Static structures (e.g. – buildings) – With component having discrete prestressing means – Beam – girder – or truss construction
Patent
1974-06-07
1976-02-03
Ridgill, Jr., James L.
Static structures (e.g., buildings)
With component having discrete prestressing means
Beam, girder, or truss construction
29507, 29512, E04C 310, E04C 326, B21D 3900
Patent
active
039356850
ABSTRACT:
A method of forming an anchor member for use in a concrete prestressing anchorage is disclosed. The method includes the provision of plate means formed with a bore therethrough, positioning of a tubular conduit means in the bore, and urging of the conduit against the side walls of the bore to radially deform the conduit and bore into a tapered bore suitable for mounting of tendon gripping wedges therein. The urging step not only forms the taper in the bore, but also effects securement of the conduit to the plate. The conduit may be positioned to extend from either or both of the front or rear sides of the plate to provide or enable securement of auxiliary structures to the anchor member, e.g., means for mounting of the anchor member to a form board. The method employing the conduit may be used to effect securement of a plurality of plate-like elements together to form a unitized anchor plate. Anchor members including tubular conduit means press-fit into the tapered bore are also disclosed.
REFERENCES:
patent: 850299 (1907-04-01), Dickerson
patent: 2092358 (1937-09-01), Robertson
patent: 3293811 (1966-12-01), Rice
patent: 3605361 (1971-09-01), Howlett et al.
patent: 3703748 (1972-11-01), Kelly
patent: 3762027 (1973-10-01), Bertelson
Howlett Machine Works
Ridgill, Jr. James L.
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