Patent US3781167A successfully refreshed from Google Patents.
US3781167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
No-weld refractory covering for water cooled pipes
Assignee: Premier Refractories and Chemicals Inc
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Filing: 1972-11-29
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Granted: 1973-12-25
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Expires: 1992-11-29
Abstract
Abstract An insulating jacket for water cooled pipes which can be quickly and easily installed.
Inventors
- 👤 G Ahonen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:38
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/024
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
197 words
A reinforced insulating jacket for a pipe, including a first semi-cylindrical ceramic member, a second semi-cylindrical ceramic member, a plurality of metallic members embedded in each of said first and second ceramic members, each of the metallic members having a portion which is exposed on the inner surfaces of the first and second ceramic members, a first semi-cylindrical metallic band secured to some of the metallic members and positioned on the inner surface of the first ceramic member, a second coacting semi-cylindrical metallic band secured to some of the metallic members and positioned on the inner surface of the second ceramic member, the first and second ceramic members each having longitudinal grooves extending along their inner edges on both sides, the first and second metallic bands each having interlocking means near both ends, which interlocking means are adjacent the grooves in the ceramic members, the interlocking means in the metallic bands being so positioned that when the first and second ceramic members are positioned around a supporting pipe the interlocking means in the metallic bands engage each other, interlocking the first and second ceramic members around the supporting pipe to thereby form a cylindrical insulating jacket therefor.
Claim 2
Dependent Claim
197 words
A reinforced insulating jacket for a pipe, including a first semi-cylindrical ceramic member, a second semi-cylindrical ceramic member, a plurality of metallic members embedded in each of said first and second ceramic members, each of the metallic members having a portion which is exposed on the inner surfaces of the first and second ceramic members, a first semi-cylindrical metallic band secured to some of the metallic members and positioned on the inner surface of the first ceramic member, a second coacting semi-cylindrical metallic band secured to some of the metallic members and positioned on the inner surface of the second ceramic member, the first and second ceramic members each having longitudinal grooves extending along their inner edges on both sides, the first and second metallic bands each having interlocking means near both ends, which interlocking means are adjacent the grooves in the ceramic members, the interlocking means in the metallic bands being so positioned that when the first and second ceramic members are positioned around a supporting pipe the interlocking means in the metallic bands engage each other, interlocking the first and second ceramic members around the supporting pipe to thereby form a cylindrical insulating jacket therefor.
Claim 3
Dependent Claim
36 words
The reinforced insulating jacket of claim 1, wherein the plurality of metallic members are V-shaped, with the bottom portion of the V-shaped members being exposed on the inner surfaces of the first and second ceramic members.
Claim 4
Dependent Claim
22 words
The reinforced insulating jacket of claim 2, wherein the first and second metallic bands are secured to the metallic members by welding.
Claim 5
Dependent Claim
35 words
The reinforced insulating jacket of claim 2, wherein there are a plurality of coacting semi-cylindrical metallic bands similar to said first and second metallic bands, secured to each of said first and second ceramic members.
Claim 6
Dependent Claim
57 words
The reinforced insulating jacket of claim 2, wherein the interlocking means of the metallic bands are slots, which slots can be intermesheD by initially positioning the first and second ceramic members on opposite sides of a pipe in a longitudinally offset position, and sliding the ceramic members longitudinally towards each other to cause the slots to intermesh.
Claim 7
Dependent Claim
33 words
The reinforced insulating jacket of claim 2, wherein the mouths of the slots are enlarged, to make for ease of engagement when the first and second ceramic members are slid towards each other.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |