Patent US4883918A successfully refreshed from Google Patents.
US4883918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer mounting pad having a cable opening lined with a safety barrier
Assignee: Formex Manufacturing Inc
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Filing: 1989-04-20
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Granted: 1989-11-28
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Expires: 2009-04-20
Abstract
Abstract A detachable safety frame is constructed from four individual members which are assembled into a rectangular frame detachably attached at each respective adjacent and adjoining end. The frame is assembled into either existing cable openings of installed transformer and mounting pad installations or may be incorporated into new installations during the installation of the transformer on the mounting pad. In the version used for new installation, the individual frame members are of such size as to extend downwardly into the hole in the ground which is dug for the cables. Each end of each member is provided with a projecting tab and slot for engagement and disengagement to assemble or disassemble the frame.
Inventors
- 👤 Robert L. Browning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:49
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/06; H02; H02B; H02B7/00; H02B7/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
76 words
A transformer mounting pad having a cable opening extending therethrough and a safety wall system installed in the cable opening, said safety wall system comprising a frame positioned in said cable opening and extending from above said opening through the opening along the sides thereof, said frame comprising four detachable and removable individual wall members detachably attached together at respective adjacent ends, and attaching means on each of said wall members detachably attaching said members together.
Claim 2
Dependent Claim
76 words
A transformer mounting pad having a cable opening extending therethrough and a safety wall system installed in the cable opening, said safety wall system comprising a frame positioned in said cable opening and extending from above said opening through the opening along the sides thereof, said frame comprising four detachable and removable individual wall members detachably attached together at respective adjacent ends, and attaching means on each of said wall members detachably attaching said members together.
Claim 3
Dependent Claim
22 words
The assembly claimed in claim 1, wherein: said attaching means comprises a slot on each end of each of said wall members.
Claim 4
Dependent Claim
20 words
The assembly claimed in claim 2, wherein: each wall member has a tab on each end thereof adjacent said slot.
Claim 5
Dependent Claim
37 words
The assembly claimed in claim 3, wherein: each wall member has a top and a bottom and the tabs on the top and bottom of two opposite wall members project in the same direction towards the bottom.
Claim 6
Dependent Claim
26 words
The assembly claimed in claim 1, wherein: said wall members extend into said cable opening below the level of the bottom surface of the mounting pad.
Claim 7
Dependent Claim
19 words
The assembly claimed in claim 5 wherein: each end of each wall member has an intermediate tab projecting therefrom.
Claim 8
Dependent Claim
24 words
The assembly claimed in claim 1, wherein: there are respective support members extending from each of said wall members beneath said transformer mounting pad.
Claim 9
Dependent Claim
23 words
The assembly claimed in claim 1, wherein: there is an intermediate member detachably positioned between the ends of two opposite said wall members.
Claim 10
Dependent Claim
37 words
The assembly claimed in claim 8, wherein: said intermediate member has a tab and a slot on each end and there are slots in said two opposite wall members to receive said slots on said intermediate member.
References Cited (Backward Citations)
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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) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |