US4641470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction element
Assignee: Individual
•
Filing: 1985-07-31
•
Granted: 1987-02-10
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Expires: 2005-07-31
Abstract
Abstract The construction element comprises two different parts. A first bearing part (1) has cavities of cylindrical cross-section with rounded ends and is constituted by light concrete having a resistance to compression comprised between 25 and 175 kg/cm2 and an apparent density comprised between 900 and 1250 kg/m3. The second insulating part (2), of an apparent density of at most 270 kg/m3, is constituted of an hydraulic binder based on cement, a synthetic resin and an expanded mineral filler. The heat transmission coefficient k in the direction perpendicular to said parts of the monolithic element is less than or equal to k=0,40 (W/mK).
Inventors
- 👤 Werner Baumberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:10
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; E04C1/41
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
Construction element having dimensions of height, width and thickness, comprising a first bearing part formed from a light concrete having compression resistance between 25 and 175 kg/cm 2 and an apparent density between 900 and 1250 kg/m 3 , said bearing part comprising elongated cylindrical cavities extending in said height dimension, elongated in said width dimension, and arranged in alternating rows in said thickness dimension, said cavities forming about 25% by volume of said bearing part; and a second insulating part formed from a hydraulic binder based on cement, a first synthetic resin and an expanded mineral filler, said insulating part having an apparent density of at most 270 kg/m 3 , said bearing part having a greater extent in said thickness dimension than said insulating part, said bearing and insulating parts being fixed together along a plane substantially perpendicular to said thickness dimension.
Claim 2
Dependent Claim
144 words
Construction element having dimensions of height, width and thickness, comprising a first bearing part formed from a light concrete having compression resistance between 25 and 175 kg/cm 2 and an apparent density between 900 and 1250 kg/m 3 , said bearing part comprising elongated cylindrical cavities extending in said height dimension, elongated in said width dimension, and arranged in alternating rows in said thickness dimension, said cavities forming about 25% by volume of said bearing part; and a second insulating part formed from a hydraulic binder based on cement, a first synthetic resin and an expanded mineral filler, said insulating part having an apparent density of at most 270 kg/m 3 , said bearing part having a greater extent in said thickness dimension than said insulating part, said bearing and insulating parts being fixed together along a plane substantially perpendicular to said thickness dimension.
Claim 3
Dependent Claim
22 words
Construction element according to claim 1, wherein said first bearing part further comprises a second synthetic resin mixed with said light concrete.
Claim 4
Dependent Claim
16 words
Construction element according to claim 2, wherein said first and second synthetic resins are acrylic resins.
Claim 5
Dependent Claim
32 words
Construction element according to claim 1, wherein said light concrete comprises an hydraulic binder selected from the group consisting of blast furnace slag, pumice stone, crushed terracotta, expanded clay, slate and pozzolana.
Claim 6
Dependent Claim
30 words
Construction element according to claim 1, wherein said expanded mineral filler is selected from the group consisting of cellular glass balls, vermiculite, granulated polyurethane, mica, expanded polystyrene and wood chips.
Claim 7
Dependent Claim
22 words
Construction element according to claim 1, wherein each said bearing and insulating parts comprise peripheral portions having at least one coupling groove.
Claim 8
Dependent Claim
33 words
Construction element according to claim 1, wherein said insulating part has an extent in said thickness dimension equal to at least 40% of the extent of said bearing part in said thickness dimension.
Claim 9
Dependent Claim
17 words
Construction element according to claim 1, wherein said element has a rectangular shape when viewed from above.
Claim 10
Dependent Claim
27 words
Construction element according to claim 1, wherein bearing part is rectangular and said insulating part has an L-shape and borders two adjacent faces of said bearing part.
References Cited (Backward Citations)
BE480990A
Cited
FR2189601A1
Cited
FR2237018A1
Cited
US4263372A
Cited
US4309325A
Cited
US4372092A
Cited
US4130973A
Cited
FR2456179A1
Cited
FR2442930A2
Cited
FR2446704A1
Cited
DE2914647A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-09 | 1990-08-11 | 1991-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-09 | 1994-08-11 | 1995-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-09 | 1998-08-11 | 1999-02-10 | $7700.00 | Window Closed / Lapsed |