Strongback attachment system for concrete panel tilt-up construction
AssigneeRichmond Screw Anchor Co., Inc.
InventorDennis W. Tye
Life of this patent
Estimating the term…
Abstract
A fastener system for temporarily securing a reinforcing beam or the like to a poured concrete structural member includes an anchor to be set in poured concrete with an exposed handle portion free of said concrete, and a shaft with a slotted end for receiving the handle portion. A spring loaded pin in the slot retains the handle portion in interlocking engagement with the shaft. An opposite end of the shaft secures a strongback beam to the concrete structure.
Claims17
A fastener system for temporarily securing a strongback beam or the like to a poured concrete structural member, comprising:
- an anchor having a first portion adapted to be set in said poured concrete and to support a connected handle portion free of said concrete;
- and
- a shaft having a threaded end and an opposite end having a fastener head adapted to releasably engage said handle portion of the anchor, said fastener head being integral with said shaft and comprising a diametric slot defined in said opposite end dimensioned to receive said handle portion, hook means defined by diametrically opposed lateral slots opening into said diametric slot on either side thereof, said lateral slots being shaped for receiving and retaining said handle portion against withdrawal from said slot, and biasing means in said diametric slot normally urging said handle portion into retaining relationship with said hook means, said threaded end remaining free for securing a strongback beam to said structural member.
A fastener system for temporarily securing a reinforcing beam or the like to a poured concrete structural member, comprising:
- an anchor having a first portion adapted to be set in said poured concrete and to support a connected handle portion free of said concrete;
- and
- a unitary shaft having one end divided longitudinally by keyway means extending diametrically through said shaft for admitting said handle portion into said keyway means, biasing means engaging said handle within said keyway means for urging said handle portion towards said one end and into retentive engagement with said keyway means, and an opposite shaft end engageable to a strongback beam for securing the strongback beam to said structural member.
A retainer for interlocking to an anchor having a first portion adapted to be set in said poured concrete and to support a connected handle portion free of said concrete on a concrete casting surface, said retainer comprising:
- a shaft having a longitudinally divided slotted end adapted to receive and engage the handle portion, said slotted end including keyway means integral with and extending diametrically through said shaft for releasably engaging said rod section and biasing means contained in said slotted end and acting against said handle portion for urging said handle portion into retentive engagement with said keyway means.
A fastener system for temporarily securing a reinforcing beam or the like to a poured concrete structural member, comprising:
- an anchor having a first portion adapted to be set in said poured concrete and to support a connected handle portion free of said concrete on a concrete casting surface;
- a unitary shaft having a slotted end adapted to receive and engage said handle portion and an opposite shaft end, said handle portion including a rod section generally parallel to said casting surface, said slotted end including keyway means extending diametrically through said shaft for releasably engaging said rod section and biasing means within said slotted end for urging said rod section against disengagement from said keyway means;
- bean retaining means engageable to said opposite shaft end for securing a strongback beam to said structural member.
Dependencies are inferred from the claim text.