US3974599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underground reinforced plastic enclosure
Assignee: Lone Star Industries Inc
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Filing: 1975-03-20
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Granted: 1976-08-17
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Expires: 1995-03-20
Abstract
Abstract An underground reinforced plastic enclosure comprising a vertically and circumferentially stiffened body. The body is made of a fiberglass polyester resin and the stiffeners are of a reinforced plastic mortar. The body is suitable for surrounding a transformer or an oil switch used in underground utilities. On the body is seated a top cap made of reinforced plastic mortar. The top cap is formed with a central opening. Seated on the top cap is a reinforced plastic mortar cover plate or a metal grate. Depending from the top cap is a fiberglass polyester resin baffle and tamper shield. The body seats on a base of reinforced plastic mortar. A grade adjustment skirt also depends from the top cap outwardly from the baffle and tamper shield.
Inventors
- 👤 James L. Grosh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:45
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; E02D29/124; E02D29/121; E02D29/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
An enclosure for underground installations comprising: a body of fiberglass material; stiffeners on said body for rigidifying said body, said stiffeners being of reinforced plastic mortar; and a top cap on said body of reinforced plastic mortar, said top cap being formed with a central opening communicating with said body, said top cap being formed with radially disposed grooves projecting radially from said central opening and comprising a baffle and a tamper shield having radially disposed arms seated in said grooves for supporting said baffle and said tamper shield from said top cap.
Claim 2
Dependent Claim
93 words
An enclosure for underground installations comprising: a body of fiberglass material; stiffeners on said body for rigidifying said body, said stiffeners being of reinforced plastic mortar; and a top cap on said body of reinforced plastic mortar, said top cap being formed with a central opening communicating with said body, said top cap being formed with radially disposed grooves projecting radially from said central opening and comprising a baffle and a tamper shield having radially disposed arms seated in said grooves for supporting said baffle and said tamper shield from said top cap.
Claim 3
Dependent Claim
51 words
An enclosure as claimed in claim 1 wherein said baffle and tamper shield comprise an outer tubular member supported by said arms, a central disc supported by said arms in spaced relation to said tubular member and an apron supported by said central disc in spaced relation to said tubular member.
Claim 4
Dependent Claim
18 words
An enclosure as claimed in claim 1 wherein said baffle and tamper shield is made of fiberglass material.
Claim 5
Dependent Claim
26 words
An enclosure as claimed in claim 1 and comprising a grade adjustment skirt fixed to said top cap and depending therefrom radially outward from said body.
Claim 6
Dependent Claim
18 words
An enclosure as claimed in claim 4 wherein said grade adjustment skirt is made of reinforced plastic mortar.
Claim 7
Dependent Claim
18 words
An enclosure as claimed in claim 5 wherein said baffle and tamper shield is made of fiberglass material.
Claim 8
Dependent Claim
109 words
A top cap for underground installations comprising: a body formed with a central opening, said body being recessed outwardly from said opening; and a baffle and tamper shield, said baffle and tamper shield comprising a center base, means fixed to said center base and seated in said recesses of said body to support said center base within said central opening of said body, an inverted disc member disposed in said opening and depending from said base, said base and said inverted disc member forming a tamper shield, and a tubular baffle disposed in said opening and depending from said means outwardly and in spaced relation with said tamper shield.
Claim 9
Dependent Claim
109 words
A top cap for underground installations comprising: a body formed with a central opening, said body being recessed outwardly from said opening; and a baffle and tamper shield, said baffle and tamper shield comprising a center base, means fixed to said center base and seated in said recesses of said body to support said center base within said central opening of said body, an inverted disc member disposed in said opening and depending from said base, said base and said inverted disc member forming a tamper shield, and a tubular baffle disposed in said opening and depending from said means outwardly and in spaced relation with said tamper shield.
Claim 10
Dependent Claim
25 words
A top cap as claimed in claim 7 and comprising a grade adjustment skirt fixed to said body and depending therefrom outwardly of said opening.
Claim 11
Dependent Claim
16 words
A top cap as claimed in claim 8 wherein said body is of reinforced plastic mortar.
Claim 12
Dependent Claim
18 words
A top cap as claimed in claim 9 wherein said baffle and tamper shield is of fiberglass material.
Claim 13
Dependent Claim
18 words
A top cap as claimed in claim 9 wherein said grade adjustment skirt is of reinforced plastic mortar.
References Cited (Backward Citations)
US1258839A
Cited
US2857932A
Cited
US3150032A
Cited
US3150792A
Cited
US3390225A
Cited
US3516541A
Cited
US3672103A
Cited
US3837989A
Cited
US3717963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |