(NASA-Case-LAR-11326-1; US-Patent-3,907,646; US-Patent-Appl-SN-491416; US-Patent-Class-195-103.5R) Avail: US Patent Office CSCL 148 A simple apparatus and method is disclosed for measuring gas production by microorganisms using a pressure transducer to sense pressure buildup by members of the Enterobacteriaceae group of bacteria. The test system consists of a 5.0 psid pressure transducer and a pressure equalizer valve attached to the metal cap of a 20 x 150 mm test tube. Gas pressure is recorded on a strip-chart recorder. Official Gazette of the US Patent Office <1.0 N76-14430* + 3D 24 23 22 21 National Aeronautics and Space Administration. N75-33369* National Aeronautics and Space Administration. (NASA-Case-LAR-11263-1; US-Patent-3,906,788: US-Patent-Appl-SN-472775; US-Patent-Class-73-141A) Avail: US Patent Office CSCL 14B A strain transducer is described for use in the measurement of static or quasi-static high strain levels at stress concentration points in holes in flat plates. Cantilever springs constructed by machining the material to appropriate flexibility, permit selfalinement, and constant contact with the test specimen Used in conjunction with a strain gage or other transducer, it enables testing far beyond the strain gage's normal limits for high strains and number of load cycles. Official Gazette of the U.S. Patent Office 20 N76-14431* 22 38 30 National Aeronautics and Space Administration. Lewis Research Center, Cleveland, Ohio. Miles O. Dustin inventor (to NASA) 7 Oct. 1975 7 p Filed 30 May 1974 (NASA-Case-LEW-11915-1; US-Patent-3,911,260; US-Patent-Appl-SN-474744; US-Patent-Class-235-151.34; US-Patent-Class-60-39.29; US-Patent-Class-137-15.2) CSCL total throat pressure so that the signal from the static pressure tabs is compared to a varying scan signal rather than to total throat pressure only. This type of comparison causes each comparator to provide a pulse width modulated output which may vary from 0% time on' to 100% 'time on'. The pulse width modulated outputs of the comparators are summed, filtered, and directed to a controller which operates a bypass valve such as a door whereby air is dumped from the inlet to prevent the shock wave from being expelled out the front. Official Gazette of the U.S. Patent Office N76-14434*# National Aeronautics and Space Administration. Pasadena Office, Calif. FORWARD-SCATTER POLARIMETER FOR DETERMINING THE GASEOUS DEPOLARIZATION FACTOR IN THE PRESENCE OF POLLUTING POLYDISPERSED PARTICLES Patent Application Alain L. Fymat, inventor (to NASA) (JPL) Filed 18 Dec. 1975 18 P (Contract NAS7-100) (NASA-Case-NPO-13756-1; JPL-Case-13756; US-Patent-Appl-SN-641801) Avail: NTIS HC $3.50 CSCL 14B A method and an apparatus are described for determining. under conditions of near-forward scattering, the depolarization factor of gases in an arbitrary mixture with polydispersions of unknown polluting particles of any size distribution and concentration. NASA An interferometer is described which has servo means for automatically adjusting the angular tilt of a reflecting surface in one of two paths to maintain the exit beams from the two paths parallel to each other. Three detectors at the output of the interferometer are disposed on mutually perpendicular axes which define a plane normal to the nominal exit beam axis. One detector at the origin of the axes is used as a reference for separate phase-difference comparison with the outputs of the other two detectors on the X and Y axes to develop servo error signals. NASA LINE AN SCAN SIGNAL AC MOD SIGNAL The patent of an invention dealing with a cosmic dust analyzer was presented. Methods and apparatus are provided which employ ion time-of-flight techniques to determine the composition of a high velocity particle such as a micrometeorite. A charged target electrode formed of two known materials is arranged to intercept the particle, the impact of which creates a discrete plasma of ions of both the known target material as well as the particle matter. A charged collector electrode receives the ions from the target, which tend to travel at a velocity which is approximately a function of their mass only. The fractional ionization for an arbitrary atomic species can be specified by the Saha equation. Given the temperature, the procedure can be reversed to yield the relative abundance of elements in the impacting particle. N76-15432* National Aeronautics and Space Administration. Langley Research Center, Langley Station, Va. ULTRASONIC CALIBRATION DEVICE Patent Joseph S. Heyman and James G. Miller, inventors (to NASA) Issued 9 Dec. 1975 4 p Filed 11 Nov. 1974 (NASA-Case-LAR-11435-1; US-Patent-3,924,444; US-Patent-Appl-SN-522556; US-Patent-Class-73-1R; US-Patent-Class-310-8.2) Avail: US Patent Office CSCL 14B An ultrasonic calibration device for producing known changes in both acoustic absorption and phase velocity is described. The calibration signal arises from an actual change of acoustic parameters, not from an electrical simulation. Thus, changes in ultrasonic time-domain decay rates and frequency-domain line widths are produced. The device is able to simulate not only changes in ultrasonic absorption and phase velocity but also the sensitivity enhancement achieved by the use of ultrasonic resonators. Official Gazette of the U.S. Patent Office 27 27 Division of US Patent Appl. SN-104885, filed 8 Jan. 1971, US-Patent-3,729,343 (NASA-Case-LEW-11072-2; US-Patent-3,925,104; US-Patent-Appl-SN-254323; US-Patent-Class-136-225; US-Patent-Class-136.211; US-Patent-Class-136-212; A thermocouple which may be rolled as a tape until needed and a method of making same are described. Thermoelectrically different metals are applied to a strip of electrically nonconductive material in longitudinally overlapping relationship. Apertures may be provided along the tape in the overlapping region at predetermined intervals. An adhesive material is applied to the side of the tape opposite the thermoelectric metals either before or after the thermoelectric metals are deposited. The tapes may be cut or torn to form a thermocouple device which is ready for application to a body whose temperature is to be monitored or measured. Official Gazette of the U.S. Patent Office (NASA-Case-GSC-11892-1; US-Patent-3,927,324; Movement of a charged particle through a region is detected by providing a detector including first, second and third spaced metal grids previous to the particle and positioned so that the particle passes through them in sequence. The first and third grids are short-circuited to each other and to ground. A signal input terminal of a d.c. amplifier is connected in d.c. circuit with the second grid so that a voltage pulse induced in the second grid by the particle passing through the three grids results in an output pulse of the amplifier. A plurality of such detectors are arranged for enabling the position and velocity vectors of the charged particle to be detected in three mutually orthogonal axes, X, Y and Z. Official Gazette of the U.S. Patent Office N76-15435* National Aeronautics and Space Administration. Pasadena Office, Calif. DICHROIC PLATE Patent Philip D. Potter, inventor (to NASA) (JPL) Issued 2 Dec. 1975 5 p Filed 27 Jun. 1974 Sponsored by NASA (NASA-Case-NPO-13506-1; US-Patent-3,924,239; US-Patent-Appl-SN-483851; US-Patent-Class-343-909) Avail: US Patent Office CSCL 148 A dichroic plate is disclosed for passing radiation within a particular frequency band and reflecting radiation outside of that frequency band. The value of the thickness of the plate is selected so that the plate acts as a resonant narrow band pass filter for the desired pass frequency, and the shapes of the apertures in the dichroic plate are selected to compensate for the phase shift caused by the air-plate interface presented to the signals passing therethrough. Official Gazette of the U.S. Patent Office 14 16 18 20 N76-15436* National Aeronautics and Space Administration. Goddard Space Flight Center, Greenbelt, Md. ATOMIC STANDARD WITH VARIABLE STORAGE VOLUME Patent Harry E. Peters, inventor (to NASA) Issued 2 Dec. 1975 5 p Filed 3 Oct. 1974 (NASA-Case-GSC-11895-1; US-Patent-3,924,200; US-Patent-Appl-SN-511887; US-Patent-Class-331-94; US-Patent-Class-331-3) Avail: US Patent Office CSCL 14B A cylindrical, convoluted, flexible bellows is used to form an atomic or molecular storage vessel with constant surface area and surface properties but adjustable volume. When utilized as a storage buib inside an atomic or molecular frequency standard such as a hydrogen maser, it provides an apparatus for obtaining an extremely accurate measurement of the frequency deviation caused by the interaction of gas atoms (or molecules) with the vessel wall surface. Official Gazette of the U.S. Patent Office N76-16391* National Aeronautics and Space Administration. Pasadena Office, Calif. SCAN CONVERTING VIDEO TAPE RECORDER Patent Norman I. Holt, inventor (to NASA) (JPL) Issued 2 Dec. 1975 9 p Filed 27 Oct. 1971 Continuation-in-part of abandoned US Patent Appl. SN-668116, filed 15 Sep. 1967 Sponsored by NASA (NASA-Case-NPO-10166-2: US-Patent-3,924,267; A video tape recorder with broad bandwidth capabilities for recording color television signals, and which has the capability of playing back the recorded television signals at a scan rate different from that at which the signals were recorded is introduced. The recorder also allows television signals of one scanning standard to be converted to television signals of a second scanning standard. Official Gazette of the U.S. Patent Office (NASA-Case-NPO-13388-1; US-Patent-3,924,176; US-Patent-Appl-SN-522552; US-Patent-Class-324-43R) US Patent Office CSCL 14B Avail: A method and apparatus for measuring the strength and direction of an unknown magnetic field are disclosed. A freely rotatable suspended superconducting body, such as a sphere, is maintained at a superconducting temperature. A magnetic field to be measured induces super current flow on the sphere's surface. The induced current causes the sphere to rotate at a rate that is proportional to the strength of the field, and the axis of rotation of the sphere aligns with the direction of the magnetic field to be measured. An operator applies current to orthogonal electromagnetic coils arranged relative to the sphere so as to apply variable magnetic fields to the sphere. Varying the current and the resulting fields nulls out the effect of the magnetic field N76-16392* 50 National Aeronautics and Space Administration. Langley Research Center, Langley Station, Va. CLOCK SETTER Patent Claude T. Haley, inventor (to NASA) 4 p Filed 9 Sep. 1974 Issued 30 Dec. 1975 (NASA-Case-LAR-11458-1; US-Patent-3,929,364; US-Patent-Appl-SN-504225; US-Patent-Class-294-19R; US-Patent-Class-294-1R) Avail: US Patent Office CSCL 14B An apparatus is described for manually adjusting large wall-mounted clocks while the operator remains safely on the floor, comprising a long handled tool which slips over the reset knob of such clocks allowing a downward and twisting motion to adjust the indicated time. The Official Gazette of the U.S. Patent Office 10 N76-17369*# National Aeronautics and Space Administration. Goddard Space Flight Center, Greenbelt, Md. A 2 DEGREE/90 DEGREE LABORATORY SCATTERING PHOTOMETER Patent Application W. R. McCluney, inventor (to NASA) Filed 13 Jan. 1976 16 p (NASA-Case-GSC-12088-1; US-Patent-Appl-SN-648700) Avail: NTIS HC $3.50 CSCL 14B A scattering photometer was developed for measuring the light scattered by particles in a hydrosol at substantially 2 deg and 90 deg simultaneously. Light from a source is directed by a first optical system into a scattering cell containing the hydrosol under study. Light scattered at substantially 90 deg to the incident beam is focused onto a first photoelectric detector to generate an electrical signal indicative of the amount of scattered light at substantially 90 deg. Light scattered at substantially 2 deg to the incident beam is directed through an annular aperture symmetrically located about the axis of the illuminating beam which is linearly transmitted undeviated through the hydrosol and focused onto a second photoelectric detector to generate an electrical signal indicative of the amount of light scattered at substantially 2 deg. NASA US-Patent-Appl-SN-502124; US-Patent-Class-250-281; A mass spectrometry apparatus for analyzing the composition of moving microscopic particles is introduced. The apparatus includes a capacitor with a front electrode upon which the particles impinge, a back electrode, and a solid dielectric sandwiched between the front and back electrodes. In one embodiment, the electrodes and dielectric are arcuately shaped as concentric peripheral segments of different spheres having a common center and different radii. The front electrode and dielectric together have a thickness such that an impinging particle can penetrate them. In a second embodiment, the capacitor has planar, parallel electrodes, in which case the ejected positive ions are deflected downstream of a planar grid by a pair of spaced, arcuate capacitor plates having a region between them through which the ejected ions travel. Official Gazette of the US. Patent Office N76-18400* National Aeronautics and Space Administration. Orval W. Wade, inventor (to NASA) (Martin Marietta Aerospace. NASA (NASA-Case-LAR-10208-1; US-Patent-3,938,373; US-Patent-Appl-SN-483858; US-Patent-Class-73-95; US-Patent-Class-73-103) Avail: US Patent Office CSCL 148 A method for obtaining accurate and reproducible results in the tensile testing of metal foils in tensile testing machines is described. Before the test specimen are placed in the machine. foil side edges are worked until they are parallel and flaw free. The specimen are also aligned between and secured to grip end members. An aligning apparatus employed in the method is comprised of an alignment box with a longitudinal bottom wall and two upright side walls, first and second removable grip end members at each end of the box, and a means for securing the grip end members within the box. Official Gazette of the U.S. Patent Office |