from the pipette tube. In addition, a body extension assembly is provided to adapt the pipetting device for connection to a valve body.

Abstract: A dilution system which employs hand manipulated microdispensers including a power actuator for discharging diluent from one or more microdispensers through a flexible conduit to a remote handle carrying a sample microdispenser and a control for the actuator arranged for single-handed dispensing of a sample and diluent.

Abstract: An adjustable volume pipetting device comprising a barrel assembly and a plunger assembly, including a plunger wire, and so constructed that the length of the plunger wire stroke is adjustable while retaining a fixed relationship between the end of the plunger wire and the end of a capillary tube. The novel construction comprises a barrel assembly including an elongated barrel, a sleeve threadably engaged with said barrel and axially adjustable thereon by relative rotation between said barrel and sleeve, a tubular stop coaxially mounted within said sleeve adjacent one end thereof, a capillary tube coaxially mounted in the one end of said sleeve and projecting outwardly from said sleeve and barrel, a slip ring slidably mounted on said barrel adjacent the other end of said sleeve, and a lock nut threadably engaged with said barrel and axially adjustable thereon by relative rotation between said barrel and nut.

Abstract: This invention relates to the disposal of aluminum hydrocarbyl, aluminum hydrocarbyloxy, aluminum halide or aluminum hydride waste materials. Such materials are used as catalysts and may be present alone as well as in combination with similar compounds of other elements typically of Group IV-B, V-B, VI-B, VII-B or VIII. The present disposal process seeks to minimize environmental pollution and provide a product that is suitably used as land-fill. In the process of the invention, a system containing an aluminum hydrocarbon, hydrocarbonoxy, halide or hydride waste stream either with or without a co-present compound of another element as set forth is reacted with a hydroxide or carbonate of a Group I-A, II-A, IV-A, or V-A element under substantially anhydrous conditions. The reaction is comparatively mild and is suitably conducted in ordinary steel equipment without excessive corrosion problems. Diluents co-present with the waste materials are recovered for recycle in anhydrous form without requiring drying.

Abstract: Foamed metal articles having reinforcing fibers, such as inorganic fibers; for example, fiberglass, refractory fibers, and metal fibers, dispersed in the foamed metal for strength improvement. Processes of manufacturing such fiber reinforced foamed metal articles are also disclosed.