US3689128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cabinet unit employing a frame which can be moved out of a stationary frame
Assignee: AT&T Inc
•
Filing: 1971-04-21
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Granted: 1972-09-05
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Expires: 1991-04-21
Abstract
Abstract The cabinet unit comprises a movable frame that nests within a stationary frame comprising a head plate and a base plate extending forwardly from an upright plate. A door is pivotally secured to the forward end of the base plate so as to be movable between an upright and a prone position, and the door, the head plate, and the base plate all include means for guiding the displacement of the movable frame. In the upright position, the door serves to partially enclose the movable frame, and in the prone position, the door lies in the same plane as the base plate and serves as a platform onto which the movable frame is displaceable. Carriers for banks of electrical components are mounted on the movable frame, and with the movable frame positioned on the door, the entire perimeter of the frame is accessible for installation and service of the components supported by the carriers.
Inventors
- 👤 John Andreini
- 👤 Edwin Harley Borchard
- 👤 Karl-Heinz Pohl
- 👤 Joseph Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:39
CPC Classifications
A; A47; A47B; A47B49/00; A47B49/004; H; H05; H05K; H05K7/00; H05K7/18
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
152 words
A cabinet for housing electrical equipment comprising: a stationary frame including an upright plate and a head plate and base plate extending forwardly from the upright plate; a movable frame to which the equipment to be housed within the cabinet is mounted, the movable frame being of a size to nest within the stationary frame; and a door pivotally mounted to the forward end of the base plate of the stationary frame, the door being movable between an upright position where it extends parallel to the upright plate and serves to enclose the movable frame and a prone position wherein it lies in the same plane as the base plate and serves as a platform onto which the movable frame is displaceable when access to the equipment mounted on the movable frame is desired, the head plate, base plate and door including guide means for directing the displacement of the movable frame.
Claim 2
Dependent Claim
152 words
A cabinet for housing electrical equipment comprising: a stationary frame including an upright plate and a head plate and base plate extending forwardly from the upright plate; a movable frame to which the equipment to be housed within the cabinet is mounted, the movable frame being of a size to nest within the stationary frame; and a door pivotally mounted to the forward end of the base plate of the stationary frame, the door being movable between an upright position where it extends parallel to the upright plate and serves to enclose the movable frame and a prone position wherein it lies in the same plane as the base plate and serves as a platform onto which the movable frame is displaceable when access to the equipment mounted on the movable frame is desired, the head plate, base plate and door including guide means for directing the displacement of the movable frame.
Claim 3
Dependent Claim
80 words
A cabinet structure as in claim 1 wherein the base plate and the door include side ledges that are aligned when the door is in its prone position, and the movable frame has wheels that roll on the side ledges to facilitate displacement and a kickplate that is displaced by the movement of the door to its prone position so as to permit the ledges of the door to move into close proximity with the ledges of the base plate.
Claim 4
Dependent Claim
56 words
A cabinet structure as in claim 1 wherein the guide means of the base plate and door comprise center rails, the center rail of the door being aligned with the center rail of the base plate when the door is in the prone position, and the movable frame includes guide means for embracing the center rails.
Claim 5
Dependent Claim
46 words
A cabinet structure as in claim 1 further including slidable means for coupling the guide means of the head plate of the stationary frame to the movable frame so as to prevent the movable frame from being tipped over when it is positioned on the door.
Claim 6
Dependent Claim
52 words
A cabinet structure as in claim 4 wherein the movable frame includes a top plate, the guide means of the head plate comprises a center rail, and the coupling means includes means for embracing and being displaceable along the center rail of the head plate and the sides of the top plate.
Claim 7
Dependent Claim
64 words
A cabinet structure as in claim 1 wherein each side of the base plate and the door includes a multiplicity of spaced tabs, the tabs of one side extending toward the tabs of the other side, and the movable frame includes a bottom plate having flanges that extend beneath the tabs, the space between adjacent tabs being less than the width of the flanges.
Claim 8
Dependent Claim
35 words
A cabinet structure as in claim 1 further including means for latching the door in its upright position and counterbalancing springs for facilitating the movement of the door between the upright and the prone positions.
Claim 9
Dependent Claim
54 words
A cabinet structure as in claim 1 wherein the door includes legs pivotally attached to the sides thereof, the legs when folded back being generally flush with the front of the door and the legs when extended supporting the door the same distance off of a floor as the height of the standard pallet.
Claim 10
Dependent Claim
23 words
A cabinet structure as in claim 8 further including an interlock to prevent the door from being lowered without first extending the legs.
Claim 11
Dependent Claim
31 words
A cabinet structure as in claim 1 further including a pair of hinged receptacles for modular circuit packages, the hinged receptacles being pivotally mounted back to back to the movable frame.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |