Patent US3731018A successfully refreshed from Google Patents.
US3731018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disconnecting switch operating linkage
Assignee: Westinghouse Electric Corp
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Filing: 1972-06-12
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Granted: 1973-05-01
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Expires: 1992-06-12
Abstract
Abstract A switch structure characterized by a plurality of spaced switch units and interconnected by movable tie rods including adjustable connecting means between each unit and a corresponding tie rod which connecting means includes a clevis and a clamping portion comprising a plurality of spaced slots forming slotted sections movable between contracted and expanded positions, which sections include a serrated peripheral surface adapted for seizing the inner surface of the tie rods.
Inventors
- 👤 R Spisak
- 👤 R Becker
- 👤 W Mckeithan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:58
CPC Classifications
H; H01; H01H; H01H31/00; H01H31/26; H01H31/28; H01H31/30; H01H33/00; H01H33/02; H01H33/42; H01H2033/426
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
A switch structure comprising a supporting frame, a plurality of spaced switch units mounted on the frame, each switch unit having a movable lever for operating the switch unit between open and closed positions, means including tie rods for interconnecting the levers of adjacent switch units, common drive means for the switch units and operatively connected to the lever of one of the switch units, adjustable connecting means between each lever and corresponding tie rod and comprising a pivotal portion connected to a lever and a clamping portion attached to a tie rod, and the clamping portion comprising an expandable insert movable radially between collapsed and expanded gripping relationships with the inner surface of the tie rod.
Claim 2
Dependent Claim
117 words
A switch structure comprising a supporting frame, a plurality of spaced switch units mounted on the frame, each switch unit having a movable lever for operating the switch unit between open and closed positions, means including tie rods for interconnecting the levers of adjacent switch units, common drive means for the switch units and operatively connected to the lever of one of the switch units, adjustable connecting means between each lever and corresponding tie rod and comprising a pivotal portion connected to a lever and a clamping portion attached to a tie rod, and the clamping portion comprising an expandable insert movable radially between collapsed and expanded gripping relationships with the inner surface of the tie rod.
Claim 3
Dependent Claim
30 words
The switch structure of claim 1 in which the expandable insert includes surface means for seizing the inner surface of the tie rod when the expandable part is radially expanded.
Claim 4
Dependent Claim
22 words
The switch structure of claim 2 in which the adjustable connecting means also comprises a locking stud cooperative with the expandable insert.
Claim 5
Dependent Claim
29 words
The switch structure of claim 3 in which the clamping portion includes a threaded bore, and in which the locking stud is in threaded engagement with the threaded bore.
Claim 6
Dependent Claim
48 words
The switch structure of claim 4 in which the pivotal portion comprises a clevis and the expandable insert comprises a plurality of spaced slots forming slotted sections, and an inner conical surface, and in which the locking stud includes a tapered surface engageable with the inner conical surface.
Claim 7
Dependent Claim
29 words
The switch structure of claim 5 in which each slotted section includes a peripheral surface having spaced pointed edges adapted for seizing the inner surface of the tie rod.
Claim 8
Dependent Claim
18 words
The switch structure of claim 5 in which each slotted section includes a plurality of outwardly extending points.
Claim 9
Dependent Claim
16 words
The switch structure of claim 5 in which each slotted section includes a serrated peripheral surface.
References Cited (Backward Citations)
US3140367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |