US4211385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete form structure
Assignee: FOAM PLY Inc
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Filing: 1978-11-16
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Granted: 1980-07-08
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Expires: 1998-11-16
Abstract
Abstract The specification discloses concrete forms each including a plurality of rectangular panels secured edgewise together by connectors. Each connector includes a pair of half sleeves secured in a pair of grooves in the edges of the panels, and a cupped head of a connector sleeve wedges the half sleeves together to hold the panels in edgewise abutment. A nut screwed on the connector sleeve draws the cupped head into wedging engagement with the half sleeves. Tie rods extend through the connector sleeves. The panels include wood framing having plywood faces and filled with foamed plastic.
Inventors
- 👤 Ronald C. Johanson
- 👤 Bill W. McDonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:55
CPC Classifications
E; E04; E04G; E04G9/00; E04G9/10; E04G17/00; E04G17/02; E04G17/06; E04G17/065; E04G17/0651; E04G9/02; E04G9/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
89 words
In a concrete form, a plurality of panel members fitting together edgewise, a plurality of arcuate segments secured to the edges of the panel members and forming a sleeve when the panel members are fitted edgewise together, a first fastening member having a shank portion extending through the sleeve and also having an undercut head at one end thereof for overhanging one end of each of the segments, and a second fastener member for drawing the head over the ends of the segments to hold the segments against separation.
Claim 2
Dependent Claim
89 words
In a concrete form, a plurality of panel members fitting together edgewise, a plurality of arcuate segments secured to the edges of the panel members and forming a sleeve when the panel members are fitted edgewise together, a first fastening member having a shank portion extending through the sleeve and also having an undercut head at one end thereof for overhanging one end of each of the segments, and a second fastener member for drawing the head over the ends of the segments to hold the segments against separation.
Claim 3
Dependent Claim
24 words
The concrete form of claim 1 wherein the shank portion is threaded and the second fastening member is a nut engaging the panel members.
Claim 4
Dependent Claim
22 words
The concrete form of claim 2 in which the first fastening member is tubular to permit a tie rod to pass therethrough.
Claim 5
Dependent Claim
20 words
The concrete form of claim 1 in which each panel member includes a hollow shell filled with a plastic foam.
Claim 6
Dependent Claim
16 words
The concrete form of claim 4 wherein each panel has wood edge portions and plywood faces.
Claim 7
Dependent Claim
30 words
In a concrete form member, a panel including a wood edge member having a transverse groove, and a half-sleeve arcuate segment secured to the edge member in the groove thereof.
Claim 8
Dependent Claim
30 words
In a concrete form member, a panel including a wood edge member having a transverse groove, and a half-sleeve arcuate segment secured to the edge member in the groove thereof.
Claim 9
Dependent Claim
54 words
In a fastener assembly for a concrete form, a pair of arcuate segments having fastener portions, a fastener member having an undercut head fitting over one end of each of the segments and a shank extending through a hole formed by the segments, and a second fastener member secured to the first fastening member.
Claim 10
Dependent Claim
54 words
In a fastener assembly for a concrete form, a pair of arcuate segments having fastener portions, a fastener member having an undercut head fitting over one end of each of the segments and a shank extending through a hole formed by the segments, and a second fastener member secured to the first fastening member.
Claim 11
Dependent Claim
23 words
The fastener assembly of claim 7 wherein the shank is threaded and the second fastener member is a nut screwed onto the shank.
Claim 12
Dependent Claim
17 words
The fastener assembly of claim 7 wherein the fastener member has a splining key on the shank.
Claim 13
Dependent Claim
34 words
The fastener assembly of claim 8 wherein the shank member has a stop thereon adapted to engage the other end of one of the segments when the nut is being screwed onto the shank.
Claim 14
Dependent Claim
72 words
In a fastener assembly for a concrete form, a pair of fastening members adapted to be secured to the edges of two panels of a concrete form, a third fastening member having a head and a threaded shank, and a nut on the shank for pressing against the panels to pull the head into engagement with the pair of fastening members, the head and the pair of fastening members having interlocking portions.
Claim 15
Dependent Claim
72 words
In a fastener assembly for a concrete form, a pair of fastening members adapted to be secured to the edges of two panels of a concrete form, a third fastening member having a head and a threaded shank, and a nut on the shank for pressing against the panels to pull the head into engagement with the pair of fastening members, the head and the pair of fastening members having interlocking portions.
Claim 16
Dependent Claim
25 words
The fastener assembly of claim 11 wherein the pair of fastening members have bevelled ends and the head is undercut to receive the bevelled ends.
Claim 17
Dependent Claim
13 words
The fastener assembly of claim 12 wherein the third fastening member is tubular.
Claim 18
Dependent Claim
22 words
The fastener assembly of claim 13 wherein the pair of fastening members are half sleeves with bolt-like retainers secured to the panels.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-08 | 1984-01-07 | 1984-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-08 | 1988-01-07 | 1988-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-08 | 1992-01-07 | 1992-07-08 | $7700.00 | Window Closed / Lapsed |