US4085918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite construction form system
Assignee: Individual
•
Filing: 1976-09-15
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Granted: 1978-04-25
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Expires: 1996-09-15
Abstract
Abstract In abstract, a preferred embodiment of this invention is a multi-purpose form system for use in culverts, manholes and other locations. A basic semi-cylindrical form is provided for use in combination with other types of forms to give a complete system for accomplishing the results intended.
Inventors
- 👤 Joseph Felton Wilkerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:09
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; B; B28; B28B; B28B7/00; B28B7/16; B28B7/168
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
139 words
A system of forms for use with concrete and other setable materials comprising: a first relatively thin walled, semi-cylindrical form means having two open end portions and being elongated so as to define a longitudinal axis through said form means, an open side and two edges adjacent such side; means secured adjacent and extending between opposite edges across said open side for drawing said edges toward each other; a generally flat cover means removably enclosing said open side of said form; means for releasably retaining said cover means relative to said form means; and an adjustable anchoring means connected to said form means adjacent one of said open end portions and movable in a direction generally parallel to said longitudinal axis for steadying said form means during the pouring of setable material whereby an improved form system is provided.
Claim 2
Independent Claim
139 words
A system of forms for use with concrete and other setable materials comprising: a first relatively thin walled, semi-cylindrical form means having two open end portions and being elongated so as to define a longitudinal axis through said form means, an open side and two edges adjacent such side; means secured adjacent and extending between opposite edges across said open side for drawing said edges toward each other; a generally flat cover means removably enclosing said open side of said form; means for releasably retaining said cover means relative to said form means; and an adjustable anchoring means connected to said form means adjacent one of said open end portions and movable in a direction generally parallel to said longitudinal axis for steadying said form means during the pouring of setable material whereby an improved form system is provided.
Claim 3
Dependent Claim
68 words
The form system of claim 1 including a second relatively thin walled, elongated, semi-cylindrical form means of similar structure to said first form means and having one end so shaped as to conform to at least a portion of the exterior of said first form means disposed generally perpendicular thereto with said edges of both said first and said second form means lying generally in the same plane.
Claim 4
Dependent Claim
23 words
The form system of claim 2 including means integral with said second form means supporting the same juxtaposed to said first form means.
Claim 5
Dependent Claim
20 words
The form system of claim 3 wherein the supporting means are hooks secured to the edges of said second form.
Claim 6
Dependent Claim
33 words
The form system of claim 1 wherein said cover means includes generally parallely disposed upturned edges on opposite sides of said cover whereby the setable material can more easily be worked and formed.
Claim 7
Dependent Claim
58 words
The form system of claim 1 wherein an adjustable coffer dam means is provided for use adjacent said form means, said coffer dam disposed outside of said form means and including two laterally spaced walls extending in parallel relationship to the longitudinal axis of said form means such that said form means extends generally between said coffer dam.
References Cited (Backward Citations)
US405652A
Cited
US3123885A
Cited
US875551A
Cited
US1049352A
Cited
US1850463A
Cited
US2635320A
Cited
US2704875A
Cited
US2929125A
Cited
US3227788A
Cited
US3570801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |