US2395034A - Cartridge crystal holder - Google Patents

Cartridge crystal holder Download PDF

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Publication number
US2395034A
US2395034A US490027A US49002743A US2395034A US 2395034 A US2395034 A US 2395034A US 490027 A US490027 A US 490027A US 49002743 A US49002743 A US 49002743A US 2395034 A US2395034 A US 2395034A
Authority
US
United States
Prior art keywords
crystal
container
crystal element
cartridge
holder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US490027A
Other languages
English (en)
Inventor
Samuel A Bokovoy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Federal Telephone and Radio Corp
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL135534D priority Critical patent/NL135534B/xx
Priority to NL63593D priority patent/NL63593C/xx
Priority to BE465779D priority patent/BE465779A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US490027A priority patent/US2395034A/en
Priority to GB10621/44A priority patent/GB577625A/en
Application granted granted Critical
Publication of US2395034A publication Critical patent/US2395034A/en
Priority to CH253105D priority patent/CH253105A/de
Priority to FR938195D priority patent/FR938195A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders or supports
    • H03H9/09—Elastic or damping supports

Definitions

  • This invention relates to piezo-electric oscillator or resonator units for crystal controlled oscillator circuits and the like and consists of an improved unit assembly of crystal and holder 'therefor which is particularly simple Iand economical in manufacture and offers important advantages particularly in the manner of support for the crystal as a result of which the vibration of the crystal element is restrained to the minimum or to a negligible degree.
  • the improved unit consists of a substantially rectangular crystal element supported within a holder of preferably hollow cylindrical form with the crystal disposed in an oblique position therein so as to have point contact only with the internal cylindrical surface of the holder at each end thereof and at pposite sides of the respective crystal end portions thereby to reduce to the minimum any damping effect on the crystal vibration.
  • This crystal mounting arrangement further permits of a structural embodiment of desired simplicity wherein the cylindrical holder is made of glass tubing to which are fitted end terminal caps having internally connected therewith spring contact elements engaging with the crystal from opposite sides, resiliently to secure it in position and t0 establish electrical connection thereto at its end portions.
  • a resonator unit wherein the crystal is securely positioned and in a manner to permit unrestrained vibration thereof. It moreover lends itself readily to exhausting of the container for improved operation and greater prOleC- tion and durability.
  • the improved holder further readily accommodates crystals of altered thickness and dimensions permitting a desirable range of adjustment of oscillation values to meet varied circuit conditions or requirements.
  • Fig. 1 is a vertical, longitudinal, sectional view of the improved oscillator unit of the present invention.
  • Fig. 2 isa vertical, cross-sectional view thereof taken on line 2-2 of Fig. 1.
  • Fig. 3 is a perspective view of the crystal element partially broken away indicating the manner of support.
  • crystal resonator unit is of a cartridge type wherein the holder or container for the crystal element is composed of a section of hollow cylindrical glass tubing I, or tubing of other suitable insulating material such as Isolantite or Bakelite, the ends of which are closed by metal terminal cap members 2 providing end walls and annular flanges 3 overlying the tube ends and permanently secured thereto by a suitable sealing cement.
  • the crystal oscillator or resonator element 4 of elongated rectangular form and of suitable length for spaced relation with reference to the end walls of the container.
  • the resonator element is shown as the customarily employed crystal having its opposite larger ilat surfaces provided with the usual metallic electrode coating such as silver.
  • the crystal as will be noted is supported by corner edge or point contact only at its end portions, the point supporting contacts being as shown in Fig. 3 at :rat the upper corner edges at one end of the crystal and at the lower corner edges y-y at the opposite end thereof.
  • the two point support of the crystal at each end and at opposite sides thereof, las permits of uninterrupted vibration of the crystal body throughout the full length thereof while at the same time ailording substantial support therefor.
  • the crystal is retained in its supporting position under resilient pressure by the engagement therewith of the flat metal spring contact members 8 6 secured by bracing to the inner walls of the cap terminals and formed with the reverse turn spring contact portions 1-1 having pressure engagement with the upper and lower surfaces, respectively, of the crystal as shown.
  • the spring contact members in the reversely directed arrangement as shown, provide for effective electrical contact with the silvered coating of the resonator and incident to their position of engagement, at opposite sides of and adjacent the crystal extremities, have a negligible restraining effect or damping of the crystal vibration.
  • the improved resonator unit is particularly simple and economical to make, may readily be evacuated for operation under most favorable conditions,y is adapted to accommodate crystals varied in size or thickness -ilrmly retained in its proper position safe from dislodgement under normal usage.
  • a frequency determining unit of the character described comprising a tubular container member and a crystal element of substantially rectangular form positioned obliquely within the container, each end of the crystal element making contact at two points thereof respectively and at opposite sides thereof with the inner surface of the container.
  • a frequency determining unit of the character described comprising a container providing an enclosure and support for a piezo-electric crystal element and a crystal element of rectangular form positioned therein to have corner supporting contact only at its respective ends and at the opposite sides thereof.
  • a piezo-electric structure comprising a tubular container member, a crystal element of substantially rectangular form positioned obliquely within the container, each end of the crystal element engaging at two corner points thereof respectively and at opposite sides thereof with the inner surface of the container, and resilient contact members arranged to provide resilient support for the end portions of the sides opposite the points of engagement.
  • a frequency determining unit of the character described comprising a hollow cylindrical insulating container member, a crystal element of substantially rectangular form positioned oblquely within the container member for corner asoaoss of the and resilient terminal cmtact memberspositionedtoengsgeendportionsofthe .sidesoppositethepointsofmementard electricallyconnected to the cap members.
  • Afrequency determiningunitofthecharacter described comprising an elongated tubular insulating container member, a crystal element of substantially rectangular form positioned obliquely and lengthwise within the container to have corner supporting engagement with the inner surface of the container at the ends and at opposite edges of the crystal element, terminal capmembersilttedtoclosetheendsoi'thecontainer member and resilient contact members of electrical conducting material-connected to the inner surfaces of the cap members and Yformedwithinwardlyextendingandrevex'sely turned resilient contact portions positioned to engage the end portions of the Crystal faces opposite the points of mement for retaining the position of the crystal element and making electrical connection thereto.
  • a piezo-electric crystal assembly comprising a support of insulating material formed to provide inner surfaces oppositely directed, a crystal element positioned in angular relation to said surfaces to have corner supporting contact therewith for end supporting engagement only at the opposite sides of the respective ends of the crystal and resilient pressure elements supported for pressure engagement with the crystal end portions at the sides opposite to the supporting contact.
  • a piezo-electric crystal bly comprising a support of insulating material formed to provide inner surfaces oppositely directed, a crystal element of substantially rectangular plate form positioned in angular relation to said surfaces to have corner supporting contact therewith for end supporting engagement only at the opposite sides of the respective ends of the crystal, said crystal being provided on its faces with electrode plating and resilient contact elements supported for pressure engagement with the electrodes at tl e supporting engagement at opposite sides of the I crystal element with the internal surface of the container, terminal cap members closing the ends sides opposite to the supporting contact of the crystal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
US490027A 1943-06-08 1943-06-08 Cartridge crystal holder Expired - Lifetime US2395034A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL135534D NL135534B (en)) 1943-06-08
NL63593D NL63593C (en)) 1943-06-08
BE465779D BE465779A (en)) 1943-06-08
US490027A US2395034A (en) 1943-06-08 1943-06-08 Cartridge crystal holder
GB10621/44A GB577625A (en) 1943-06-08 1944-06-02 Improved piezo-electric crystal holder of the cartridge type
CH253105D CH253105A (de) 1943-06-08 1946-02-21 Piezoelektrischer Resonator.
FR938195D FR938195A (fr) 1943-06-08 1946-03-29 Supports de cristaux et analogues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US490027A US2395034A (en) 1943-06-08 1943-06-08 Cartridge crystal holder

Publications (1)

Publication Number Publication Date
US2395034A true US2395034A (en) 1946-02-19

Family

ID=23946311

Family Applications (1)

Application Number Title Priority Date Filing Date
US490027A Expired - Lifetime US2395034A (en) 1943-06-08 1943-06-08 Cartridge crystal holder

Country Status (6)

Country Link
US (1) US2395034A (en))
BE (1) BE465779A (en))
CH (1) CH253105A (en))
FR (1) FR938195A (en))
GB (1) GB577625A (en))
NL (2) NL135534B (en))

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851193A (en) * 1973-12-10 1974-11-26 Hughes Aircraft Co Horizontal crystal mounting assembly
US4145627A (en) * 1976-02-25 1979-03-20 Kabushiki Kaisha Daini Seikosha Crimped seal piezoelectric resonator package
US4485325A (en) * 1982-03-04 1984-11-27 Murata Manufacturing Co., Ltd. Housing and mounting for a chip-like piezoelectric vibrator component
US4527419A (en) * 1983-05-23 1985-07-09 Mark Telephone Products, Inc. Sensor for underground duct probe
US4542315A (en) * 1984-05-15 1985-09-17 Murata Manufacturing Co., Ltd. Chip-shaped piezoelectric vibrator mount
US4588918A (en) * 1984-05-08 1986-05-13 Murato Mfg. Co., Ltd. Housing and mount for chip type piezoelectric resonator
US4899076A (en) * 1987-03-06 1990-02-06 Citizen Watch Co., Ltd. Piezoelectric oscillator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206441B (en) * 1987-06-05 1992-02-05 Citizen Watch Co Ltd A piezoelectric oscillator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851193A (en) * 1973-12-10 1974-11-26 Hughes Aircraft Co Horizontal crystal mounting assembly
US4145627A (en) * 1976-02-25 1979-03-20 Kabushiki Kaisha Daini Seikosha Crimped seal piezoelectric resonator package
US4485325A (en) * 1982-03-04 1984-11-27 Murata Manufacturing Co., Ltd. Housing and mounting for a chip-like piezoelectric vibrator component
US4527419A (en) * 1983-05-23 1985-07-09 Mark Telephone Products, Inc. Sensor for underground duct probe
US4588918A (en) * 1984-05-08 1986-05-13 Murato Mfg. Co., Ltd. Housing and mount for chip type piezoelectric resonator
US4542315A (en) * 1984-05-15 1985-09-17 Murata Manufacturing Co., Ltd. Chip-shaped piezoelectric vibrator mount
US4899076A (en) * 1987-03-06 1990-02-06 Citizen Watch Co., Ltd. Piezoelectric oscillator

Also Published As

Publication number Publication date
GB577625A (en) 1946-05-24
NL63593C (en))
NL135534B (en))
FR938195A (fr) 1948-09-07
BE465779A (en))
CH253105A (de) 1948-02-15

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