US 9,394,706 B2Granted

Concrete anchor

AssigneeSimpson Strong-Tie Company, Inc.

InventorJin-Jie Lin

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Abstract

An anchor particularly adapted to be embedded into a concrete construction for suspension of a ceiling panel, duct or the like, includes a base which receives inserts that have an axial threaded bore. The base is open at its lower end and can receive a threaded rod by virtue of ratcheting inserts received within the base. The inserts and base are particularly shaped to prevent jam and ease of insertion of the rod in the anchor. The anchor also has a head flange that sits above a plurality of fasteners secured to the anchor which is used to simultaneously drive the fasteners into a form for the concrete member. The fasteners are connected to the anchor extending in generally parallel and spaced relation to the anchor. The fasteners can be held by a support or sleeve-like holder which surrounds at least a portion of the base of the anchor or they can be attached to the base of the anchor. The fasteners project downwardly through the bottom of the anchor for driving into the form board.

Claims19

Dependent claims

A connection between a rod, an anchor, and a first structural member, the connection comprising:

a. the first structural member;
b. the rod;
and
c. the anchor, connecting the first structural member to the rod, the anchor including a housing, the housing having a bottom, a top and a longitudinal central axis extending through the bottom and the top, the housing having an insert receiving bore that opens through the bottom of the housing, the insert receiving bore having a narrowing lower portion closer to the bottom than the top of the housing;
and wherein a plurality of inserts are disposed in the insert receiving bore and contained securely within the housing, each of the inserts has a base bore interfacing surface that interfaces with the narrowing lower portion of the insert receiving bore of the housing, wherein each insert has a concave inner surface and the plurality of concave inner surfaces form a generally tubular interior rod receiving bore that receives a portion of the rod, and the inserts are sized with respect to the housing such that when the rod is received in the interior rod receiving bore and engages the inserts and moves toward the bottom of the housing, the inserts will be pulled toward the bottom of the housing, and the narrowing in the lower portion of the insert receiving bore causes a constriction of the inserts about the rod forcing them to grasp and hold the rod, and when the rod is inserted into the interior rod receiving bore and moves toward the top of the housing, the inserts can be moved away from each other and from the longitudinal, central axis of the housing, allowing the rod to be inserted farther into the housing and towards the top of the housing;
and wherein
d. the housing is formed with a bottom base-bore ledge that is part of the insert receiving bore and is closer to the bottom of the housing than the narrowing lower portion of the insert receiving bore;
and inwardly from the base-bore bottom ledge towards the longitudinal, central axis of the housing a lip is provided that ascends toward the top of the housing.

5 more elements

A connection between a rod, an anchor, and a first structural member, the connection comprising:

a. the first structural member;
b. the rod;
and
c. the anchor, connecting the first structural member to the rod, the anchor including a housing, the housing having a bottom, a top and a longitudinal central axis extending through the bottom and the top, the housing having an insert receiving bore that opens through the bottom of the housing, the insert receiving bore having a narrowing lower portion closer to the bottom than the top of the housing;
and wherein a plurality of inserts are disposed in the insert receiving bore and contained securely within the housing, each of the inserts has a base bore interfacing surface that interfaces with the narrowing lower portion of the insert receiving bore of the housing, wherein each insert has a concave inner surface and the plurality of concave inner surfaces form a generally tubular interior rod receiving bore that receives a portion of the rod, and the inserts are sized with respect to the housing such that when the rod is received in the interior rod receiving bore and engages the inserts and moves toward the bottom of the housing, the inserts will be pulled toward the bottom of the housing, and the narrowing in the lower portion of the insert receiving bore causes a constriction of the inserts about the rod forcing them to grasp and hold the rod, and when the rod is inserted into the interior rod receiving bore and moves toward the top of the housing, the inserts can be moved away from each other and from the longitudinal, central axis of the housing, allowing the rod to be inserted farther into the housing and towards the top of the housing;
and wherein
d. the lower portion of the insert receiving bore of the housing has a base-bore first sliding surface disposed at an angle to the longitudinal, central axis of the anchor, and above the base-bore first sliding surface, closer to the top of the anchor is a middle housing wall with an angle of ascension much greater than the base-bore first sliding surface, the middle housing wall extends towards the top of the anchor to a shoulder which has a lower angle of ascension than the middle housing wall, and above the shoulder, closer to the top of the anchor is an upper housing wall that extends at an angle of ascension much greater than the base-bore first sliding surface.

4 more elements

A connection between a rod, an anchor, and a first structural member, the connection comprising:

a. the first structural member;
b. the rod;
and
c. the anchor, connecting the first structural member to the rod, the anchor including a housing, the housing having a bottom, a top and a longitudinal central axis extending through the bottom and the top, the housing having an insert receiving bore that opens through the bottom of the housing, the insert receiving bore having a narrowing lower portion closer to the bottom than the top of the housing;
and wherein a plurality of inserts are disposed in the insert receiving bore and contained securely within the housing, each of the inserts has a base bore interfacing surface that interfaces with the narrowing lower portion of the insert receiving bore of the housing, wherein each insert has a concave inner surface and the plurality of concave inner surfaces form a generally tubular interior rod receiving bore that receives a portion of the rod, and the inserts are sized with respect to the housing such that when the rod is received in the interior rod receiving bore and engages the inserts and moves toward the bottom of the housing, the inserts will be pulled toward the bottom of the housing, and the narrowing in the lower portion of the insert receiving bore causes a constriction of the inserts about the rod forcing them to grasp and hold the rod, and when the rod is inserted into the interior rod receiving bore and moves toward the top of the housing, the inserts can be moved away from each other and from the longitudinal, central axis of the housing, allowing the rod to be inserted farther into the housing and towards the top of the housing;
and wherein
d. one or more of the inserts are formed with a tab on the base bore interfacing surface, and the tab extends only partially down the base bore interfacing surface;
and wherein:
e. the base bore interfacing surface descends from a top surface of the inserts and tapers to a bottom edge of the insert;
f. the insert receiving bore is formed with one or more notches terminating at ledges where the notches are closest to the bottom of the housing;
and
g. the one or more tabs of the inserts interface with and are at least partially received by each of the one or more notches.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/510,035Filed 8 Oct 2014 · us provisional application
Priority: 8 Oct 2013
Published: US 2015/0096242 A19 Apr 2015
Granted: 19 Jul 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

E04B 1/4157
Connecting devices specially adapted for embedding in concrete or masonry: longitudinally-externally threaded elements extending from the concrete…
B28B 23/005
Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material;…
E04B 1/4121
Elements with sockets: with internal threads or non-adjustable captive nuts
E04B 1/4135
Elements with sockets: receiving removal bolt heads