Patent US4408708A successfully refreshed from Google Patents.
US4408708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing prefabricated lagging components to a metal surface, and a prefabricated lagging component for use in the method
Assignee: ArcelorMittal Liege Upstream SA
•
Filing: 1981-04-09
•
Granted: 1983-10-11
•
Expires: 2001-04-09
Abstract
Abstract A method of securing a lagging component to a metal surface, comprising: positioning a prefabricated lagged component having one or more holes on the metal surface; inserting a securing element into each hole of the lagging component until its end touches the metal surface; welding the securing element to the surface using a welding gun; and filling the remaining hole cavity with a packing material around the securing element. The securing element is held in place prior to welding by a cardboard retainer.
Inventors
- 👤 Leon J. E. Delcour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:45
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
A method of securing a lagging component to a metal surface, comprising: positioning a prefabricated lagging component on the metal surface, said lagging component having one or more holes lined with a hollow sleeve having a base formed with an aperture, each hollow sleeve containing a securing element held by a cardboard washer having an aperture revealing part of the surface of the corresponding securing component; welding the securing element to the surface using a welding gun; and filling the remaining hole cavity with a packing material around the securing element.
Claim 2
Independent Claim
91 words
A method of securing a lagging component to a metal surface, comprising: positioning a prefabricated lagging component on the metal surface, said lagging component having one or more holes lined with a hollow sleeve having a base formed with an aperture, each hollow sleeve containing a securing element held by a cardboard washer having an aperture revealing part of the surface of the corresponding securing component; welding the securing element to the surface using a welding gun; and filling the remaining hole cavity with a packing material around the securing element.
Claim 3
Dependent Claim
49 words
A prefabricated lagging component formed with one or more holes each lined with an internal hollow sleeve having a base formed with an aperture, each hollow sleeve containing a securing element held by a cardboard washer having an aperture revealing part of the surface of the corresponding securing component.
Claim 4
Dependent Claim
49 words
A prefabricated lagging component formed with one or more holes each lined with an internal hollow sleeve having a base formed with an aperture, each hollow sleeve containing a securing element held by a cardboard washer having an aperture revealing part of the surface of the corresponding securing component.
Claim 5
Dependent Claim
29 words
A prefabricated lagging component according to claim 2, in which the surface of the lagging component adapted to face the metal surface is coated with an electrically insulating layer.
References Cited (Backward Citations)
US3486533A
Cited
US3702024A
Cited
US3624340A
Cited
US3848034A
Cited
US3909907A
Cited
US4032742A
Cited
US4070151A
Cited
US4170451A
Cited
US4120641A
Cited
US4222337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |