US3686614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting plug for a current supply rail
Assignee: Nokia Oyj
•
Filing: 1971-02-01
•
Granted: 1972-08-22
•
Expires: 1991-02-01
Abstract
Abstract A connecting plug for a current supply rail, provided with contact fingers mounted in the plug pivotably around fixed shafts perpendicular to the conductors of the supply rail. The plug is further provided with a separate rotable operating shaft extending in parallel with said pivot shafts of the contact fingers and actuating said contact fingers selectively between a contact position and an inoperative position upon rotation of the operating shaft.
Inventors
- 👤 Kauko Kalervo Hyrylainen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:12
CPC Classifications
H; H01; H01R; H01R25/00; H01R25/14; H01R25/142
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A connecting plug for a current supply rail arrangement comprising a channel shaped rail and longitudinally extending conductors provided in the rail, said connecting plug consisting of a casing, contact fingers displaceably mounted in the casing and operating means engaging said contact fingers for displacement of the contact fingers between a position retracted inside the casing and a position protruding from the casing to make contact, with said conductors, characterized in that the contact fingers are pivotably mounted in the casing on shafts extending perpendicularly with respect to the longitudinal direction of the conductors, and that the operating means consists of a separate cam shaft rotatably mounted in the casing in sliding engagement with the contact fingers and extending in parallel with said shafts for the contact fingers.
Claim 2
Dependent Claim
128 words
A connecting plug for a current supply rail arrangement comprising a channel shaped rail and longitudinally extending conductors provided in the rail, said connecting plug consisting of a casing, contact fingers displaceably mounted in the casing and operating means engaging said contact fingers for displacement of the contact fingers between a position retracted inside the casing and a position protruding from the casing to make contact, with said conductors, characterized in that the contact fingers are pivotably mounted in the casing on shafts extending perpendicularly with respect to the longitudinal direction of the conductors, and that the operating means consists of a separate cam shaft rotatably mounted in the casing in sliding engagement with the contact fingers and extending in parallel with said shafts for the contact fingers.
Claim 3
Dependent Claim
66 words
A connecting plug according to claim 1 provided with fastening device for locking the casing in the current supply rail in a fully inserted position, characterized in that the fastening device consists of a U-shaped locking spring and that the cam shaft is provided with an eccentric which upon rotation of said shaft forces the arms of the locking spring outwards into engagement with the rail.
Claim 4
Dependent Claim
86 words
A connecting plug according to claim 1 provided with a fastening device for locking the casing in the current supply rail a fully inserted position, characterized in that the fastening device consists of a U-shaped locking spring which is mounted on the cam shaft slidably in the longitudinal direction of said shaft and that the cam shaft is provided with a cylindrical part which forces the arms of the locking spring outwards into engagement with the rail when the locking spring slides along the cam shaft.
Claim 5
Dependent Claim
109 words
A connecting plug according to claim 2 characterized in that the locking spring is mounted on the cam shaft slidably in the longitudinal direction thereof against the action of a spring and that the cam shaft is provided with a locking device which, when the locking spring is in its initial position on the cam shaft, is unrotatably engaged with the locking spring, and when the locking spring is diSplaced from said initial position on the shaft, is turnable with respect to the locking spring to a position in which the locking device prevents the locking spring from returning under the action of the spring to said initial position.
Claim 6
Dependent Claim
44 words
A connecting plug according to claim 4, characterized in that the locking device on the cam shaft is formed by a projecting cam and that the locking spring is provided with a corresponding notch with which the projecting cam engages in said initial position.
Claim 7
Dependent Claim
35 words
A connecting plug according to any of claim 1, characterized in that the cam shaft is provided for each contact finger with at least one tooth which engages a corresponding notch in the contact finger.
Claim 8
Dependent Claim
72 words
A connecting plug according to any of the proceeding claims, characterized in that the contact finger consists of a disc like plate forming a curved contact surface which is so shaped and located with respect to a corresponding conductor in the current supply rail, that the contact surface is forced in a wedge-like manner against the conductor when the disc is pivoted to a position in which it projects from the casing.
Claim 9
Dependent Claim
110 words
A connecting plug according to claim 3, characterized in that the locking spring is mounted on the cam shaft slidably in the longitudinal direction thereof against the action of a spring and that the cam shaft is provided with a locking device which, when the locking spring is in its initial position on the the cam shaft, is unrotatably engaged with the locking spring, and when the locking spring is displaced from said initial position on the shaft, is turnable with respect to the locking spring to a position in which the locking device prevents the locking spring from returning under the action of the spring to said initial position.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |