Francis M Atkinson

US Patent:

52247945, Jul 6, 1993

Filed:

Dec 23, 1992

Appl. No.:

7/996295

Inventors:

Francis S. Atkinson - Johns Island SC
William G. McDougal - Philomath OR

Assignee:

Atkinson-McDougal Corporation - Philomath OR

International Classification:

E02B 306

US Classification:

405 32

Abstract:

A permeable breakwater for submerged offshore or seawall retentive installation includes a base and permeable opposed sides terminating at an upwardly projecting permeable wave wall. The breakwater is located offshore to cause moderate to heavy waves to break further offshore thereby dissipating their energy before reaching the beach.

US Patent:

51904039, Mar 2, 1993

Filed:

Jun 7, 1991

Appl. No.:

7/712215

Inventors:

Francis S. Atkinson - Johns Island SC

Assignee:

Atkinson-McDougal Corporation - Philomath OR

International Classification:

F02B 312

US Classification:

405 29

Abstract:

An erosion protection device is provided to control erosion in environments prone to water induced erosion. Each individual device includes a central core area, and six generally equally sized legs projecting outward from the core at equal spacing in each direction. Spacers are provided at the interface of the legs and core. Multiple devices are group together to form a protective nested group to form a protective cover.

US Patent:

51746816, Dec 29, 1992

Filed:

Jan 28, 1991

Appl. No.:

7/646300

Inventors:

Francis S. Atkinson - Johns Island SC
William G. McDougal - Philomath OR

Assignee:

Atkinson McDougal Corporation - Corvalis OR

International Classification:

F02B 308

US Classification:

405 34

Abstract:

A permeable breakwater for submerged offshore or seawall retentive installation includes a base and permeable opposed sides terminating at an upwardly projecting permeable wave wall. The breakwater is located offshore to cause moderate to heavy waves to break further offshore thereby dissipating their energy before reaching the beach.