US2399908A - Frequency determining unit - Google Patents

Frequency determining unit Download PDF

Info

Publication number
US2399908A
US2399908A US545847A US54584744A US2399908A US 2399908 A US2399908 A US 2399908A US 545847 A US545847 A US 545847A US 54584744 A US54584744 A US 54584744A US 2399908 A US2399908 A US 2399908A
Authority
US
United States
Prior art keywords
socket
base
crystal
cover
contacts
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
US545847A
Other languages
English (en)
Inventor
Bokovoy Samuel Alexander
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 BE460643D priority Critical patent/BE460643A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US545847A priority patent/US2399908A/en
Priority to GB17956/45A priority patent/GB596012A/en
Priority to CH256673D priority patent/CH256673A/de
Priority to FR926631D priority patent/FR926631A/fr
Application granted granted Critical
Publication of US2399908A publication Critical patent/US2399908A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders; Supports
    • H03H9/09—Elastic or damping supports

Definitions

  • Fig. Us a view in vertical, longitudinal section showing an approved embodiment of the features of the invention in a resonator unit structure adapted for'the protective mounting of a piezoelectric crystal element in the customary manner for thickness oscillation.
  • Fig. 2 is a top plan view of the-base member of Fig. 1 showing the contact members assembled therewith.
  • Fig. 31s a central vertical-cross sectional view taken on line 3-3 of Fig. 1 of the assembled os- Fig. 4 is a view generally similar to Fig. 3 but of the separable crystal and electrode elements.
  • l indicates a base portion or member of molded insulating material.
  • This base portion shown of rectangular form, has rigidly secured thereto ionframe member and the objections of its use is accomplished with a desirable improved compactness for reduction in. size and moreover in a man ner to insure of an improved removable relation and retaining of the parts.
  • a related structural arrangement wherein uponwithdrawing or separation of the base from the cover there is simultaneously eilected a partial withdrawal of the contained parts including the crystal electrodes and compression spring so as to efiect their partial removal into a projected position thereby to facilitate grasping by the fingers to expedite removal.
  • the cover socket is of elongated rectangular formation having parallel vertical side and end walls and having its inner wall surface formed with spacing shoulders or bosses II. It is further formed with its vertical side walls provided with vertically extending, centrally aligned,
  • the crystal element is shown at H of the customarily employed rectangular plate form and in the assembly is received within the socket and positioned between the opposite electrodes is likewise of rectangular plate formation and of a character to make proper electrical and cooperating contact with the face of the crystal in a manner to avoid damping of the vibrations.
  • the outerface of one of the electrodes, the ieft hand electrode as here shown, is engaged by the inner face of one of the resilient base contact plates 3 .
  • the opposite or right hand electrode is engaged by the inner enlarged turn it of compression coil spring II which is positioned to effect a. pressure clamping or supporting of the crystal element.
  • the vertical dimensions of the crystal and associated electrodes and washer are such as to be rather closely confined between the bosses I i of the cover and the upper surface of the base portion thereby to insure ofaccurate positioning and retention of these elements in cooperating relation.
  • the upper surface of the base portion is formed with an inward recess or groove is which in its dimensional relationship to the supporting flanges of the resilient contacts insures the proper alignment ofthe contact plates through assembling of the contact plateswith the block and terminal pins 2.
  • in the forming of the groove l8 spaced bosses is are provided in substantially vertical alignment with the bosses II to cooperate therewith in the positioning of the insert members.
  • the contact plates and also the pin terminals 2 may desirably be made of nickel silver so as to permit of their being soldered or welded without flux resulting in further advantage of avoiding loosev flux and acid influence.
  • Other modifications may be made therein without departing from the scope of the invention as defined in the claims.
  • the coil spring deslrably of the conical form as shown, is then inserted to hold the electrodes and crystal together.
  • the resilient contact plates 3, assembled with the base, are then engaged or-inserted within the grooves II of the cover member 5 and as they are advanced inwardly will engage the outer surfaces of the left hand electrode and the spring l1.
  • contact plates 3 will be inwardly deflected to establish-a final assembly and resilient clamping of the crystal as the base and cover are moved into homed inight'cause displacement of the spring from its intended position.
  • a polystyrene cement may be employed between the engaging surfaces ofthe base and cover thus to provide for hermetically sealing with the elimination of the screws.
  • a frequency determining unit of the eharacter described comprising a container formed to provide a socket for the reception of aresonator element, a crystal element and opposite electrodes associated therewith adapted to be received within the container, said container being composed of a cover. member and a separable base for assembly therewith, contact elements carried by the base and said cover being provided with guide means formed to effect deflection of the contacts into a contacting position upon assembling of the parts.
  • a frequency determining unit of the character described comprising a container formed to provide a socket for the reception of a resonator element, a crystal resonator and opposite elecmembers.
  • a frequency determining unit of the character described comprising a container formed to provide a socket for the reception of a resonator element, a crystal resonator element having opposite electrodes associated therewith received within the socket, a resilient element positioned to impart a holding pressure on the electrodes and crystal element, said container being composed of a cover member having a bottom opening socket and a base member fitted to close the socket, said base being provided with terminal pins for plug in connection and with projecting resilient contacts connected with the pins, the socket being formed with guideway grooves in tainer formed to provide a socket for the recep-' tion oi a resonator element, a crystal resonator element having opposite electrodes associated therewith positioned within the socket, a coil spring positioned to impart a holding pressure on the electrodes and crystal element, said conprovided with terminal pins for plug in connectainer being composed of a cover member having a.
  • a frequency determiningnnit oi the character described comprising an insulating container for the reception of a resonator element,-
  • a frequency determining unit of the character described comprising an insulating container for the reception of a resonator element
  • said container being composed of a cover memher having a bottom opening socket and a base member fitted to close the socket, said base being tion and with projecting resilient contacts connected with the pins, said cover socket being formed with guideway grooves in its side walls positioned for registration with the base contacts and having inward deflecting surfaces to be en.- gaged. by the contacts prior to full assembly, a crystal resonator'element, oppositely positioned electrodes and a resilient element'adapted to be inserted within said socket, one of said electrodes and said resilient element being engaged by the contacts when inwardly deflected for clamping the insert elements.
  • a frequency determining oi the character described comprising an insulating container for the reception or a resonator element, said container being composed of a'cover member having a bottom opening socket and a base said container being composed of a cover memher having a bottom opening socket and a base member fitted to close the'socket,'said base be-' ing provided with terminal pins for plug in connection and with projecting resilient contacts connected with the pins, said contacts having bases positioned within a socket in the basemember formed to determine the position of the contacts, said cover socket being formed with guideway grooves in its side walls positioned for registration with the base contacts and having inward deflecting surfaces to be engaged by the contacts in an intermediate assembly position, a crystal resonator element and oppositely inserted electrodes positioned within the cover socket and a resilient element positioned to impart a holding pressure on the electrodes and crystal elementand to be engaged by one of the contacts member fitted to close the socket, said base being provided with terminal pins for plug in connection and with projecting resilient

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
US545847A 1944-07-20 1944-07-20 Frequency determining unit Expired - Lifetime US2399908A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE460643D BE460643A (fr) 1944-07-20
US545847A US2399908A (en) 1944-07-20 1944-07-20 Frequency determining unit
GB17956/45A GB596012A (en) 1944-07-20 1945-07-13 Piezoelectric frequency determining unit
CH256673D CH256673A (de) 1944-07-20 1945-07-20 Piezoelektrischer Resonator.
FR926631D FR926631A (fr) 1944-07-20 1946-03-20 Assemblages pour dispositifs déterminateurs de fréquences

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US545847A US2399908A (en) 1944-07-20 1944-07-20 Frequency determining unit

Publications (1)

Publication Number Publication Date
US2399908A true US2399908A (en) 1946-05-07

Family

ID=24177786

Family Applications (1)

Application Number Title Priority Date Filing Date
US545847A Expired - Lifetime US2399908A (en) 1944-07-20 1944-07-20 Frequency determining unit

Country Status (5)

Country Link
US (1) US2399908A (fr)
BE (1) BE460643A (fr)
CH (1) CH256673A (fr)
FR (1) FR926631A (fr)
GB (1) GB596012A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482451A (en) * 1945-06-07 1949-09-20 Reeves Hoffman Corp Piezoelectric crystal holder
US2497966A (en) * 1946-01-26 1950-02-21 Reeves Hoffman Corp Crystal holder

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1766158B1 (de) * 1968-04-11 1972-05-25 Matsushita Electric Ind Co Ltd Piezoelektrische keramische resonatoreinheit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2482451A (en) * 1945-06-07 1949-09-20 Reeves Hoffman Corp Piezoelectric crystal holder
US2497966A (en) * 1946-01-26 1950-02-21 Reeves Hoffman Corp Crystal holder

Also Published As

Publication number Publication date
BE460643A (fr)
GB596012A (en) 1947-12-24
FR926631A (fr) 1947-10-07
CH256673A (de) 1948-08-31

Similar Documents

Publication Publication Date Title
US2399908A (en) Frequency determining unit
US2483801A (en) Intermediate frequency unit
US2488781A (en) Crystal holder
GB727380A (en) Improvements in means for detachably securing leads to electrical connecting devices
US2784326A (en) Crystal mounting
US2043746A (en) Cartridge type vibrator
US2825881A (en) Vacuum tube socket
US2133647A (en) Electromechanical vibrator
US2425481A (en) Quartz oscillator plateholder
US2429826A (en) Crystal holder
US2329321A (en) Piezoelectric device
US1619854A (en) Piezo-electric-crystal apparatus
US2677775A (en) Retaining frame piezoelectric crystal mounting
US2430478A (en) Crystal holder
US2410193A (en) Crystal holder
US2259739A (en) Vacuum tube socket
US1325865A (en) Vacuum-tube socket
US2399919A (en) Frequency determining unit
US2457145A (en) Mounting for piezoelectric crystals
US2498585A (en) Piezoelectric crystal holder
US2405181A (en) Frequency determining unit
US2404445A (en) Crystal
US1628802A (en) perrem
US2392690A (en) Piezoelectric crystal holder
US2049919A (en) Terminal for electrical devices