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A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
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| Number | Title | Issue Date |
| 4848208 | Automated method and system for engaging multiple pursuers with multiple targets A plurality of pursuers or defensive missiles which are self-guided and self-propelled individually assign themselves to one of a plurality of targets or incoming offensive missiles in such a manner that the probability is substantially increased that mor... | 07/18/1989 |
| 4796187 | Method for processing image data to select a target aimpoint A method for operating a target tracker and processing the image data received from its sensor to select the target from the clutter and to select an aimpoint on the target of particular utility. The method processes the gaps between image segments on a g... | 01/03/1989 |
| 4794343 | Method and apparatus for calibrating and equalizing a multi-channel automatic gain control amplifier A plurality of amplifier channels, wherein each channel is automatically gain controlled by a gain control signal and wherein the gain of each channel is a known function of a plurality of constants of corresponding to each amplifier and of the gain contr... | 12/27/1988 |
| 4792214 | Optical magnifying system: 10 x loupe A six element optical magnifying system (10) is disclosed. The primary lens (12), secondary lens (14), tertiary lens (16), quaternary lens (18), quinary lens (20), and sextiary lens (22) form an optical system (10), having surfaces shaped to focus upon an... | 12/20/1988 |
| 4656651 | System for providing remote services A system for providing remote services and maintenance functions includes a voice subsystem adapted to receive voice and DTMF signals that can be used to control the execution of a plurality of service and maintenance tests. The system also includes a pro... | 04/07/1987 |
| 4476733 | Sampler for feeding samples in gas chromatography A plurality of samples subject to the same thermostatting time periods are directed one by one to the inlet section of a gas chromatograph for analysis in accordance with the head space method. To this end, a first heatable sample store adapted to be step... | 10/16/1984 |
| 4468601 | Stepper motor control An improvement in the operation of a system where the driving means is a stepper motor comprises provision of a special software routine implemented by a microprocessor controlling the delivery of a counted series of pulses to drive the stepper motor. The... | 08/28/1984 |
| 4464940 | Sampler for a gas chromatograph According to the head space method, samples are supplied from sealed sample vessels by means of a needle. A change-over valve, an optionally higher or reduced carrier gas pressure is applied to a carrier gas conduit comprising a shut-off valve and termina... | 08/14/1984 |
| 4464051 | Spectrophotometer Disclosed herein is a spectrophotometer which includes a source of radiation; an optical system for forming a beam of radiation from the source and directing it along a sample path and along a reference path, which paths come together at a location to for... | 08/07/1984 |
| 4461185 | Injection needle A needle, for use in withdrawing a liquid sample from sample vessels closed by self-sealing diaphragms, includes a capillary tube 12 turned inwardly at its end. The end thereof is tapered conically at the inside as well as at the outside.... | 07/24/1984 |
| 4457623 | Atomic absorption spectrophotometer providing background correction using the Zeeman effect An atomic absorption spectrophotometer having a source, e.g., a hollow cathode lamp, of spectral radiation of a selected narrow band of wavelengths optically directed along an axis through an electrothermic sample atomizer and a field stop to a photoelect... | 07/03/1984 |
| 4453954 | Assembly for connecting the column ends of two capillary columns In gas chromatography, the column ends of two capillary columns are inserted into a straight capillary from both sides forming annular gaps. The capillary is located in a tee out of which the capillary columns are sealingly guided, and to which carrier ga... | 06/12/1984 |
| 4453898 | Dual-piston reciprocating pump assembly The invention is directed to a dual-piston reciprocating pump assembly which includes two opposed substantially identical reciprocating pumps, a housing within which the pumps are mounted, a cam mounted on a cam shaft which is driven through a coupling by... | 06/12/1984 |
| 4453826 | Double monochromator A pre-monochromator having a grating monochromator includes an unsymmetrically ruled concave diffraction grating, by means of which a light source is directly imaged upon an exit slit. The diffraction grating is unsymmetrical with respect to the distribut... | 06/12/1984 |
| 4453225 | Counteracting the effect of phase shift changes between two quantities in extracting their ratio The accuracy of the ratio between two time-varying quantities represented by electrical signals, such as the sample transmission (or absorption) signal and the reference signal in a double-beam, ratio-recording, infrared spectrophotometer, is impaired if ... | 06/05/1984 |
| 4448684 | Solvent pressurization system A solvent pressurization system includes a depressurization means which operates to change the operating mode for pressurized solvent delivery to a sparging mode when the access door of the solvent compartment is opened. Consequently, an operator is prote... | 05/15/1984 |
| 4448530 | Spectrophotometer A spectrophotometer producing a derivative spectrum of a looked-for component of a sample includes means for producing an output signal which is directly representative of the concentration of the looked-for element.... | 05/15/1984 |
| 4443105 | Device useful for flameless atomic absorption spectroscopy An apparatus useful for flameless atomic absorption spectroscopy includes a sample carrier adapted for receiving non-gaseous sample material and means for radiantly heating the sample carrier to effect the uniform thermal decomposition thereof.... | 04/17/1984 |
| 4443104 | Fluorimeter sampling apparatus A fluorimeter sampling apparatus useful in a fluorimeter includes a linearly movable sample carrier having a plurality of cuvette holders associated therewith. Each cuvette holder, when positioned in a measuring position, is aligned with an excitation rad... | 04/17/1984 |
| 4438329 | Minimizing the effect of spurious photodetector currents in flash spectrofluorimetry The vitiating effect on the fluorescence measuring signal of extraneous currents flowing through the fluorescence detection means in flash spectrofluorimetry is almost completely eliminated by integrating the output of the fluorescence measuring means for... | 03/20/1984 |
| 4430657 | Pen drive for recorder A direct current servo motor operates through a toothed belt linkage to drive the pen carriage of a chart recorder. The position of the drive is monitored by a sectored encoder disc on the motor shaft. A pair of optical sensors is located relative to the ... | 02/07/1984 |
| 4429736 | Concentration in time of a gas component entrained in a carrier gas The combination of an electrically conductive hollow body, a step-down transformer operable at a frequency greatly in excess of 1 kHz and solid phase temperature depressing means is used to realize the invention in its method and apparatus aspects. The te... | 02/07/1984 |
| 4426569 | Temperature sensor assembly An effusion cell assembly is disclosed and includes a temperature sensor designed to balance sensor temperature and cell crucible temperature by an increased heat radiation collection.... | 01/17/1984 |
| 4426651 | Strip chart recorder An improvement to a chart recorder where the chart paper is driven by a motor responsive to pulses counted by a microprocessor makes it possible for the operator to return the pen at any time to the starting point of the last chart scan by merely pressing... | 01/17/1984 |
| 4425571 | Chart recorder An improvement to a chart recorder where the chart paper is driven by a motor responsive to pulses counted by a microprocessor makes it possible for the operator to set the pen to a major grid line on the chart at any time after initialization by merely p... | 01/10/1984 |
| 4419575 | Apparatus useful for positioning a light filter An apparatus useful for positioning a light filter includes an incrementally stepped motor having the light filter affixed thereto. The apparatus also includes means for detecting a light signal and incrementing the motor in response thereto.... | 12/06/1983 |
| 4417180 | Lamp firing apparatus A discharge lamp firing apparatus is disclosed which includes providing only the necessary firing voltage to the lamp prior to the firing thereof. As such, the surrounding system is not subjected to transients caused by conventional mechanisms which sudde... | 11/22/1983 |
| 4416736 | Procedure for the enrichment of the element of interest from a solution for nonflame atomic absorption spectroscopy An apparatus for enriching a sought element from a solution for flameless atomic absorption spectroscopy includes a constant voltage current source. The solution is enriched by electrodepositing the sought element therefrom and integrating the current wit... | 11/22/1983 |
| 4416354 | Rotary feedthru control A mechanism for providing for the one-handed control of a rotary feedthru includes bi-directional braking means which is controllable by the same element used for imparting rotation to the feedthru.... | 11/22/1983 |
| 4415264 | Spectrophotometer gas control system This invention relates to a spectrophotometer which includes a burner adapted for burning a gaseous fuel and for atomizing a sample to be analyzed in a burner compartment, mechanical elements or electrical circuitry serving to periodically pass a beam of ... | 11/15/1983 |
| 4413534 | Sample transport mechanism A mechanism for automatically supplying sample fluids to a chromatographic column is provided. The mechanism obviates the need for sealed sample containers as well as the need for pressurized gas commonly employed to force sample fluid from the sealed con... | 11/08/1983 |
| 4412771 | Sample transport system A sample transport system adaptable for use in an MBE instrument includes means for introducing a plurality of substrates into a storage chamber and means for conveying each substrate on a preselected basis to a processing chamber whereby the wafers not b... | 11/01/1983 |
| 4411575 | Sample transfer vessel A sample transport vessel including a sample block carrier is capable of forming a hermetic seal with a sleeve portion of a lid member. When assembled, the vessel can be used to transport chemically active materials without contamination thereof. In addit... | 10/25/1983 |
| 4406541 | Assembly useful with an atomic spectrometer A chamber useful with an atomic absorption spectrometer includes at least two atomization means installed therein. The means can be serially aligned with the measuring beam or arranged parallel to the axis thereof.... | 09/27/1983 |
| 4406540 | Apparatus for use in flameless atomic absorption spectroscopy An apparatus useful in the flameless atomic absorption spectroscopy analysis of a sample includes an electrically conductive sample carrier adapted to be heated whereby drying and ashing steps can be performed by passing an electric current therethrough. ... | 09/27/1983 |
| 4404288 | Method and apparatus for concentrating a vapor of a mercury sample solution A method for concentrating a vapor of a mercury sample solution is carried out by an apparatus having an electrode of amalgam-forming material which electrode is movable from the sample solution to a heated portion within a tube.... | 09/13/1983 |
| 4400354 | Apparatus useful for analyzing refractory substances An apparatus and method useful for analyzing refractory substances includes a means for locally heating a sample portion of a refractory material to generate the dissociated vapor thereof.... | 08/23/1983 |
| 4395091 | Optical coupling device for use with a plasma emission spectrometer An optical coupling device for providing an oxygen-free optical path between a plasma torch and a monochromator includes a hollow body having means associated therewith for the venting thereof.... | 07/26/1983 |
| 4393726 | Sampling valve useful in liquid chromatography A sampling valve useful in liquid chromatography includes a stationary valve member and a valve member movable with respect thereto. The movable valve member includes an axial bore having a cross-section permitting the insertion therethrough of a sample i... | 07/19/1983 |
| 4391776 | Dissociation chamber and measuring cell combination useful for making measurements A dissociation chamber and measuring cell combination which is useful for making atomic fluorescence measurements includes a heated dissociation chamber and a measuring cell separate therefrom. The combination is particularly useful for use with elements ... | 07/05/1983 |
