US3792413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting plug for an electric current supply rail
Assignee: Nokia Oyj
•
Filing: 1972-09-01
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Granted: 1974-02-12
•
Expires: 1992-09-01
Abstract
Abstract A connecting plug for an electric current supply rail, comprising a casing and contact fingers flexibly fastened in said casing. An operating device preferably in the shape of a plate is arranged in the casing and is slidingly displaceable along said contact fingers between an inoperative position where the contact fingers are withdrawn into the casing and an operative position where the contact fingers are pushed out to protrude from said casing.
Inventors
- 👤 M Hyrlainen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:47
CPC Classifications
H; H01; H01R; H01R25/00; H01R25/14; H01R25/142
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
200 words
An electrical connecting plug comprising, in combination, a support rail open along one side; a plurality of longitudinal conductors in said support rail; a casing having a base member; contact fingers having arms fixed to said base member; a movable operating member having an element within said casing and displaceable rectilinearly along the longitudinal axes of said arms of said fingers, said operating member having at least one support surface for each finger, said arms of said fingers being arranged so that the spacings between fingers located opposite to each other vary along their length between the point at which said arms of said fingers are secured to said base member and the ends of said fingers, when said fingers are in a retracted position within said body, said fingers being movable by said operating member into an extended position outside of said casing for contacting said conductors, the displacement of said operating member along said arms applying pressure against said arms by said support surface to force the ends of opposite pairs of fingers away from each other and toward each other when said fingers are displaced between retracted and extended positions by corresponding displacement of said operating member.
Claim 2
Dependent Claim
200 words
An electrical connecting plug comprising, in combination, a support rail open along one side; a plurality of longitudinal conductors in said support rail; a casing having a base member; contact fingers having arms fixed to said base member; a movable operating member having an element within said casing and displaceable rectilinearly along the longitudinal axes of said arms of said fingers, said operating member having at least one support surface for each finger, said arms of said fingers being arranged so that the spacings between fingers located opposite to each other vary along their length between the point at which said arms of said fingers are secured to said base member and the ends of said fingers, when said fingers are in a retracted position within said body, said fingers being movable by said operating member into an extended position outside of said casing for contacting said conductors, the displacement of said operating member along said arms applying pressure against said arms by said support surface to force the ends of opposite pairs of fingers away from each other and toward each other when said fingers are displaced between retracted and extended positions by corresponding displacement of said operating member.
Claim 3
Dependent Claim
44 words
An electrical connecting plug as defined in claim 1, wherein said movable operating member has a disc-shaped slide with notches providing at least one supporting surface for each of said figures and allowing said slide to move slidingly along said arms of said fingers.
Claim 4
Dependent Claim
55 words
An electrical connecting plug as defined in claim 2, wherein the supporting surfaces of said slide are arranged so that when said slide is moved towards the ends of said fingers some of said supporting surfaces force the corresponding fingers toward each other while other supporting surfaces force the corresponding fingers away from each other.
References Cited (Backward Citations)
US3718886A
Cited
US3688240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |