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US3611735A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making concrete bodies

Assignee: Construction Techniques Inc
•
Filing: 1968-10-24
•
Granted: 1971-10-12
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Expires: 1988-10-24
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Abstract

Abstract A CONCRETE BODY IS FORMED WITH A PERFORATE TUBE OR TUBES ENCASED IN A FILTER SLEEVE IMMERSED IN THE CONCERETE. THE TUBE MAY BE INSTALLED BY INSERTING IT INTO THE HOLLOW SHAFT OF AN AUGER AND INJECTING GROUT THROUGH THE SHAFT WHILE THE AUGER IS WITHDRAWN THEREBY LEAVING THE TUBE EMBEDDED IN THE GROUT. ALTERNATIVELY, THE TUBE MAY BE INSERTED DIRECTLY INTO FRESHLY PLACED CONCRETE OR MAY BE SET IN AN OPEN HOLE OR CASING OR FORM PRIOR TO PLACEMENT OF THE CONCERETE OR GROUP. WITH EITHER METHOD, THE TUBE FORMS A HOLLOW CORE BY WHICH EXCESS WATER MAY BE REMOVED TO IMPROVED THE QUALITY OF THE CONCRETE. ALSO, THE CORE MAY BE USED FOR INSERTING A VIBRATORY SOURCE, TESTING EQUIPMENT, INSTALLING REINFORCING MEMBERS, OR OTHER USEFUL PURPOSES.

Inventors

  • 👤 Donald S Daczko

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 09:37
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/34; E02D5/36; E02D5/62

Claims Analysis

Total Claims: 0
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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) 1974-10-11 1975-04-12 1975-10-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-11 1979-04-12 1979-10-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-11 1983-04-12 1983-10-12 $7700.00 Window Closed / Lapsed

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