US3453584A - Sliding contact unit for potentiometer - Google Patents

Sliding contact unit for potentiometer Download PDF

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Publication number
US3453584A
US3453584A US647661A US3453584DA US3453584A US 3453584 A US3453584 A US 3453584A US 647661 A US647661 A US 647661A US 3453584D A US3453584D A US 3453584DA US 3453584 A US3453584 A US 3453584A
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US
United States
Prior art keywords
frame
sliding contact
slide
potentiometer
contact unit
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
US647661A
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English (en)
Inventor
Earl A Hanson
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.)
Stackpole Carbon Co
Original Assignee
Stackpole Carbon Co
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
Application filed by Stackpole Carbon Co filed Critical Stackpole Carbon Co
Application granted granted Critical
Publication of US3453584A publication Critical patent/US3453584A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C10/00—Adjustable resistors
    • H01C10/30—Adjustable resistors the contact sliding along resistive element
    • H01C10/38—Adjustable resistors the contact sliding along resistive element the contact moving along a straight path
    • H01C10/40—Adjustable resistors the contact sliding along resistive element the contact moving along a straight path screw operated

Definitions

  • a sliding contact unit for use between parallel collector and resistor strips includes a slide provided at one side with means for moving it endwise, and an open frame projecting from the opposite side. Mounted in the frame is a wire coil that projects laterally from it to form a bridging contact.
  • FIG. 1 is a front view of a potentiometer
  • FIG. 2 is a side view thereof with part broken away;
  • FIG. 3 is an enlarged cross-section taken on line HL- III of FIG. 2.
  • the long rectangular housing 1 of a potentiometer may be formed from a molded plastic or other suitable rigid material.
  • the housing preferably is made from two molded half sections that have meeting edges extending from front to back across the end walls of the housing and lengthwise along its back or base. The half sections are joined together in any suitable manner, such as by adhesive for example.
  • the front or top of the housing is provided centrally with a slot2 extending of the housing for nearly its full length.
  • the slot has parallel sides.
  • a rectangular slide 3 Slidably mounted in the slot for movement lengthwise of the housing is a rectangular slide 3 that has laterally opening grooves 4 in its opposite sides receiving the side walls of slot 2 to hold and guide the slide.
  • the outer side of the slide is provided with a projection or knob 5 for moving the slide endwise back and forth along the slot.
  • a metal collector strip 7 and an electrical resistor strip 8 are mounted inside the housing at opposite sides thereof.
  • the collector strip is provided with an integral terminal 9 that extends through the back of the housing, while each end of the resistance strip is connected to a metal terminal 10 likewise extending through the back.
  • the slide is equipped withmeans for quickly attaching a bridging contact to it so that the assembly will form a sliding contact unit.
  • the frame is entirely inside of the potentiometer housing.
  • the plane of the frame extends lengthwise of the slide and is parallel to the collector and resistor strips.
  • the frame preferably is rectangular, with the inner side of the slide forming one side of the frame.
  • Disposed in this frame is a wire coil 13, the axis of which is perpendicular to the slide.
  • the coil is held in place by a pair of projections 14 integral with the frame and project-ing a short distance into the opposite ends of the coil.
  • the projections are integral with the frame and preferably are tapered toward each other as seen in FIG. 2 of the drawings to facilitate insertion of the spring in the frame.
  • the coil projects from the opposite sides of the frame and slidingly engages both the collector strip and the resistor strip, thereby forming a bridging contact between them.
  • the convolutions of the coil are spaced apart sufficiently to have permitted it to be compressed axially and inserted projections 14 and then released, whereupon it is expanded into engagement with the frame. This manner of attaching the coil to the slide in very simple and rapid, thereby reducing the cost of the potentiometer.
  • a sliding contact unit for use between parallel collector and resistor strips, said unit comprising a slide having ends and provided at one side with means for moving it endwise, an open frame projecting from the opposite side of the slide in a plane extending lengthwise of the slide, a straight wire coil disposed in the frame with its axis perpendicular to the slide, the coil projecting from opposite sides of the frame to form a bridging contact.
  • a sliding contact unit in which said frame is provided with means extending into the coil to help hold it in place.
  • a sliding contact -unit according to claim 1 in which the inside of the frame is provided with a pair of projections extending into the opposite ends of the coil.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Adjustable Resistors (AREA)
  • Details Of Resistors (AREA)
US647661A 1967-06-21 1967-06-21 Sliding contact unit for potentiometer Expired - Lifetime US3453584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64766167A 1967-06-21 1967-06-21

Publications (1)

Publication Number Publication Date
US3453584A true US3453584A (en) 1969-07-01

Family

ID=24597816

Family Applications (1)

Application Number Title Priority Date Filing Date
US647661A Expired - Lifetime US3453584A (en) 1967-06-21 1967-06-21 Sliding contact unit for potentiometer

Country Status (5)

Country Link
US (1) US3453584A (en:Method)
BE (1) BE716677A (en:Method)
FR (1) FR1571593A (en:Method)
GB (1) GB1184152A (en:Method)
NL (1) NL6807931A (en:Method)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3531753A (en) * 1969-03-17 1970-09-29 Bourns Inc Variable resistor contact device
US3531754A (en) * 1969-03-17 1970-09-29 Bourns Inc Potentiometer
US3550060A (en) * 1969-02-17 1970-12-22 Stackpole Carbon Co Potentiometer adjustable by slide or screw
US5818324A (en) * 1996-11-13 1998-10-06 Resistance Technology, Inc. Wire coil potentiometer wiper

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379047A (en) * 1942-05-01 1945-06-26 Bell Telephone Labor Inc Bridging conductor
US3233200A (en) * 1962-09-28 1966-02-01 Weston Instruments Inc Adjustable resistor
US3362004A (en) * 1966-03-30 1968-01-02 Stackpole Carbon Co Straight potentiometer with linear motion contact

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2379047A (en) * 1942-05-01 1945-06-26 Bell Telephone Labor Inc Bridging conductor
US3233200A (en) * 1962-09-28 1966-02-01 Weston Instruments Inc Adjustable resistor
US3362004A (en) * 1966-03-30 1968-01-02 Stackpole Carbon Co Straight potentiometer with linear motion contact

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550060A (en) * 1969-02-17 1970-12-22 Stackpole Carbon Co Potentiometer adjustable by slide or screw
US3531753A (en) * 1969-03-17 1970-09-29 Bourns Inc Variable resistor contact device
US3531754A (en) * 1969-03-17 1970-09-29 Bourns Inc Potentiometer
US5818324A (en) * 1996-11-13 1998-10-06 Resistance Technology, Inc. Wire coil potentiometer wiper

Also Published As

Publication number Publication date
BE716677A (en:Method) 1968-12-02
GB1184152A (en) 1970-03-11
FR1571593A (en:Method) 1969-06-20
NL6807931A (en:Method) 1968-12-23

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