US2606985A - Potentiometer or resistor element - Google Patents

Potentiometer or resistor element Download PDF

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Publication number
US2606985A
US2606985A US264492A US26449251A US2606985A US 2606985 A US2606985 A US 2606985A US 264492 A US264492 A US 264492A US 26449251 A US26449251 A US 26449251A US 2606985 A US2606985 A US 2606985A
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United States
Prior art keywords
base
resistor
moulded
terminal
ring
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
US264492A
Inventor
Bell Ernest Alfred De
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.)
Duracell Inc USA
Original Assignee
PR Mallory and Co Inc
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Filing date
Publication date
Application filed by PR Mallory and Co Inc filed Critical PR Mallory and Co Inc
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Publication of US2606985A publication Critical patent/US2606985A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C10/00Adjustable resistors
    • H01C10/30Adjustable resistors the contact sliding along resistive element
    • H01C10/32Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
    • 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
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49082Resistor making
    • Y10T29/49101Applying terminal
    • 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
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49002Electrical device making
    • Y10T29/49117Conductor or circuit manufacturing
    • Y10T29/49169Assembling electrical component directly to terminal or elongated conductor

Definitions

  • This invention relates to potentiometers or resistor elements which are particularly suitable for tele-communication circuits for controlling the output volume whether automatically or manually.
  • Another object of the invention is to provide a ring of non-metallic material in a moulded base which is electrically connected to a terminal partly embedded in the base.
  • a further object of the invention is to provide a terminal blank which is cropped to form three separat terminals.
  • Fig. l is a front view of a moulded resistor assembly.
  • Fig. 2 is a section on line AB of Fig. 1, and
  • Fig. 3 is an exploded view of the Whole assembly.
  • the base plate I has an annular recess 3 around a central aperture 3 and an interrupted circular recess 4 with apertures 5 at or near the respective ends.
  • the backing plate 2 has a central opening 5 of the same diameter as the aperture 3 in the base.
  • a resistor track I of compressed powdered resistor material and a thermo-setting binder is placed in the interrupted recess.
  • I next provide a cold pressed ring 8 composed of powdered carbon and a thermo-setting binder for placing in the annular recess 3 in the base I.
  • An E-shaped metal terminal blank 9 is provided, in which the ends of the outer limbs I0, I I are turned over at right angles, for serving as terminal connections to th ends of the resistor I and the intermediate limb I2 is similarly turned over to provide an electrical connection to the ring 8.
  • the E-shaped terminal blank 9 is radially disposed on the reverse side of the base in such a manner that th turned up ends of the outer limbs enter the holes 5 at the respective ends of the interrupted recess 4.
  • the turned up 2 end of limb I2 of the terminal blank extends into a slot I3 in the annular recess 3.
  • the backing plate 2 face to face with the reverse side of the base I with the terminal blank 9 interposed ther-ebetween.
  • the semi-circular element forming the resistor track I is placed in the interrupted recess 4 and the turned up ends of the E-shaped terminal blank 9 engage with the respective ends of the track I.
  • the carbon ring 8 is then placed in the annular recess 3 in the base I into contact with the turned up end of the centre limb I2 of the E-shaped terminal 9.
  • a resistor of the moulded type a base of moulded insulation material, said base having an interrupted cavity, a moulded resistor element in the cavity and a conductin ring of non-metallic material placed around a central aperture in the base, terminal tags embedded in said moulded base forming separate terminals, two terminal tags electrically connected to the respective ends of the moulded resistor and a third tag electrically connected to the non-metallic ring.
  • a resistor of the moulded type a base of moulded insulation material, a backing plate, said base having an interrupted cavity, and a recessed central aperture, and said backing plate has a centre hole of the same diameter as the aperture in th base, a moulded resistor element embedded in the cavity and a conducting ring of non-metallic material is ,placed in the flanged aperture in said base, terminal tags on the reverse side of the base forming separate terminals, two terminal tags electrically connected to the respective ends of the moulded resistor and a third tag electrically connected to the non-metallic ring, said backing plate is placed on the re verse side of the base and the whol assembly is moulded into a single unit.
  • a method of forming a resistor element including a moulded backing plate with a central opening, an E-shaped terminal blank with turned up ends, a base having an interrupted cavity with a hole at each end and an annular recess with an incision therein, comprising the steps of placing the terminal blank on the reverse side of the base with the turned up ends of the outer limbs passing through the holes in the cavity and the turned up end of the centre limb entering the incision in the base, then placing th backing plate on the reverse side of the base, filling the 10 cavity with a powdered resistance material and a thermo-plastic binder, inserting a non-metallic conductive ring in the aperture in the base, applying heat and. pressure to the whole assembly and finally cropping the terminal blank into three separate terminal tags.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Apparatuses And Processes For Manufacturing Resistors (AREA)

Description

Aug. 12, 1952 E, 35 L 2,606,985
POTENTIOMETER OR RESISTOR ELEMENT Filed Dec. 26, 1951 fi rwemflfz [RA/ESTALFRED DEBELL PIC-3.3.
Patented Aug. 12, 1952 POTENTIOMETER OR RESISTOR ELEMENT Ernest Alfred De Bell, Wroughton, England, as-
signor, by mesne assignments, to P. R. Mallory & Company, Incorporated, Indianapolis, Ind.
Application December 26, 1951, Serial No. 264,42 In Great Britain February 5, 1951 3 Claims. 1
This invention relates to potentiometers or resistor elements which are particularly suitable for tele-communication circuits for controlling the output volume whether automatically or manually.
It has previously been proposed to provide a resistance devic consisting of a moulded base which contains a resistor element and a continuous metallic terminal and collector ring, said resistor element and collector ring are embedded in one race of the base, and the terminal portion of the collector ring is partly embedded in the base and extends therefrom. The resistor element is provided with a tap terminal at the respective ends. An object of the present invention is to dispense with the metal ring.
Another object of the invention is to provide a ring of non-metallic material in a moulded base which is electrically connected to a terminal partly embedded in the base.
A further object of the invention is to provide a terminal blank which is cropped to form three separat terminals.
The invention will now be described with reference to the accompanying drawings, in which:
Fig. l is a front view of a moulded resistor assembly.
Fig. 2 is a section on line AB of Fig. 1, and
Fig. 3 is an exploded view of the Whole assembly.
Referring to the drawings:
I provide a cold pressed insulated base I and backing plate 2 in the form of two discs. The base plate I has an annular recess 3 around a central aperture 3 and an interrupted circular recess 4 with apertures 5 at or near the respective ends. The backing plate 2 has a central opening 5 of the same diameter as the aperture 3 in the base. A resistor track I of compressed powdered resistor material and a thermo-setting binder is placed in the interrupted recess.
I next provide a cold pressed ring 8 composed of powdered carbon and a thermo-setting binder for placing in the annular recess 3 in the base I.
An E-shaped metal terminal blank 9 is provided, in which the ends of the outer limbs I0, I I are turned over at right angles, for serving as terminal connections to th ends of the resistor I and the intermediate limb I2 is similarly turned over to provide an electrical connection to the ring 8.
In assembly, the E-shaped terminal blank 9 is radially disposed on the reverse side of the base in such a manner that th turned up ends of the outer limbs enter the holes 5 at the respective ends of the interrupted recess 4. The turned up 2 end of limb I2 of the terminal blank extends into a slot I3 in the annular recess 3. I next place the backing plate 2 face to face with the reverse side of the base I with the terminal blank 9 interposed ther-ebetween.
The semi-circular element forming the resistor track I is placed in the interrupted recess 4 and the turned up ends of the E-shaped terminal blank 9 engage with the respective ends of the track I.
The carbon ring 8 is then placed in the annular recess 3 in the base I into contact with the turned up end of the centre limb I2 of the E-shaped terminal 9.
I next place the assembly in a mould and heat same to about C. and apply pressure when the component parts are moulded together, thereby forming on one face of the base I an interrupted resistor track I and a separate carbon ring 8, and two limbs of the terminal blank 9 are embedded in the ends of the resistor track and the other limb of said blank 9 extends to the carbon ring. The E-shaped terminal blank 9 is then cropped to provide three separate terminals which extend from the periphery of the base as shown in Fig. 1.
I claim:
1. In a resistor of the moulded type a base of moulded insulation material, said base having an interrupted cavity, a moulded resistor element in the cavity and a conductin ring of non-metallic material placed around a central aperture in the base, terminal tags embedded in said moulded base forming separate terminals, two terminal tags electrically connected to the respective ends of the moulded resistor and a third tag electrically connected to the non-metallic ring.
2. In a resistor of the moulded type a base of moulded insulation material, a backing plate, said base having an interrupted cavity, and a recessed central aperture, and said backing plate has a centre hole of the same diameter as the aperture in th base, a moulded resistor element embedded in the cavity and a conducting ring of non-metallic material is ,placed in the flanged aperture in said base, terminal tags on the reverse side of the base forming separate terminals, two terminal tags electrically connected to the respective ends of the moulded resistor and a third tag electrically connected to the non-metallic ring, said backing plate is placed on the re verse side of the base and the whol assembly is moulded into a single unit.
3. A method of forming a resistor element including a moulded backing plate with a central opening, an E-shaped terminal blank with turned up ends, a base having an interrupted cavity with a hole at each end and an annular recess with an incision therein, comprising the steps of placing the terminal blank on the reverse side of the base with the turned up ends of the outer limbs passing through the holes in the cavity and the turned up end of the centre limb entering the incision in the base, then placing th backing plate on the reverse side of the base, filling the 10 cavity with a powdered resistance material and a thermo-plastic binder, inserting a non-metallic conductive ring in the aperture in the base, applying heat and. pressure to the whole assembly and finally cropping the terminal blank into three separate terminal tags.
ERNEST ALFRED DE BELL.
No references cited.
US264492A 1951-02-05 1951-12-26 Potentiometer or resistor element Expired - Lifetime US2606985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2788/51A GB689001A (en) 1951-02-05 1951-02-05 Improvements in or relating to potentiometers or resistor elements

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US2606985A true US2606985A (en) 1952-08-12

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GB (1) GB689001A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738403A (en) * 1953-06-11 1956-03-13 Cutler Hammer Inc Rheostats
US2811621A (en) * 1954-05-06 1957-10-29 Clarostat Mfg Co Inc Control structure and method of forming the same
US2866876A (en) * 1954-03-16 1958-12-30 Arthur M Cohen Variable resistor
US2944329A (en) * 1955-07-11 1960-07-12 Illinois Tool Works Terminal clip structure
US3184696A (en) * 1962-03-26 1965-05-18 Cts Corp Variable resistor
US3227987A (en) * 1962-10-22 1966-01-04 Beckman Instruments Inc Trimmer potentiometer with end terminals
US3274669A (en) * 1961-12-11 1966-09-27 Beckman Instruments Inc Method of making electrical resistance element
US4172218A (en) * 1976-02-20 1979-10-23 Alps Electric Co., Ltd. Switch stator and method of manufacturing same
DE3609654A1 (en) * 1985-03-22 1986-09-25 Copal Electronics Co., Ltd., Tokio/Tokyo REGULAR RESISTANCE
US4839960A (en) * 1987-05-29 1989-06-20 Murata Manufacturing Co.,Ltd. Method of manufacturing circuit component such as stator for variable resistor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738403A (en) * 1953-06-11 1956-03-13 Cutler Hammer Inc Rheostats
US2866876A (en) * 1954-03-16 1958-12-30 Arthur M Cohen Variable resistor
US2811621A (en) * 1954-05-06 1957-10-29 Clarostat Mfg Co Inc Control structure and method of forming the same
US2944329A (en) * 1955-07-11 1960-07-12 Illinois Tool Works Terminal clip structure
US3274669A (en) * 1961-12-11 1966-09-27 Beckman Instruments Inc Method of making electrical resistance element
US3184696A (en) * 1962-03-26 1965-05-18 Cts Corp Variable resistor
US3227987A (en) * 1962-10-22 1966-01-04 Beckman Instruments Inc Trimmer potentiometer with end terminals
US4172218A (en) * 1976-02-20 1979-10-23 Alps Electric Co., Ltd. Switch stator and method of manufacturing same
DE3609654A1 (en) * 1985-03-22 1986-09-25 Copal Electronics Co., Ltd., Tokio/Tokyo REGULAR RESISTANCE
US4839960A (en) * 1987-05-29 1989-06-20 Murata Manufacturing Co.,Ltd. Method of manufacturing circuit component such as stator for variable resistor

Also Published As

Publication number Publication date
GB689001A (en) 1953-03-18

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