Patent US3627722A successfully refreshed from Google Patents.
US3880397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bowed tie rod with deformable cone means
Assignee: BECKER Inc
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Filing: 1973-07-16
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Granted: 1975-04-29
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Expires: 1993-07-16
Abstract
Abstract The end of a snappable concrete form tie rod extends through an opening in a concrete form panel. The tie rod has a weakened portion at which its end may be snapped off after the concrete has hardened. The end of the tie rod is flattened adjacent to the head thereof, one end of the flattened portion forming a shoulder which engages a bracket for holding the tie rod in position. The flattened portion may be engaged by a wrench for applying torque to the end of the tie rod to snap it off. A cone member is positioned on the tie rod between the weakened portion and the head. The cone member has a central opening extending lengthwise therethrough which is somewhat larger in diameter than the tie rod for slideably receiving the same. The tie rod has an outwardly bowed portion between the weakened portion thereof and the head to bind the cone member in a predetermined position on the tie rod.
Inventors
- 👤 Donald E Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:53
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/06; E04G17/07; E04G17/0707; E04G17/0721
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
197 words
In a snappable concrete form tie rod having a head on at least one end thereof, and having a weakened portion spaced inwardly from said head whereby the end of the tie rod may be snapped off by applying a torque thereto, and having a cone member on said tie rod between said weakened portion and said head, the improvement wherein said cone member is constructed of deformable material and nas a longitudinally-extending bore therein which is somewhat larger in diameter than said tie rod, whereby said cone member may be freely slid along said tie rod until close to assembled position, a portion of the length of said tie rod being outwardly bowed between said weakened portion and said head while maintainingf the original diameter of the tie rod, with said outwardly-bowed portion positioned within said cone portion, and the deformable material of the cone allowing the larger diameter of its bore to deform enough to accept the bowed portion of the rod but not enough to prevent the bowed portion from binding within the bore to thereby releasably hold said cone member in final assembled position on said tie rod next to the weakened portion.
Claim 2
Dependent Claim
197 words
In a snappable concrete form tie rod having a head on at least one end thereof, and having a weakened portion spaced inwardly from said head whereby the end of the tie rod may be snapped off by applying a torque thereto, and having a cone member on said tie rod between said weakened portion and said head, the improvement wherein said cone member is constructed of deformable material and nas a longitudinally-extending bore therein which is somewhat larger in diameter than said tie rod, whereby said cone member may be freely slid along said tie rod until close to assembled position, a portion of the length of said tie rod being outwardly bowed between said weakened portion and said head while maintainingf the original diameter of the tie rod, with said outwardly-bowed portion positioned within said cone portion, and the deformable material of the cone allowing the larger diameter of its bore to deform enough to accept the bowed portion of the rod but not enough to prevent the bowed portion from binding within the bore to thereby releasably hold said cone member in final assembled position on said tie rod next to the weakened portion.
Claim 3
Dependent Claim
25 words
The improvement defined in claim 1 wherein the length of the outwardly-bowed portion is less than the length of the bore of the cone member.
Claim 4
Dependent Claim
39 words
The improvement defined in claim 1 wherein the binding engagement between the bowed portion of the tie rod and the bore of the cone is the sole means for releasably holding the cone against movement on the tie rod.
References Cited (Backward Citations)
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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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |