Paving unit

Road structure – process – or apparatus – Pavement – Modules or blocks

Reexamination Certificate

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Details

C404S034000, C404S041000, C052S603000, C052S605000

Reexamination Certificate

active

06988847

ABSTRACT:
A interlocking paving unit has a top surface (2) and a plurality of side surfaces (4, 5), with at least one of the side surfaces (4, 5) of the paving unit being provided with at least one substantially vertically extending, substantially asymmetric protrusion (10). The protrusion (10) comprises a first ridge portion (11) and a second portion (12) being spaced apart by an intermediate portion (13). The protrusion (10) is locatable in a complementary recess on an adjacent paving unit, wherein the interengagement between the protrusion and the recess provides interlock between the paving unit and an adjacent paving unit.

REFERENCES:
patent: 1045328 (1912-11-01), Sammis
patent: 1812711 (1931-06-01), Pessione
patent: 2605681 (1952-08-01), Trief
patent: 3229439 (1966-01-01), Strobel
patent: 3522618 (1970-08-01), Stranzinger
patent: 3873225 (1975-03-01), Jakobsen et al.
patent: D262742 (1982-01-01), Vesterholt
patent: 5052158 (1991-10-01), D'Luzansky
patent: 5503498 (1996-04-01), Scheiwiller
patent: 6471440 (2002-10-01), Scheiwiller
patent: 6863469 (2005-03-01), Bolduc et al.
patent: 26 38 905 (1977-03-01), None
patent: 26 34 586 (1977-09-01), None
patent: 296 04 736 (1996-07-01), None
patent: 1.009.462 (1952-05-01), None
patent: 1379825 (1971-10-01), None
patent: 2307260 (1997-05-01), None
patent: 8-199502 (1996-08-01), None
patent: 10-195843 (1998-07-01), None

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