Backer rod or bond breaker corrective placement tools

Details Backer rod or bond breaker corrective placement tools Backer rod or bond breaker corrective placement tools

1991-04-12

1993-05-18

Neuder, William P.

Road structure, process, or apparatus

Apparatus

Means to install or form joint

52DIG1, E01C 2309

Patent

active

052115062

ABSTRACT:
Tools for correcting placement of backer rod on tape within the spacings between adjacent stones of a building assures proper depth of sealing compound for setting of protective caps and for preventing pulling or separation of the sealing material due to subsequent joint dimensional movement. The tools are based on a flat plate, having an edge of a thickness adapted to a substantial proportion of the width of the joint to be sealed. Along one or both sides of the plate, parallel to the edge, are gauging bars, spaced a distance from the edge proportional to the joint width of the joint for optimum sealing depth. The edge placement tool has an open channel as its operative edge, and in use is tamped along the joint down on backer rod, correcting the placement where the backer rod edges contact the joint walls without displacing the body of the backer rod. The facing tool has an operative edge in the form of a preferred concave cylindrical curve which is slid along the emplaced backer rod forming a proper rod curvature for establishing an optimum sealant rear shape.

REFERENCES:
patent: 2068035 (1937-01-01), Meyer
patent: 2719341 (1955-10-01), Clerk
patent: 2761199 (1956-09-01), Allen
patent: 3395627 (1968-08-01), Barton
patent: 3488828 (1970-01-01), Gallagher
patent: 3550242 (1970-12-01), Sarvay et al.
patent: 4341007 (1982-07-01), Kruszona
patent: 4738562 (1988-04-01), Howsley
patent: 4765771 (1988-08-01), Howsley

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