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| Patent # | Description |
|---|---|
| US-4,536,637 |
Method for preventing the discoloration of areas around indentation in
spot welding A method for preventing discoloration of the area around an indentation in spot welding is provided in which the weld zone and its surrounding area are masked... |
| US-4,536,636 |
Method and machine for electrical resistance roll seam welding with a
single electrode-wire In a method for electrical resistance roll seam welding with a single electrode-wire, wherein the electrode-wire runs over first and second electrode... |
| US-4,536,635 |
Method and apparatus for cleaning welding electrode wheels with high
pressure water A fluid circulating apparatus for cleaning welding electrode wheels with a spray of fluid. A high pressure pump draws the fluid from a tank and distributes it to... |
| US-4,536,634 |
Hot wire arc welding torch assembly A hot wire welding torch assembly includes a nonconsumable metal electrode 12, a filler metal 6 fed to a weld puddle 11 fomed by an arc 10, a collet body 15 for... |
| US-4,536,633 |
Dielectric fluid for electrical discharge machining A dielectric fluid for electrical discharge machining which contains an ester solution. The dielectric fluid presents no fire hazard during use due to a high... |
| US-4,536,632 |
Wire-cut electroerosion method and apparatus utilizing wire-cleaning
means Wire-cut electroerosion method and apparatus whereby breakage of an electrode wire is substantially prevented by limiting air-bubbling in the cutting zone from... |
| US-4,536,631 |
Induction heating cooking apparatus An induction heating coil and a self-excited inverter are connected to a ripple voltage source. The self-excited inverter comprises a transistor as a switching... |
| US-4,536,630 |
Limiting switch A current limiting switch is provided comprising two mobile levers subjected to the action of springs which apply, one against the other, separable contact... |
| US-4,536,629 |
Gas damped acceleration switch A gas damped acceleration switch for use as a vehicle crash-sensing device. A mass is supported for movement along an axis against a spring, the mass actuating a... |
| US-4,536,628 |
Pushbutton switch assembly with integrated lock-down switch The present invention relates to a pushbutton switch assembly for use with telephone sets, having an integrated lock-down switch. With the aid of a rotatable... |
| US-4,536,627 |
Expanded interval timer drive mechanism An expanded interval drive mechanism for a program timer includes two ratchet rings. One of the ratchet rings is fixed to the monoblock and at certain regions... |
| US-4,536,626 |
Timer drive mechanism A drive mechanism for a timer includes a drive pawl having a pin which is trapped between two camming surfaces of a continuously driven drive cam. The drive pawl... |
| US-4,536,625 |
Keyboard design Electrical switch keyboards comprise a one-piece mat made of resilient material laid in sealing engagement upon a frame within which switching elements are... |
| US-4,536,624 |
Telephone answering machine interface circuit An interface circuit is provided for a telephone answering machine which does not require a transformer and which provides the proper direct current and... |
| US-4,536,623 |
Electro-acoustic transducer with diaphragm and blank therefor The transducer diaphragm includes a folded sheet of thin film material, having a front surface and having a plurality of rearwardly extending projections in the... |
| US-4,536,622 |
Remote telephone on-hook, off-hook control and indication circuit A telephone handset arranged to operate completely independently of a base comprises switches for effecting a connection with a telephone line and a manually... |
| US-4,536,621 |
Dual talk path key telephone In a multiple talk path key telephone of the type of having multiple handsets, each handset is coupled to the key field for a predetermined short period of time... |
| US-4,536,620 |
Master unlock circuit for an electronic telephone A circuit which unlocks the signaling circuit of a feature telephone station after it has been locked. A microprocessor disconnects a tone generator from an... |
| US-4,536,619 |
Ringing signal detection circuit A ringing signal detection circuit for a subscriber's apparatus which is connected to a telephone office line together with an attached telephone set. An... |
| US-4,536,618 |
Telephone line interface A telephone line interface for direct connect telephone line connections characterized by low cost and minimal package size requirements. The telephone line... |
| US-4,536,617 |
Remotely-activated switching apparatus Apparatus is disclosed for disconnecting and reconnecting equipment to a telephone line in response to at least one signal sent over the telephone line. The... |
| US-4,536,616 |
Microphone or mouthpiece signal suppression circuit The invention relates to a circuit for a telephone set. In order to eliminate the mouthpiece signal between the receiver and the telephone set, there are... |
| US-4,536,615 |
Key telephone equipment and associated method Telephone apparatus including a main unit and a plurality of loudspeaker type key telephone sets, in which a pair of office line call wires to be used solely for... |
| US-4,536,614 |
Supervision and dial pulse detection circuit for a telephone subscriber
line A floating battery feed circuit employs a single primary winding, a pulse width control circuit and a peak detector for providing a controlled current to a... |
| US-4,536,613 |
Clamp bushing for securing an electrical cable to an electrical outlet
box A cable clamp assembly comprises a bushing member adapted to receive an electrical power cable, tubing or the like, has a pair of jaw members adapted to fit... |
| US-4,536,612 |
Box for raised floors Box has a hollow main housing and means which separates the housing into two power sections and an electrically isolated communication section between the power... |
| US-4,536,611 |
Unitary telephone cable closure An aerial telephone cable closure for enclosing telephone cables suspended from a support strand. The closure consists of a tubular housing having a pair of... |
| US-4,536,610 |
Oil-filled, multi-core cable with at least one conductor differing from
others An oil-filled, multi-core, electric cable having three cores within a metal sheath. Each core has a conductor surrounded by insulation and has substantially the... |
| US-4,536,609 |
Oil well electrical cable with gas conducting channel and vent An electrical cable especially useful in oil wells having a gas conducting channel beneath the outer sheath and a valved vent through the sheath to prevent... |
| US-4,536,608 |
Solar cell with two-dimensional hexagonal reflecting diffraction grating A solar cell which includes a thin layer of active material bounded on the side toward the incident light with an antireflection coating and bounded on the other... |
| US-4,536,607 |
Photovoltaic tandem cell A photovoltaic tandem cell comprises an amorphous cell and a polycrystalline heterojunction cell. The cells are in optical series and separated by a transparent... |
| US-4,536,606 |
Control of a cracking furnace The heat provided to a cracking furnace is manipulated so as to maintain the actual conversion of a first component in the feed stream flowing to the cracking... |
| US-4,536,605 |
Process for the production of tertiary olefin A tertiary olefin is produced by contacting a gaseous tertiary ether usually represented by the following general formula: ##STR1## wherein R.sup.1, R.sup.2... |
| US-4,536,604 |
Butadiene reductive dimerization using a platinum catalyst and polymeric
amine promoter A method for preparing 1,6-octadiene by reacting 1,3-butadiene with formic acid in the presence of a platinum(II) catalyst and a polymeric tertiary amine... |
| US-4,536,603 |
Production of acetylene from coal by contact with a combustion gas A process wherein coal is reacted with a hot gas stream to produce acetylene. The process comprises the sequential steps of reacting a fuel, oxygen and steam... |
| US-4,536,602 |
Amination of olefins using organic acid catalysts The present invention involves the catalytic amination of olefins with ammonia, a primary amine, or a secondary amine using a perfluorinated organic acid catalyst. |
| US-4,536,601 |
Optically active N-substituted phenylalaninols and use thereof Optically active N-substituted phenylalaninols of the formula (I): ##STR1## wherein R is isopropyl, 1-ethylpropyl, cyclopentyl, cyclohexyl, cycloheptyl,... |
| US-4,536,600 |
Polyoxyalkylenepolyacrylamides and the preparation thereof Novel polyoxyalkylenepolyacrylamide compounds useful as adhesives are disclosed. These novel compounds are prepared by mixing and reacting di- and tri-functional... |
| US-4,536,599 |
Synthesis of amine derivatives An amine of the formula, ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each hydrogen, alkyl or the like and n is 1, 2 or 3, including ... |
| US-4,536,598 |
Color-forming carboxamidonaphthalene dye precursor and carboximide dye
in photographic material and process A new color-forming 4-(4'-secondary or tertiary-amino)anilino-1-carboxamidonaphthalene dye precursor in a photographic material and process enables formation of... |
| US-4,536,597 |
Selective hydrocarboxylation of propylene to isobutyric acid A process for the selective hydrocarboxylation of propylene to produce predominantly isobutyric acid in the liquid phase is provided. The reaction of propylene,... |
| US-4,536,596 |
Extraction of amino acids from aqueous solution with dithiophosphinates A method for the extraction of certain amino acids from aqueous solutions by contacting said solutions with various dithiophosphinates in conjunction with a... |
| US-4,536,595 |
Process for the preparation of alpha-aryl-propionic acids and alkaline
salts thereof Alpha-arylpropionic acids and alkaline salts thereof are prepared by catalytic reaction with carbon monoxide of the corresponding secondary halids in an... |
| US-4,536,594 |
Process for the preparation of beta-disubstituted monocarboxylic acids A process for the preparation of beta-disubstituted monocarboxylic acids derived from tertiary acyclic, monocyclic or bicyclic hydrocarbons. The process consists... |
| US-4,536,593 |
Process for the preparation of sterically hindered
hydroxphenylcarboxylic acid esters If the transesterification of esters of the formula ##STR1## with alcohols of the formula III A--(OH).sub.m is catalyzed by successive treatment with... |
| US-4,536,592 |
2-Substituted prostaglandins The present invention encompasses 16-alkyl, 16-hydroxy-2-substituted prostaglandins which exhibit cytoprotective and antisecretory activity with greatly reduced... |
| US-4,536,591 |
Insecticidal [1,1'-biphenyl]-3-ylmethyl esters [1,1'-Biphenyl]-3-ylmethyl pyrethroid esters, as well as processes, uses, and intermediates thereto, are disclosed. The [1,1'-biphenyl]-3-ylmethyl pyrethroid... |
| US-4,536,590 |
Phenyl-containing organopolysiloxanes Phenyl-containing organopolysiloxane fluids characterized by the formula, ##STR1## wherein Ph is phenyl, R is hydrogen, trimethylsilyl or mixtures thereof ... |
| US-4,536,589 |
Polymers of ferrocene Novel linear polymers of ferrocene are prepared by the reaction of 1,1'-dilithioferrocene with controlled amounts of a dihaloorganylphosphine, arsine or stibine.... |
| US-4,536,588 |
Acetal glycol diacrylates and process for producing them Acetal glycol diacrylates of the formula: ##STR1## wherein R.sub.1 represents H or CH.sub.3 and R.sub.2 represents CH.sub.3, C.sub.2 H.sub.5 or C.sub.3... |
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