Francis J Crowley

US Patent:

41423399, Mar 6, 1979

Filed:

Jun 29, 1977

Appl. No.:

5/811164

Inventors:

Francis X. Crowley - Wellesley MA

International Classification:

E04H 720

US Classification:

52224

Abstract:

A wall-base joint for a concrete tank is constructed by providing in a base a groove larger than the width of a tank wall, placing the wall in the groove to leave a groove portion on each side of the wall, prestressing the wall with a first compressive force, filling the inner (with respect (with respect to the center line of the base) groove portion with concrete and curing it to form a first plug therein, prestressing the wall further with a second compressive force to counteract a fraction of the bending moments produced by the liquid in the tank when it is full, and filling the outer groove portion with concrete and curing it to form a second plug to lock the inner plug into permanent compression.

US Patent:

42703239, Jun 2, 1981

Filed:

May 3, 1979

Appl. No.:

6/035615

Inventors:

Francis X. Crowley - Wellesley MA

International Classification:

E04H 1216

US Classification:

52224

Abstract:

A prestressed concrete tank with a wall of precast concrete panels surrounded by a cast-in-place beam, the beam and panels being prestressed by metal members in tension, encased within or placed around the outside of the beam.

US Patent:

40153835, Apr 5, 1977

Filed:

May 9, 1975

Appl. No.:

5/576121

Inventors:

Francis X. Crowley - Wellesley MA

International Classification:

E04H 1216

US Classification:

52224

Abstract:

A tank constructed of either cast-in-place concrete, or of precast panels of concrete which are separated from each other around the periphery of the tank with the open spaces between the panels being filled with concrete filler units poured in place. One or more collar-like horizontally-lying concrete beams surround the wall of the tank and reinforce it. Each beam is reinforced by one or more tendons encased within the beam.

US Patent:

40783545, Mar 14, 1978

Filed:

Feb 3, 1977

Appl. No.:

5/765356

Inventors:

Francis X. Crowley - Wellesley MA

International Classification:

E04H 720
E04H 1216

US Classification:

52744

Abstract:

A wall-base joint for a concrete tank is constructed by providing in a base a groove larger than the width of a tank wall, placing the wall in the groove to leave a groove portion on each side of the wall, prestressing the wall with a first compressive force, filling the inner (with respect to the center line of the base) groove portion with concrete and curing it to form a first plug therein, prestressing the wall further with a second compressive force to counteract a fraction of the bending moments produced by the liquid in the tank when it is full, and filling the outer groove portion with concrete and curing it to form a second plug to lock the inner plug into permanent compression.

US Patent:

41269764, Nov 28, 1978

Filed:

Dec 22, 1977

Appl. No.:

5/863082

Inventors:

Francis X. Crowley - Wellesley MA

International Classification:

E04H 720
E04H 1216

US Classification:

52224

Abstract:

A prestressed concrete tank comprising a wall of precast concrete panels, cast continuous beams surrounding the wall of panels, the beams including metal prestressing means, and vertically spaced liquid barriers positioned between the inside of the tank and the prestressing means.

US Patent:

RE297771, Sep 26, 1978

Filed:

Jul 22, 1977

Appl. No.:

5/818244

Inventors:

Francis X. Crowley - Wellesley MA

International Classification:

E04H 1216

US Classification:

52224

Abstract:

A tank constructed of either cast-in-place concrete, or of precast panels of concrete which are separated from each other around the periphery of the tank with the open spaces between the panels being filled with concrete filler units poured in place. One or more collar-like horizontally-lying concrete beams surround the wall of the tank and reinforce it. Each beam is reinforced by one or more tendons encased within the beam.