Conversion of furan to 1,4-butanediol and tetrahydrofuran
I claim: 1. The process of making 1,4-butanediol by contacting furan, water and hydrogen at a temperature in the range of 150.degree.-190.degree. C. under a hydrogen pressure of 500-900 pounds per squ... Read More
Inventors: Prichard, William W.;, Assignee: E. I. Du Pont de Nemours and Company (Wilmington, DE) |
Audio-band electromechanical vibration converter
What is claimed is: 1. Device for delivering an audio signal to a coil of a vibration converter and for generating a mechanical vibration in a casing of the converter through magnetic interaction betw... Read More
Inventors: Yamada, Kyota; Komatsu, Akira;, Assignee: Bodysonic Kabushiki Kaisha (Tokyo, JP) |
Method and apparatus for vacuum evacuation and pressure fillings of sealed pin joints
It is to a solution of these and other problems that this invention is directed. While this discussion is directed to filling of track pins found on track-type earthmoving machines, it is to be unders... Read More
Inventors: Reinsma, Harold L.;, Assignee: Caterpillar Tractor Company (Peoria, IL) |
Method and device for generating sound in a hall
I claim: 1. Method of generating sound in a space for people, characterized in that a sound-ceiling (4) is mounted in a space (2) and is given such a placing that it is positioned above the heads of t... Read More
Inventors: Naslund, Jan;, Assignee: |
AM Stereo receiver
This present inventor has found that a relatively hard AGC characteristic is desirable for purposes of stereo channel separation, while a relatively soft AGC characteristic is desirable for purposes o... Read More
Inventors: Malchow, Max E.;, Assignee: RCA Corporation (New York, NY) |
X-ray examination apparatus
Accordingly, it is an object of the present invention to widen the range of applicability of the cassette drawers and, namely, to seek ways which facilitates an improved film utilization in cassette d... Read More
Inventors: Holzermer, Gunter; Schmitt, Gunter;, Assignee: Siemens Aktiengesellschaft (Erlangen, DT) |
Preamplifier
Accordingly, one of the objects of the present invention is to reduce the noise components in the upper and lower sidebands of the output signal from a limiter circuit so that the noise in the demodul... Read More
Inventors: Hasegawa, Kenichi; Taniguchi, Hiroshi; Kitamura, Sadafumi;, Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Process for eliminating small-scale intensity fluctuations of laser beams
An object of the invention is to overcome the aforementioned drawbacks and to provide a system for eliminating the small-scale intensity fluctuations of the beams. The invention provides a process for... Read More
Inventors: Bret, Georges;, Assignee: Quantel S.A. (Vigneux, FR) |
Personal audio device
What is claimed is: 1. A personal audio device comprising a holster type flexible supporting structure arranged to be mounted on both shoulders of a listener, an audio apparatus provided to the suppor... Read More
Inventors: Sato, Masaaki;, Assignee: Olympus Optical Co., Ltd. (Tokyo, JP) |
Earphone assembly
What is claimed is: 1. An earphone assembly for use in combination with a relatively narrow flexible head gear for retaining an earphone unit adjacent an ear on the head of a user comprising a bracket... Read More
Inventors: French, Alan;, Assignee: |
Electret transducer with tapered acoustic chamber
What is claimed is: 1. A electret transducer comprising a backplate coated on one face with a dielectric material, a diaphragm spaced apart from and positioned parallel to said backplate and facing sa... Read More
Inventors: Murphy, Preston V.; Hubschi, Kurt;, Assignee: Lectret S.A. (Geneva, CH) |
Electret transducer
What is claimed is: 1. An electret transducer comprising: a diaphragm, first and second electrodes disposed one on each side of the diaphragm with at least one electrode being spaced from the diaphrag... Read More
Inventors: Kuindersma, Pieter I.;, Assignee: U.S. Philips Corporation (New York, NY) |
Electret microphone
The foregoing problems are solved in accordance with an embodiment of the invention wherein an electret transducer comprises a uniformly radially tensioned electret diaphragm having a thin metal layer... Read More
Inventors: Paulus, Jr., Frank S.; Tuah-Poku, Isaac;, Assignee: AT&T Technologies, Inc. (Berkeley Heights, NJ) |
Audio transducer apparatus
What i claimed is: 1. Transducer apparatus for transmitting electromagnetic signals to a wall, comprising, in combination: housing means for holding electromagnetic elements, including a base housing ... Read More
Inventors: Andrews, Jay E.;, Assignee: |
Articulated earmuff-to-headband attachment construction
The embodiments of the invention in which an exclusive property or privilege is claimed are defined in the following claims: 1. An articulated earmuff-to-headband construction for acoustic earmuff dev... Read More
Inventors: Gardner, Jr., Ross; Falco, Robert;, Assignee: Cabot Corporation (Boston, MA) |
Convertible mask, ascot and visor garment and method of conversion therebetween
It is an overall object of the present invention to provide an improved garment which is useful as a cold weather face and neck mask. A further object is to provide such a garment which is selectively... Read More
Inventors: Hetz, Mary N.; Brothers, Bruce J.;, Assignee: Hot Cheeks, Inc. (Bend, OR) |
Solar generator mounting structure
OF THE DRAWINGS My invention, with reference to FIG. 1, provides a segment 10 of a dome shaped structure rotatably mounted on an underlying dome structure 5. The segment is the near half of the total... Read More
Inventors: Headrick, Richard T.;, Assignee: |
FM receiver with improved adjacent-channel rejection
What is claimed: 1. An FM receiver comprising a channel selection and intermediate frequency circuit having a signal output, a phase-locked loop frequency demodulator connected to said signal output a... Read More
Inventors: Horvat, Philippe;, Assignee: U.S. Philips Corporation (New York, NY) |
Vacuum power interrupting device
OF THE PREFERRED EMBODIMENT Referring to FIG. 1, there is illustrated one form of a vacuum power interrupting device according to the present invention. The vacuum power interrupting device briefly c... Read More
Inventors: Sakuma, Shinzo; Yanagisawa, Hifumi; Tokuhata, Kazuo; Miyagawa, Hiroshi;, Assignee: Kabushiki Kaisha Meidensha (Tokyo, JP); Kabushiki Kaisha GEMV AC (Tokyo, JP) |
Method and apparatus for implementing carrierless amplitude/phase encoding in a network
The present invention is a method and apparatus for transmitting data between a least a first and second station over a network interface, such as the well-known ethernet network. The present inventio... Read More
Inventors: Rakib, Selim;, Assignee: |
Fingerprint input device equipped with a cleaner for finger-impressing surface
Accordingly, an object of the present invention is to provide a fingerprint input device capable of cleaning a finger-impressed surface. Another object of the present invention is to provide a fingerp... Read More
Inventors: Asai, Ko; Morita, Koichiro;, Assignee: NEC Corporation (Tokyo, JP) |
Method and apparatus for enabling a step-up or step-down operation using a synchronous rectifier circuit
The present invention provides an on-chip synchronous rectifier for enabling a step-up or step-down operation of a DC--DC converter. The synchronous rectifier consists of a series pass element. More s... Read More
Inventors: Kolluri, Madhav V.; Schaffer, Gregory L.;, Assignee: Maxim Integrated Products (Sunnyvale, CA) |
Method and system for battery charging
OF A PREFERRED EMBODIMENT FIG. 1 illustrates a preferred method of charging a battery in accordance with the present invention. The method starts at step 10 and begins applying a predetermined voltag... Read More
Inventors: Kim, Sang Hoon; Schultz, Andrew V.;, Assignee: Motorola Inc. (Schaumburg, IL) |
CMOS Voltage multiplier
The present invention is a voltage multiplier comprising storage capacitors interconnected through switching elements to effect parallel charging of the capacitors during a first half of a cycle and s... Read More
Inventors: Patterson, III, Raymond B.;, Assignee: Harris Corporation (Melbourne, FL) |
DC Voltage multiplier using phase-sequenced CMOS switches
In accordance with the invention, an electronic circuit is provided for receiving a DC input supply voltage and for delivering a DC output voltage to a utilization device which is a multiple of the in... Read More
Inventors: Bader, Clifford J.;, Assignee: Burroughs Corporation (Detroit, MI) |
Low power voltage multiplier circuit
What is claimed is: 1. The combination comprising: a capacitor having first and second terminals; an inverter having first and second power terminals for the application thereto of first and second op... Read More
Inventors: Harmon, Joseph W.; Atherton, James H.;, Assignee: RCA Corporation (New York, NY) |
Circuit for voltage multiplication
The object of the present invention is to provide a circuit of the type generally set forth above wherein the aforementioned disadvantage does not occur. According to the invention, the above object i... Read More
Inventors: Mauthe, Manfred;, Assignee: Siemens Aktiengesellschaft (Berlin & Munich, DE) |
Device comprising an electronic circuit for processing an analog signal
An object of the present invention is to provide a device comprising an electronic circuit for processing an analog electric signal and a voltage multiplying circuit intended to be connected to an ele... Read More
Inventors: Sahm, Hans W.;, Assignee: EM Microelectronic Marin SA (Marin, CH) |
Polyphase full-wave rectifying circuit
An object of this invention is to provide a polyphase full-wave rectifying circuit which can absorb both internal and external surges by means of as few Zener diodes as two. Another object of this inv... Read More
Inventors: Nakayama, Hirofumi;, Assignee: Kabushiki Kaisha Toshiba (Kawasaki, JP) |
BICMOS logic having three state output
Accordingly, it is an object of the present invention to provide an improved three state gate. Another object of the present invention is to provide a BICMOS three state gate having high noise immunit... Read More
Inventors: Gallup, Michael G.; McLaughlin, Kevin L.;, Assignee: Motorola, Inc. (Schaumburg, IL) |
Audio Signal Processing 
