Static structures (e.g. – buildings) – With component having discrete prestressing means – Specific prestressing means
Patent
1996-06-24
1998-02-17
Friedman, Carl D.
Static structures (e.g., buildings)
With component having discrete prestressing means
Specific prestressing means
264228, 264229, 264136R, 2641226, E04C 326, E04C 508, E04B 138
Patent
active
057180903
ABSTRACT:
A prestressed concrete tensioning system for a tensioning tendon in the construction of a prestressed concrete beam comprising an anchor seat and a prestressed tensioning device. The anchor seat embedded in one end of the beam and has spherical structure and inverse ratchet gripping device therein for adjustably holding one end of the tendon. The tensioning device has a hollow cylindrical housing including a hydraulic fluid chamber therein for slidably disposing a piston member in associated with a wedged surface grip means which are operated by hydraulic pressure for gripping and tensioning one end of the tendon, and a hemisphere concave in the forward end of the housing for engaging with the hemisphere convex of the anchor seat to obtain an universal joint effect. This disclosure is characterized in the prevention of shear and strength declination to the tendon and the risk to the ambient personnel. A supplemental tensioning device is provided to give greater flexibility to the prestressed concrete tensioning operation.
REFERENCES:
patent: 4362421 (1982-12-01), Kelly
patent: 4507008 (1985-03-01), Adl et al.
patent: 4641816 (1987-02-01), Kishida et al.
patent: 4744691 (1988-05-01), Thal
patent: 4888922 (1989-12-01), Lancelot
patent: 4936006 (1990-06-01), Creedon
patent: 5022780 (1991-06-01), Shaw
patent: 5136755 (1992-08-01), Shaw
patent: 5342568 (1994-08-01), Yokota
patent: 5369849 (1994-12-01), De France
Friedman Carl D.
Horton-Richardson Yvonne
LandOfFree
Prestressed concrete tensioning system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Prestressed concrete tensioning system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prestressed concrete tensioning system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1775595