Patent US4529562A successfully refreshed from Google Patents.
US4529562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for manufacturing a thermally insulated building block
Assignee: Beamech Group Ltd
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Filing: 1982-03-31
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Granted: 1985-07-16
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Expires: 2002-03-31
Abstract
Abstract A method of manufacturing a thermally insulated building block (54a) comprises foaming a quantity of foamable plastics material in an enclosed space (56) between a building block (54) and a closure means (52), the quantity of material being sufficient to fill the enclosed space (56). The foamable material may be injected into a cavity in the block onto an outer surface of the block (54) or onto the closure means (52) prior to locating the block (54) and closure means (52) relative to each other to form the enclosed space (56) therebetween. The block (54) is transported between upper and lower parallel endless belts (55, 50) during foaming and either belt (55, 50) may provide the closure means (52). If the lower belt (50) provides the closure means (52) the upper belt (55) maintains the block (54) in contact with the closure means (52) during foaming.
Inventors
- 👤 Peter Connett
- 👤 Michael Connett
- 👤 James B. Blackwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:12
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; E04C1/41; B; B28; B28B; B28B11/00; B28B11/04; B28B11/042; B28B11/043; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/18; B29L; B29L2031/00; B29L2031/10; B29L2031/102
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
176 words
A method of manufacturing a thermally insulated building block comprising the steps of providing a closure member and a building block, the closure member having a recess shaped and dimensioned to be positionable adjacent an outer surface of the building block to engage the peripheral region of said outer surface and to form, with said outer surface, an enclosed space bounded by said outer surface and an internal surface or surfaces of the closure member recess, injecting onto one of the bounding surfaces, prior to positioning the closure member and the block adjacent to each other, a predetermined quantity of foam-forming ingredients, the predetermined quantity being sufficient when foamed to fill the enclosed space, positioning the closure member and the block adjacent to and engaging each other thereby defining said enclosed space with the ingredients applied to the surface in the space, allowing the ingredients to foam within the space to form a thermal insulating layer substantially covering said outer surface of the block, and separating the closure member from the thermally insulated block thus formed.
Claim 2
Independent Claim
176 words
A method of manufacturing a thermally insulated building block comprising the steps of providing a closure member and a building block, the closure member having a recess shaped and dimensioned to be positionable adjacent an outer surface of the building block to engage the peripheral region of said outer surface and to form, with said outer surface, an enclosed space bounded by said outer surface and an internal surface or surfaces of the closure member recess, injecting onto one of the bounding surfaces, prior to positioning the closure member and the block adjacent to each other, a predetermined quantity of foam-forming ingredients, the predetermined quantity being sufficient when foamed to fill the enclosed space, positioning the closure member and the block adjacent to and engaging each other thereby defining said enclosed space with the ingredients applied to the surface in the space, allowing the ingredients to foam within the space to form a thermal insulating layer substantially covering said outer surface of the block, and separating the closure member from the thermally insulated block thus formed.
Claim 3
Dependent Claim
18 words
A method according to claim 1, wherein the ingredients are injected onto the outer surface of the block.
Claim 4
Dependent Claim
18 words
A method according to claim 1, wherein the ingredients are injected onto a surface of the closure member.
Claim 5
Independent Claim
147 words
An apparatus for manufacturing a thermally insulated building block comprising closure means having a recess shaped and dimensioned to cooperate with a building block to form an enclosed space when said closure means is engaged with said block adjacent the periphery of an outer surface thereof, said enclosed space being bounded by said outer surface and the internal surface or surfaces of said recess; means for dispensing a predetermined quantity of foam-forming ingredients onto one of said bounding surfaces, said quantity being sufficient when foamed to fill said enclosed space; means for moving said block and closure means into engaging juxtaposition with said closure means engaged with said building block in the peripheral region of said outer surface to form said enclosed space, and means for maintaining said engaging juxtaposition while said ingredients are foamed to form a layer of thermal insulation substantially covering said outer surface.
Claim 6
Independent Claim
147 words
An apparatus for manufacturing a thermally insulated building block comprising closure means having a recess shaped and dimensioned to cooperate with a building block to form an enclosed space when said closure means is engaged with said block adjacent the periphery of an outer surface thereof, said enclosed space being bounded by said outer surface and the internal surface or surfaces of said recess; means for dispensing a predetermined quantity of foam-forming ingredients onto one of said bounding surfaces, said quantity being sufficient when foamed to fill said enclosed space; means for moving said block and closure means into engaging juxtaposition with said closure means engaged with said building block in the peripheral region of said outer surface to form said enclosed space, and means for maintaining said engaging juxtaposition while said ingredients are foamed to form a layer of thermal insulation substantially covering said outer surface.
Claim 7
Dependent Claim
19 words
An apparatus according to claim 4 comprising conveyor means for supporting said building block while said ingredients are foamed.
Claim 8
Dependent Claim
34 words
An apparatus according to claim 5, wherein said conveyor means comprises said closure means and wherein said means for maintaining juxtaposition comprises an endless belt disposed above and substantially parallel with said conveyor means.
Claim 9
Dependent Claim
33 words
An apparatus according to claim 5, wherein said conveyor means comprises an endless belt and a plurality of moulds retained on said endless belt, each mould comprising a base and walls upstanding therefrom.
Claim 10
Dependent Claim
26 words
An apparatus according to claim 7, wherein said walls comprise, at least internally of said mould, a deformable material to facilitate sealing of said block therewith.
Claim 11
Dependent Claim
32 words
An apparatus according to claim 6 comprising means for feeding a mould or mould liner onto said conveyor means prior to location of said closure means and said block in engaging disposition.
Claim 12
Dependent Claim
26 words
An apparatus according to claim 4 comprising temperature control means operable to control the temperature of said closure means while said foam forming ingredients are foamed.
References Cited (Backward Citations)
CA711888A
Cited
US2888360A
Cited
US3332187A
Cited
CH451461A
Cited
US3511008A
Cited
US3629384A
Cited
US3646715A
Cited
DE2119358A1
Cited
JPS508249A
Cited
FR2237018A1
Cited
FR2254945A5
Cited
FR2308751A1
Cited
FR2311148A1
Cited
DE2535606A1
Cited
DE2545206A1
Cited
DE2614512A1
Cited
FR2394647A1
Cited
DE2730075A1
Cited
US4130973A
Cited
US4151239A
Cited
GB2027089A
Cited
US4371486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |