US3783320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamping means for mechanical securement of enclosures to bus duct
Assignee: ITE Imperial Corp
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Filing: 1972-12-15
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Granted: 1974-01-01
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Expires: 1992-12-15
Abstract
Abstract Each end of a bus duct plug is provided with a clamping assembly to mechanically secure the plug to a bus duct housing. Each clamping assembly includes a pair of pivoted L-shaped crank members having hooks at one end thereof and being joined at their other ends to a connecting member that is mounted for guided linear movement. A single adjusting screw in threaded engagement with the connecting member moves the latter, with such movement being effective to simultaneously pivot both crank members and thereby selectively move the hooks into and out of clamping engagement with the bus duct housing.
Inventors
- 👤 R Clement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:17
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06; H02G5/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
231 words
An electrical device adapted to be mounted to a bus duct; said device comprising a plurality of bus bar engaging fingers; a housing to which said fingers are secured; said housing having a front wall with an aperture through which said fingers extend forwardly of said front wall; said housing also having first and second end walls extending rearwardly from opposite first and second edges, respectively, of said front wall; mounting means for securing said device to a bus duct casing; said mounting means including a first portion disposed at said first end wall and including first and second crank members, first and second parallel and laterally offset pivots to which the respective first and second crank members are mounted, connecting means to which one end of each of said crank members is connected, a fixed support means, and an adjusting means extending between said support means and said connecting means whereby manipulation of said adjusting means is effective to simultaneously pivot said crank members in opposite directions; said first and second crank members at the other ends thereof having respective first and second duct casing engaging hook portions facing toward one another; manipulation of said adjusting means in a first direction moving said hook portions simultaneously toward one another in clamping directions, and when manipulated in a second direction moving said hook portions simultaneously away from one another releasing directions.
Claim 2
Dependent Claim
231 words
An electrical device adapted to be mounted to a bus duct; said device comprising a plurality of bus bar engaging fingers; a housing to which said fingers are secured; said housing having a front wall with an aperture through which said fingers extend forwardly of said front wall; said housing also having first and second end walls extending rearwardly from opposite first and second edges, respectively, of said front wall; mounting means for securing said device to a bus duct casing; said mounting means including a first portion disposed at said first end wall and including first and second crank members, first and second parallel and laterally offset pivots to which the respective first and second crank members are mounted, connecting means to which one end of each of said crank members is connected, a fixed support means, and an adjusting means extending between said support means and said connecting means whereby manipulation of said adjusting means is effective to simultaneously pivot said crank members in opposite directions; said first and second crank members at the other ends thereof having respective first and second duct casing engaging hook portions facing toward one another; manipulation of said adjusting means in a first direction moving said hook portions simultaneously toward one another in clamping directions, and when manipulated in a second direction moving said hook portions simultaneously away from one another releasing directions.
Claim 3
Dependent Claim
25 words
An electrical device as set forth in claim 1 in which means defining said pivots also secure said mounting means to said first end wall.
Claim 4
Dependent Claim
18 words
An electrical device as set forth in claim 1 in which the crank members are of identical construction.
Claim 5
Dependent Claim
32 words
An electrical device as set forth in claim 1 in which the mounting means includes a guide formation engaging said connecting means to guide movement thereof upon manipulation of said adjusting means.
Claim 6
Dependent Claim
39 words
An electrical device as set forth in claim 4 in which said guide formation is operatively shaped and disposed so that for all positions of said adjusting means said connecting means is equally spaced from both of said pivots.
Claim 7
Dependent Claim
27 words
An electrical device as set forth in claim 5 in which connections between said connecting means and said crank members include elongated slots in said crank members.
Claim 8
Dependent Claim
24 words
An electrical device as set forth in claim 1 in which the adjusting means comprises a single screw threadably engaged with the connecting member.
Claim 9
Dependent Claim
45 words
An electrical device as set forth in claim 1 in which the support means includes a first section abutting said first end wall and a second section generally at right angles to said first section; said adjusting means being in engagement with the first section.
Claim 10
Dependent Claim
25 words
An electrical device as set forth in claim 8 in which means defining said pivots also secure said mounting means to said first end wall.
Claim 11
Dependent Claim
41 words
An electrical device as set forth in claim 8 in which the mounting means includes a guide formation engaging said connecting means to guide movement thereof upon manipulation of said adjusting means; said guide formation being carried by said first section.
Claim 12
Dependent Claim
31 words
An electrical device as set forth in claim 1 in which said crank members are generally L-shaped and said pivots are disposed at the leg junctions of each of said members.
Claim 13
Dependent Claim
29 words
An electrical device as set forth in claim 11 in which said pivots comprise pin-like elements extending outward from said housing and through elongated clearance apertures in said members.
Claim 14
Dependent Claim
37 words
An electrical device as set forth in claim 11 in which each of said crank members is constructed with its hook portion and leg portion extending therefrom to its said pivot being formed by an unbent stamping.
Claim 15
Dependent Claim
25 words
An electrical device as set forth in claim 13 in which means defining said pivots also secure said mounting means to said first end wall.
Claim 16
Dependent Claim
55 words
An electrical device as set forth in claim 8 in which the adjusting means comprises a single screw threadably engaged with the connecting member; said screw extending through a clearance aperture in the second section with the head of said screw having movement thereof in a mounting means releasing direction limited by said second section.
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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |