Patent US4524903A successfully refreshed from Google Patents.
Patent US3676826A successfully refreshed from Google Patents.
US3676826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide potentiometer
Assignee: AB Electronic Components Ltd
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Filing: 1971-10-20
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Granted: 1972-07-11
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Expires: 1991-10-20
Abstract
Abstract A pair of substantially identical body halves are jointed face to face to leave a slot in one surface for a slider. One or both body halves have a resistive track and a collector track including a center terminal. The slider has sliding contacts to connect the resistive track and collector track. A dust shield is mounted so as to be stationary in the body to prevent ingress of dust through the slot. The slider has cooperating body parts on either side of the dust shield so as to be slidable without moving the dust shield.
Inventors
- 👤 Henry Gazeley Howitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:57
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/44
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
In a slide potentiometer comprising a body consisting of a pair of substantially identical body halves, each body half having a recess cooperating with the corresponding recess in the other body half to form a longitudinal slot, a slider projecting from the body through the said slot, at least one of the said body halves housing a resistive track and a collector track, the said collector track having a terminal, sliding contacts on slider for electrically connecting the resistive track to the collector track, and a dust shield for preventing ingress of dust through the said slot, the improvement that the duct shield is mounted to be stationary in the body and that the slide comprises cooperating body parts located on each side of the dust shield to define a through way whereby tHe slides may be moved along the slot without disturbing the dust shield.
Claim 2
Dependent Claim
146 words
In a slide potentiometer comprising a body consisting of a pair of substantially identical body halves, each body half having a recess cooperating with the corresponding recess in the other body half to form a longitudinal slot, a slider projecting from the body through the said slot, at least one of the said body halves housing a resistive track and a collector track, the said collector track having a terminal, sliding contacts on slider for electrically connecting the resistive track to the collector track, and a dust shield for preventing ingress of dust through the said slot, the improvement that the duct shield is mounted to be stationary in the body and that the slide comprises cooperating body parts located on each side of the dust shield to define a through way whereby tHe slides may be moved along the slot without disturbing the dust shield.
Claim 3
Dependent Claim
47 words
A slide potentiometer as set forth in claim 1, in which the body portions are joined by cooperating formations including a pin and hole connection near the mid point of the body, the hole being of stepped bore to provide ease of locations and a firm fit.
Claim 4
Dependent Claim
34 words
A slide potentiometer as set forth in claim 2, in which the bore of the hole is provided with a plurality of flatted areas from above half depth to the bottom of the hole.
Claim 5
Dependent Claim
40 words
A slide potentiometer as set forth in claim 1, comprising unitary ribs in the body half to define a recess for the collector track, the said ribs being formed with snap retention pips for holding the collector track in position.
Claim 6
Dependent Claim
53 words
A slide potentiometer as set forth in claim 1, comprising formations defining a recess for the resistor track, locating pins for securing the ends of the resistor track and snap retention means on at least one of the said formations intermediate the ends of the recess for retaining the resistive track in position.
Claim 7
Dependent Claim
42 words
A slide potentiometer as set forth in claim 1, in which at least one of said body halves has a plurality of spaced recesses for accommodating the center terminal of the collector track at any one of a plurality of spaced positions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |