EP 0378437 A3 19910116 - METHOD OF APPLYING A MORTAR MATERIAL TO A SURFACE

Title (en)

METHOD OF APPLYING A MORTAR MATERIAL TO A SURFACE

Publication

EP 0378437 A3 19910116 (EN)

Application

EP 90300376 A 19900112

Priority

GB 8900736 A 19890113

Abstract (en)

[origin: EP0378437A2] Simulated stone products are prepared by spraying a mortar material, in a blast of compressed air, into a mould by means of a gun 10, 14, 16, to which the mortar material is fed via a lateral inlet 12 by a peristaltic pump. Compressed air is supplied to an axially extending pipe 18 within the body 10 of the gun, the pipe 18 terminating, within the body 10, just short of a nozzle 16 from which the mortar spray is ejected. The mortar is effectively "atomised" in the spray, so that individual aggregate particles, such as sand grains, coated with cement, are hurled at high speed, in the spray, against the mould surface or against the previously deposited particle to form a densely packed aggregate layer which, in curing, de-moulding and surface etching or abrasion, closely simulates the appearance of natural stone. The apparatus and method disclosed allow, inter alia, products which are relatively thin and light, and are yet strong, to be produced economically.

IPC 1-7

E04F 21/12; B28B 1/32; B28B 11/08; B28B 23/02; B05B 7/04

IPC 8 full level

B28B 1/32 (2006.01); B28B 11/08 (2006.01); E04F 21/12 (2006.01)

CPC (source: EP)

B28B 1/32 (2013.01); B28B 11/0818 (2013.01); E04F 21/12 (2013.01)

Citation (search report)

[X] FR 2228364 A5 19741129 - IPPOLITO MARCEAU [CI]
[X] GB 1489604 A 19771026 - WILCE B
[X] US 4668451 A 19870526 - LANGSON BRUCE K [US]
[Y] AU 421448 A
[X] GB 2011518 A 19790711 - IBSTOCK BUILDING PRODUCTS LTD
[X] GB 2145353 A 19850327 - CORROSION SYSTEMS LIMITED
[X] FR 2421679 A1 19791102 - LAMBERT IND [FR]
[Y] US 3708124 A 19730102 - KELLERT P
[Y] EP 0200026 A2 19861105 - NEUMULLER WALTER DKFM ING [AT], et al
[Y] US 2004465 A 19350611 - CHARLES DIETRICHS
[Y] FR 2577844 A1 19860829 - GORGET JACQUES [FR]
[Y] GB 1306793 A 19730214 - BRITISH CERAMIC RES ASS

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB GR IT LI LU NL

DOCDB simple family (publication)

EP 0378437 A2 19900718; EP 0378437 A3 19910116; EP 0378437 B1 19940518; AT E105904 T1 19940615; DE 69008873 D1 19940623; DE 69008873 T2 19950105; GB 8900736 D0 19890308

DOCDB simple family (application)

EP 90300376 A 19900112; AT 90300376 T 19900112; DE 69008873 T 19900112; GB 8900736 A 19890113