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US3832079A Expired / Lapsed US ⏱️ 0.0 years remaining

Concrete forming apparatus and process

Assignee: Individual
•
Filing: 1972-08-10
•
Granted: 1974-08-27
•
Expires: 1992-08-10
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Abstract

Abstract A concrete or paving forming apparatus and process comprising laying a concrete or paving material and allowing it to cure into a substantially plastic condition and then imprinting it with a pattern impressed therein in a continuous process. A plastic film, or other suitable release agent permits the forming apparatus to be driven into the concrete in a manner whereby it will not remove the surface of the concrete when it is withdrawn. The apparatus generally comprises a roller with a series of patterns formed by means of blades that conform to the pattern that is to be pressed into the concrete. The roller effectively rolls in the pattern while at the same time a sheet of plastic film is laid down on the concrete ahead of the roller. Thus, as the roller is impressed into the concrete and removed, it will not gouge the concrete. Other release agents such as the silicones or the tetrafluorethylenes can be sprayed on the roller blades or on the concrete to prevent binding and gouging of the pavement.

Inventors

  • 👤 W Moorhead

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 13:27
CPC Classifications
B; B44; B44B; B44B5/00; B44B5/02; B44B5/0004; B44B5/0009; E; E01; E01C; E01C19/00; E01C19/22; E01C19/43

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 14 words
The process as claimed in claim 1 wherein said buffer comprises: a plastic sheet.
Claim 2
Dependent Claim 65 words
The process as claimed in claim 2 further comprising: continuously rotating a tool with blades about an axis of rotation for impressment thereof into said concrete; and, paying off said plastic sheet from a roll in a continuous manner so as to allow said blades to strike said plastic sheet and impress themselves into said concrete by movement against said plastic sheet into said concrete.
Claim 3
Dependent Claim 36 words
The process as claimed in claim 2 further comprising: applying a coloring pigment to the surface of said concrete before impressing said blades; and, trowling or causing said coloring agent to be impressed into said concrete.
Claim 4
Dependent Claim 23 words
The process as claimed in claim 1 further comprising: spraying a release agent onto said blades prior to their impressment into said concrete.

References Cited (Backward Citations)

US519919A Cited
US1019539A Cited
US1099185A Cited
US1974979A Cited
US2582199A Cited
US3094046A Cited
US3067469A Cited
US3262375A Cited
US3245478A Cited
US3406618A Cited
US3459108A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-08-26 1978-02-25 1978-08-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-26 1982-02-25 1982-08-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-26 1986-02-25 1986-08-27 $7700.00 Window Closed / Lapsed

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