US2502970A - Electrical device - Google Patents

Electrical device Download PDF

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Publication number
US2502970A
US2502970A US70270946A US2502970A US 2502970 A US2502970 A US 2502970A US 70270946 A US70270946 A US 70270946A US 2502970 A US2502970 A US 2502970A
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Prior art keywords
metal
crystal
resin
material
terminal
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Expired - Lifetime
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Robert B Manning
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Western Electric Co Inc
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Western Electric Co Inc
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    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezo-electric or electrostrictive resonators or networks
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/42Piezoelectric device making
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/47Molded joint
    • Y10T403/477Fusion bond, e.g., weld, etc.

Description

April 1950 R. B. MANNING 2,502,970

suzcmxcm. DEVICE Filed Oct. 11, 1946 INVE/V TOR R. 8. MA NN/NG Patented Apr. 4, 1950 ELECTRICAL DEVICE Robert B. Manning, Westfleld, N. J., assignor to Western Electric Com 1 York, N. Y., a corner pany, Incorporated, New ation of New York Application October 11, 1946, Serial No. 702,709

This invention relates to an electrical device,

and more particularly to a metal coated crystal having a metal terminal wire secured thereto.

There are numberless uses in the electrical arts for a thin slab of dielectric crystalline material, commonly called a crystal in those arts, having a closely adherent coating of metal on one or both large faces and having a terminal wire or rod secured to be mechanically rigid with the crystal and electrically connected to a metal coating thereon. Such crystals have usually been made from hard and toughly durable natural mineral crystals, e. g., quartz par excellence. However, the supply of suitable natural material is insufiicient to meet the demand, and crystals artificially grown from various soluble compounds which crystallize without water of crystallization and therefore are not, in general, eillorescent, are being used to supplement the materials obtainable from natural sources. Compounds such as ammonium dihydrogen phosphate, potassium dihydrogen phosphate and others are found to be satisfactory for such use. Crystalline material so derived does not have the mechanical strength nor the hardness nor the resistance to destruction by heat exhibited by crystalline silica in natural quartz. Methods and arrangements satisfactorily suitable for securing terminal wires to quartz crystals (crystal, without quotes, will hereinafter mean the slabs of the art) are often found to be impracticable for the far less rugged artificial crystals.

A prime object of the present invention is to provide a structure for the assembly of a crystal, a coating thereon, and a terminal therefor which shall be simple to make without breakage or failure and reliably durable in operation.

With the above and other objects in view the invention may be embodied in a crystal structure comprising a body of crystalline dielectri material having a smooth face thereon, a terminal base member having a corresponding face thereon, and apposed against the said face of the crystal, and a layer of thermoplastic adhesive material interposed between the apposed faces and securing the terminal base to the crystalline body, and consisting of more than 85% of a synthetic thermoplastic resin and less than 15% of a synthetic thermosetting resin.

Other objects and features of the invention will appear from the following detailed description of an illustrative embodiment thereof, taken in connection with the accompanying drawing in which the single figure is a very much enlarged view in central vertical longitudinal section of a portion 3 Claims. (Cl. 171-327) of a crystal constructed in accordance with the invention.

The, illustrative embodiment of the invention herein disclosed comprises a thin, flat slab I0 of suitable crystalline material having a smooth upper face upon which rests a terminal base member l2 of suitable metal in the form of a lamella or small plate of sheet metal, here shown as a circular disk, but which may be of any desired peripheral contour so long as its under face is smooth and conforms to the upper face of the slab Ill. The base I2 is mechanically secured to the slab II] by an intercalated layer ll of suitable thermoplastic cement, the thermoplastic character of this cement being the characterizing, crucial feature of the present invention. A terminal wire or rod H is secured rigidly to the base 12, e. g., by welding as indicated at l3, by soldering, or by having been made originally integral therewith. And, finally, a metal coating l 5 extends over the upper surface of the slab l0 and over the exposed sides and top of the base I2.

While the invention is applicable in the case of crystals of natural quartz, it finds its use primarily when the slab I0 is of less rugged crystalline substance such as the artificially grown crystalline materials mentioned above. The coating I5 may preferably be of silver, but may be of any metal desired in particular cases. Similarly, the terminal II and terminal base l2 may be of any material suitable for the purpose in hand. The specific composition or character of none of these elements is material to the invention.

The case of the adhesive layer I, however, is different. Here the nature and composition of the substance are crucially material to and characteristic of the invention. It has been found that, for satisfactory assembly of the parts as shown, the substance of the adhesive layer ll must be a composition comprising mainly a thermosplastic synthetic resin, preferably polymerized vinyl acetate, to which has been added a small proportion of thermosetting synthetic resin, e. g., the phenol-formaldehyde condensation product familiarly known as Bakelite. The admixture of thermosetting resin must be sufficiently small in proportion to ensure that the thermoplastic character of the composition is not destroyed, and sufficiently large to raise the softening temperature of the compound to a value practicable for the intended use of the finished device.

Copending application Serial No. 684,257, flied July 7, 1946, now U. S. Patent No. 2,468,594, by the present inventor together with another, dis- 3 closes and specifically claims a composition applicable to the present use. The cement therein described is broadly Parts by weight Methyl acetate solvent 38 to 50 Vinyl acetate polymer 12 to 19 Phenol-formaldehyde resin 0.2 to 2.0 Mica flour to 45 For present purposes the mica flour will, in most instances, be reduced materially or even entirely omitted. Thus, where the layer It is desired to be 01' minimum thickness, a preferred composition for the cement without any filler may be:

Parts by weight Methyl acetate solvent 38 to 50 Vinyl acetate polymer 12 to 19 Phenol-formaldehyde resin 0.2 to 2.0

For the particular case where the slab I9 has a frostily smooth surface and the disk I! is of beryllium copper alloy, the preferred composition of the cement is one containing no filler follows:

III

' Parts by weight Methyl acetate solvent About 43 Vinyl acetate polymer About 17 Phenol-formaldehyde resin About 1.2

Per cent by weight 2. Vinyl acetate polymer 85 to 99 Phenol-formaldehyde resin 15to 1 3. Vinyl acetate polymer About 94 Phenol-formaldehyde resin About 6 What is claimed is: 1. In an electrical crystal device having a member of crystalline material and a terminal base member of metal having mounted thereon a metal wire, the combination with the said members of adhesive material between the said members to hold the same together and consisting of or more of a synthetic thermoplastic resin and a quantity of a synthetic thermosetting resin not exceeding 15%.

2. In an electrical crystal device having a member of crystalline material and a terminal base member of metal having mounted thereon a metal wire, the combination with the said members of adhesive material between the said members to hold the same together and consisting of Per cent Vinyl acetate polymer resin 85 to 99 Phenol-formaldehyde resin 15to l 3. In an electrical crystal device having a member of crystalline material and a terminal base member of metal having mounted thereon a metal wire. the combination with the said members of adhesive material between the said members to hold'the same together and consisting of Per cent Vinyl acetate polymer resin About 94 Phenol-formaldehyde resin About 6 ROBERT B. MANNING.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

US2502970A 1946-10-11 1946-10-11 Electrical device Expired - Lifetime US2502970A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648785A (en) * 1939-08-02 1953-08-11 Int Standard Electric Corp Integral electrode with lead wire anchor for piezoelectric crystal
US3016578A (en) * 1957-12-11 1962-01-16 Frederick W Rohe Moldable insert panel and method of assembly
US3054004A (en) * 1957-06-24 1962-09-11 Vitro Corp Of America Piezoelectric crystal holder
US4396221A (en) * 1980-10-06 1983-08-02 The Regents Of The University Of California Hinged vehicle window assembly
EP0096128A1 (en) * 1980-10-06 1983-12-21 Donnelly Corporation Vehicle window assembly
US4476612A (en) * 1981-05-18 1984-10-16 Stiftelsen Prodinor Gripping unit
US5475956A (en) * 1992-09-25 1995-12-19 Donnelly Corporation Panel assembly
US5551197A (en) * 1993-09-30 1996-09-03 Donnelly Corporation Flush-mounted articulated/hinged window assembly
US5635281A (en) * 1994-08-12 1997-06-03 Donnelly Corporation Glazing using a melt-processible gasket material
US5667896A (en) * 1995-04-11 1997-09-16 Donnelly Corporation Vehicle window assembly for mounting interior vehicle accessories
US5853895A (en) * 1995-04-11 1998-12-29 Donnelly Corporation Bonded vehicular glass assemblies utilizing two-component urethanes, and related methods of bonding
US6051912A (en) * 1997-02-24 2000-04-18 Nikon Corporation Vibration actuator
US20040160072A1 (en) * 1995-04-11 2004-08-19 Donnelly Corporation, A Michigan Corporation Vehicle interior accessory system
US20080196816A1 (en) * 1995-04-11 2008-08-21 Magna Donnelly Corporation Method for manufacturing an articulatable vehicular window assembly

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1692074A (en) * 1927-04-21 1928-11-20 William H Burtis Oscillation generator
US1994487A (en) * 1930-01-24 1935-03-19 Brush Dev Co Method of applying electrodes to piezo crystals
US1995257A (en) * 1932-02-29 1935-03-19 Charles B Sawyer Piezo-electric device and method of producing same
US2227212A (en) * 1938-07-23 1940-12-31 Catalin Corp Laminated material and method of manufacture
US2371613A (en) * 1942-12-31 1945-03-20 Bell Telephone Labor Inc Piezoelectric crystal apparatus
US2372074A (en) * 1940-04-26 1945-03-20 Westinghouse Electric & Mfg Co Bonded laminated magnetic material
US2386279A (en) * 1942-07-21 1945-10-09 Raymond W Tibbetts Piezoelectric device
US2392574A (en) * 1943-02-13 1946-01-08 Us Rubber Co Adhesives
US2433098A (en) * 1944-02-25 1947-12-23 Monsanto Chemicals Polyvinyl acetal resin composition
US2442018A (en) * 1943-04-23 1948-05-25 Carbide & Carbon Chem Corp Polyvinyl butyral resin composition

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1692074A (en) * 1927-04-21 1928-11-20 William H Burtis Oscillation generator
US1994487A (en) * 1930-01-24 1935-03-19 Brush Dev Co Method of applying electrodes to piezo crystals
US1995257A (en) * 1932-02-29 1935-03-19 Charles B Sawyer Piezo-electric device and method of producing same
US2227212A (en) * 1938-07-23 1940-12-31 Catalin Corp Laminated material and method of manufacture
US2372074A (en) * 1940-04-26 1945-03-20 Westinghouse Electric & Mfg Co Bonded laminated magnetic material
US2386279A (en) * 1942-07-21 1945-10-09 Raymond W Tibbetts Piezoelectric device
US2371613A (en) * 1942-12-31 1945-03-20 Bell Telephone Labor Inc Piezoelectric crystal apparatus
US2392574A (en) * 1943-02-13 1946-01-08 Us Rubber Co Adhesives
US2442018A (en) * 1943-04-23 1948-05-25 Carbide & Carbon Chem Corp Polyvinyl butyral resin composition
US2433098A (en) * 1944-02-25 1947-12-23 Monsanto Chemicals Polyvinyl acetal resin composition

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648785A (en) * 1939-08-02 1953-08-11 Int Standard Electric Corp Integral electrode with lead wire anchor for piezoelectric crystal
US3054004A (en) * 1957-06-24 1962-09-11 Vitro Corp Of America Piezoelectric crystal holder
US3016578A (en) * 1957-12-11 1962-01-16 Frederick W Rohe Moldable insert panel and method of assembly
US4396221A (en) * 1980-10-06 1983-08-02 The Regents Of The University Of California Hinged vehicle window assembly
EP0096129A1 (en) * 1980-10-06 1983-12-21 Donnelly Corporation Hinged vehicle window assembly
EP0096128A1 (en) * 1980-10-06 1983-12-21 Donnelly Corporation Vehicle window assembly
US4476612A (en) * 1981-05-18 1984-10-16 Stiftelsen Prodinor Gripping unit
US5475956A (en) * 1992-09-25 1995-12-19 Donnelly Corporation Panel assembly
US5707473A (en) * 1992-09-25 1998-01-13 Donnelly Corporation Method for making a panel assembly
US6871450B2 (en) 1993-09-30 2005-03-29 Donnelly Corporation Articulated window assembly for vehicles
US8235452B2 (en) 1993-09-30 2012-08-07 Magna Mirrors Of America, Inc. Window assembly for vehicle
US5704173A (en) * 1993-09-30 1998-01-06 Donnelly Corporation Hinged window assembly
US5551197A (en) * 1993-09-30 1996-09-03 Donnelly Corporation Flush-mounted articulated/hinged window assembly
US6128860A (en) * 1993-09-30 2000-10-10 Donnelly Corporation Articulated window panel for vehicles
US20090293368A1 (en) * 1993-09-30 2009-12-03 Donnelly Corporation Articulated window assembly for vehicles
US5966874A (en) * 1993-09-30 1999-10-19 Donnelly Corporation Hinged window assembly
US7588652B2 (en) 1993-09-30 2009-09-15 Donnelly Corp. Method for making an articulatable vehicular window assembly
US7360338B2 (en) 1993-09-30 2008-04-22 Magna Donnelly Corporation Window assembly suitable for use in a vehicle
US20050121942A1 (en) * 1993-09-30 2005-06-09 Donnelly Corporation, A Michigan Corporation Window assembly for a vehicle
US6298606B1 (en) 1993-09-30 2001-10-09 Donnelly Corporation Method for making articulated window assembly for vehicles
US5822932A (en) * 1994-08-12 1998-10-20 Donnelly Corporation Method for making a vehicle window panel using a melt-processible gasket material
US5635281A (en) * 1994-08-12 1997-06-03 Donnelly Corporation Glazing using a melt-processible gasket material
US6231111B1 (en) 1995-04-11 2001-05-15 Donnelly Corporation Window panel assembly for vehicles
US20020111410A1 (en) * 1995-04-11 2002-08-15 Donnelly Corporation, A Michigan Corporation Bonded vehicular glass assemblies utilizing urethane adhesive and method for making same
US6490788B2 (en) 1995-04-11 2002-12-10 Donnelly Corporation Method for installing a vehicle window assembly
US20040160072A1 (en) * 1995-04-11 2004-08-19 Donnelly Corporation, A Michigan Corporation Vehicle interior accessory system
US20040214947A1 (en) * 1995-04-11 2004-10-28 Donnelly Corporation, A Michigan Corporation Bonded vehicular glass assemblies utilizing two-component urethanes adhesive
US6846039B2 (en) 1995-04-11 2005-01-25 Donnelly Corporation Bonded vehicular glass assemblies utilizing urethane adhesive and method for making same
US6319344B1 (en) 1995-04-11 2001-11-20 Donnelly Corporation Bonded vehicular glass assemblies utilizing two component adhesives
US6068719A (en) * 1995-04-11 2000-05-30 Donnelly Corporation Methods of bonding vehicular glass assemblies utilizing two component urethanes
US7332225B2 (en) 1995-04-11 2008-02-19 Donnelly Corporation Bonded vehicular glass assemblies utilizing two-component urethanes adhesive
US8322073B2 (en) 1995-04-11 2012-12-04 Magna Mirrors Of America, Inc. Vehicular rear sliding window assembly
US20080196816A1 (en) * 1995-04-11 2008-08-21 Magna Donnelly Corporation Method for manufacturing an articulatable vehicular window assembly
US6019411A (en) * 1995-04-11 2000-02-01 Donnelly Corporation Overhead window assembly for vehicles
US5853895A (en) * 1995-04-11 1998-12-29 Donnelly Corporation Bonded vehicular glass assemblies utilizing two-component urethanes, and related methods of bonding
US7838115B2 (en) 1995-04-11 2010-11-23 Magna Mirrors Of America, Inc. Method for manufacturing an articulatable vehicular window assembly
US8048529B2 (en) 1995-04-11 2011-11-01 Magna Mirrors of America, Inc Vehicular rear sliding window assembly
US5667896A (en) * 1995-04-11 1997-09-16 Donnelly Corporation Vehicle window assembly for mounting interior vehicle accessories
US8668989B2 (en) 1995-04-11 2014-03-11 Magna Mirrors Of America, Inc. Vehicular sliding window assembly
US6051912A (en) * 1997-02-24 2000-04-18 Nikon Corporation Vibration actuator

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