US4333973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating machine and process
Assignee: Chicago Bridge and Iron Co
•
Filing: 1980-08-07
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Granted: 1982-06-08
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Expires: 2000-08-07
Abstract
Abstract Apparatus and method for depositing a bed of polymeric insulating foam on a horizontal or sloped surface. The apparatus rolls on the surface being insulated and while it moves forward, lateral bands of insulating foam are sequentially and rapidly deposited by spraying a foamable liquid from a nozzle mounted on a carriage reciprocally moving on a track on the apparatus.
Inventors
- 👤 Francis V. Bellafiore
- 👤 Michael P. Duff
- 👤 David M. O'Meara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:26
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/02; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/06; E; E04; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/08
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
187 words
A method of applying a bed of polymeric insulating foam which comprises: spraying by means of a nozzle a liquid composition, which quickly expands and sets into a dry polymeric insulating foam, in a predetermined pattern of travel onto a horizontal or sloped surface to thereby deposit a layer of insulating foam in the form of a band of preset length and width and with a forward face sloped for a substantial part of the band width; spraying a second band of the liquid composition in a substantially similar predetermined pattern, length and width, as that of the prior layer, onto substantially all of the sloped forward face of the prior band to thereby deposit a sloped second foamed layer as a band on, and without significantly exceeding the height of, the first foamed band; and then applying a sloped third foam band to the second band in a similar manner followed by the consecutive application of additional sloped foam bands until an insulating bed comprising a multitude of sloped foam layers in the form of bands of substantially uniform height or thickness and length is deposited.
Claim 2
Independent Claim
187 words
A method of applying a bed of polymeric insulating foam which comprises: spraying by means of a nozzle a liquid composition, which quickly expands and sets into a dry polymeric insulating foam, in a predetermined pattern of travel onto a horizontal or sloped surface to thereby deposit a layer of insulating foam in the form of a band of preset length and width and with a forward face sloped for a substantial part of the band width; spraying a second band of the liquid composition in a substantially similar predetermined pattern, length and width, as that of the prior layer, onto substantially all of the sloped forward face of the prior band to thereby deposit a sloped second foamed layer as a band on, and without significantly exceeding the height of, the first foamed band; and then applying a sloped third foam band to the second band in a similar manner followed by the consecutive application of additional sloped foam bands until an insulating bed comprising a multitude of sloped foam layers in the form of bands of substantially uniform height or thickness and length is deposited.
Claim 3
Dependent Claim
22 words
A method according to claim 1 in which the liquid composition is sprayed at a substantially uniform volume per band surface area.
Claim 4
Dependent Claim
21 words
A method according to claim 2 in which the liquid composition volume deposited is substantially similar for all of the bands.
Claim 5
Dependent Claim
13 words
A method according to claim 1 in which the bands are substantially linear.
Claim 6
Dependent Claim
13 words
A method according to claim 4 in which the bands are substantially straight.
Claim 7
Dependent Claim
24 words
A method according to claim 1 in which the liquid composition is sprayed from a nozzle maintained a substantially prefixed distance from the surface.
Claim 8
Dependent Claim
15 words
A method according to claim 6 in which the predetermined pattern of spraying is linear.
Claim 9
Dependent Claim
17 words
A method according to claim 6 in which the predetermined pattern of spraying is a straight line.
Claim 10
Dependent Claim
25 words
A method according to claim 1 in which each band is deposited by starting spraying at one end and stopping spraying at the other end.
Claim 11
Dependent Claim
17 words
A method according to claim 9 in which all bands are deposited starting from the same end.
Claim 12
Dependent Claim
18 words
A method according to claim 1 in which deposit of every other band starts at an opposite end.
Claim 13
Dependent Claim
38 words
A method according to claim 1 in which, while the nozzle deposits each band in a predetermined pattern, the nozzle is moved along a predetermined path normal to or at an oblique angle to the nozzle travel pattern.
Claim 14
Dependent Claim
21 words
A method according to claim 12 in which the nozzle is moved at a substantially uniform speed along the predetermined path.
Claim 15
Dependent Claim
13 words
A method according to claim 13 in which the predetermined path is curvilinear.
Claim 16
Dependent Claim
13 words
A method according to claim 13 in which the predetermined path is straight.
Claim 17
Dependent Claim
47 words
A method according to claim 12 or 13 in which the predetermined pattern of spraying is a substantially straight line and the nozzle is moved in a predetermined linear path which is, from one band to the next band, substantially normal to the straight line spraying pattern.
Claim 18
Dependent Claim
18 words
A method according to claim 16 in which the nozzle is maintained a prefixed distance from the surface.
Claim 19
Dependent Claim
18 words
A method according to claim 16 in which the nozzle is maintained a uniform distance from the surface.
Claim 20
Dependent Claim
30 words
A method according to claim 1 in which the surface on which the insulating foam is being deposited is protected against the action of the wind by a wind screen.
Claim 21
Dependent Claim
31 words
A method according to claim 1 in which each foam layer or band is less than 1 inch thick, about 0.5 to 2 feet wide and is sloped at least 15°.
Claim 22
Dependent Claim
27 words
A method according to claim 1 in which the bed in vertical section comprises at least four layers and each layer is less than 1 inch thick.
Claim 23
Dependent Claim
34 words
A method according to claim 1 in which two beds are positioned side-by-side, each insulating bed has at least one sloped side and the sloped sides overlap and form a substantially uniformly thick joint.
Claim 24
Dependent Claim
14 words
A method according to claim 22 in which each bed is straight or curved.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |