US3576513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slider assembly for lead screw actuated potentiometer
Assignee: Electra Midland Corp
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Filing: 1969-09-10
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Granted: 1971-04-27
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Expires: 1989-09-10
Abstract
Abstract A slider for a miniaturized potentiometer having a plastic body in the form of half nut for engaging the lead screw and in which the contact member is of ''''sled'''' shape with a reversely bent wiper portion and pointed runner or side portions, which side portions are accommodated in recesses formed in the sides of the body and held in place by reason of an interference fit with the points digging into the body of the slider.
Inventors
- 👤 Victor G Mathison
- 👤 Charles W Yunblut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/38; H01C10/40
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
174 words
In a lead screw actuated potentiometer having a lead screw with a resistance element arranged parallel thereto, a slider body of generally rectangular shape having a trough-shaped recess formed in its upper side in engagement with the lead screw, a contact member of sled shape having side runner portions and an integral reversely bent wiper slideably engaging the resistance element, means defining recesses formed on the respective sides of the slider body receiving the side portions of the contact member, the contact member being seated straddlingly on the body, the recess defining means including shoulders at the ends of the recesses, the slider body being formed of relatively soft plastic material, and the side portions of the contact member being pointed at the ends and in retentive engagement with the shoulders, the contact member being pressed into seated position, the points at one of the ends of the side members having an adjacent angled surface to facilitate entry by rocking the contact member about the other end thereof into seated position incident to assembly.
Claim 2
Dependent Claim
174 words
In a lead screw actuated potentiometer having a lead screw with a resistance element arranged parallel thereto, a slider body of generally rectangular shape having a trough-shaped recess formed in its upper side in engagement with the lead screw, a contact member of sled shape having side runner portions and an integral reversely bent wiper slideably engaging the resistance element, means defining recesses formed on the respective sides of the slider body receiving the side portions of the contact member, the contact member being seated straddlingly on the body, the recess defining means including shoulders at the ends of the recesses, the slider body being formed of relatively soft plastic material, and the side portions of the contact member being pointed at the ends and in retentive engagement with the shoulders, the contact member being pressed into seated position, the points at one of the ends of the side members having an adjacent angled surface to facilitate entry by rocking the contact member about the other end thereof into seated position incident to assembly.
Claim 3
Dependent Claim
40 words
The combination as claimed in claim 1 in which the points at the ends of the side members are angled in respectively opposite directions to facilitate rocking the contact member about one end thereof into seated position incident to assembly.
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |