US4168726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal boot apparatus
Assignee: SCOTT INSULATION CO Inc
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Filing: 1977-05-25
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Granted: 1979-09-25
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Expires: 1997-05-25
Abstract
Abstract A thermal boot apparatus for enclosing a test port and cap for a power house precipitator comprising an inner and an outer stainless steel mesh sleeve each having one end enclosed, a layer of insulating material sandwiched between the inner and outer sleeves, and a mastic coating on the outer surface of the outer sleeve and end. Also included is the combination of a test port for a power house precipitator, a removable cap on the end of the test port and the thermal boot apparatus with a stainless steel band including a sealing clip encircling the coated outer sleeve to secure the thermal boot over the test port and cap.
Inventors
- 👤 William R. Klennert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:48
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
The combination comprising: (a) power house precipitator means including a test port; (b) a removable cap on the end of said test port; and (c) a thermal boot apparatus enclosing said test port and said cap, said thermal boot apparatus including: (i) an inner mesh sleeve of stainless steel having one closed end and defining a compartment adapted to fit over the neck of a test port; (ii) an outer mesh sleeve of stainless steel having one closed end, said inner sleeve being positioned inside said outer sleeve; (iii) a layer of insulating material positioned between said inner and said outer sleeves and between the ends thereof; and (iiii) a mastic coating on the outer surface of said outer sleeve and end.
Claim 2
Dependent Claim
122 words
The combination comprising: (a) power house precipitator means including a test port; (b) a removable cap on the end of said test port; and (c) a thermal boot apparatus enclosing said test port and said cap, said thermal boot apparatus including: (i) an inner mesh sleeve of stainless steel having one closed end and defining a compartment adapted to fit over the neck of a test port; (ii) an outer mesh sleeve of stainless steel having one closed end, said inner sleeve being positioned inside said outer sleeve; (iii) a layer of insulating material positioned between said inner and said outer sleeves and between the ends thereof; and (iiii) a mastic coating on the outer surface of said outer sleeve and end.
Claim 3
Dependent Claim
15 words
The combination of claim 1 wherein said mastic coating is composed of vinyl acrylic mastic.
Claim 4
Dependent Claim
38 words
The combination of claim 1 additionally comprising means, including a stainless steel adjustable band with a sealing clip encircling said coated outer sleeve opposite the closed end thereof, for securing said thermal boot apparatus to said test port.
Claim 5
Dependent Claim
32 words
The combination of claim 3 wherein said layer of insulating material is a glass fiber blanket about at least one inch thick and suitable for temperatures of about at least 1200° F.
References Cited (Backward Citations)
US3350823A
Cited
US1818345A
Cited
GB757447A
Cited
US2942625A
Cited
US3085612A
Cited
US3413180A
Cited
US3589971A
Cited
DE1952490A1
Cited
US3906129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |