Jesse S Covarrubias, Age 84204 Shalimar Dr, San Antonio, TX 78213

4961293, Oct 9, 1990

Jan 10, 1989

7/295821

Randall House - San Antonio TX
Jesse Covarrubias - San Antonio TX
JoHann H. Hofmann - San Antonio TX
Jerry Powell - San Antonio TX

E04C 310
E02D 2914

52 21

A precast, prestressed concrete secondary containment vault comprised of a sloped, watertight bottom unit capable of holding a primary tank's entire contents, a collar unit sealed to the bottom unit by post-tensioned strands, top panels capable of supporting vehicles, a manhole providing access to permit direct inspection of the primary tank, and means for monitoring, ventilating and pumping the vault. Double-wall pipes for connecting the primary tank to external units and for directing any pipe leakage to the bottom unit are disclosed. The disclosed vault permits the use of less expensive, single-wall tanks which may be repaired in the vault or replaced by removing the top panels.

4964750, Oct 23, 1990

May 4, 1989

7/347482

Randall House - San Antonio TX
Jesse Covarrubias - San Antonio TX

Randall House - San Antonio TX

E01F 1300

404 6

This invention relates to a pre-cast concrete traffic barrier element and a method of constructing a traffic barrier using the element on a vertical face of a retaining wall. The barrier element is a profiled reinforced block of concrete having a bottom surface with a longitudinally extending channel therein. The traffic barrier element is supported on the retaining wall with a top surface of the retaining wall being received within the channel. U-shaped anchoring bars project from an interior portion of the traffic barrier element and from the top surface of the retaining wall to form an oval keyway the length of the longitudinal channel. A locking bar arrangement is inserted through the keyway in a locking relationship with the U-shaped anchoring bars. Sealing material between the traffic barrier element and the retaining wall and between the traffic barrier element and the ground adjacent to the retaining wall on the traffic side prevents the leakage of grout and leveling of the barrier element. Grout is then injected throughout the longitudinal channel and allowed to harden, thus providing a sealed and locked joint.

5131786, Jul 21, 1992

Oct 22, 1990

7/601413

Randall House - San Antonio TX
Jesse Covarrubias - San Antonio TX
Johann H. Hofmann - San Antonio TX

E01F 1300

404 6

This invention relates to a pre-cast concrete traffic barrier element and a method of constructing a traffic barrier using the element on a vertical face of a retaining wall. The barrier element is a profiled reinforced block of concrete having a bottom surface with a longitudinally extending channel therein. The traffic barrier element is supported on the retaining wall with a top surface of the retaining wall being received within the channel. U-shaped anchoring bars project from an interior portion of the traffic barrier element and from the top surface of the retaining wall to form an oval keyway the length of the longitudinal channel. A locking bar arrangement is inserted through the keyway in a locking relationship with the U-shaped anchoring bars. Sealing material between the traffic barrier element and the retaining wall and between the traffic barrier element and the ground adjacent to the retaining wall on the traffic side prevents the leakage of grout and leveling of the barrier element. Grout is then injected throughout the longitudinal channel and allowed to harden, thus providing a sealed and locked joint.