Michael Lee Plank

US Patent:

50963341, Mar 17, 1992

Filed:

Sep 28, 1990

Appl. No.:

7/590143

Inventors:

Michael J. Plank - Houston TX

International Classification:

E02D 1704

US Classification:

405283

Abstract:

The present invention comprises a lightweight, portable, adjustable, reusable, preassembled, hydraulic expandable shoring shield for providing safety to personnel working in below-grade excavations. The Shoring shield comprises specially designed solid aluminum extruded sheeting sections forming the walls, each mounted with a top cap and lower skid, the walls are provided with a static expandable telescoping structural framework for holding the walls opposed, and also are provided with hydraulic cylinders for expanding the space enclosed between the walls, the framework and cylinders thus cooperate in combination with an armored manifold for routing fluid to the cylinders.

US Patent:

55135552, May 7, 1996

Filed:

Jan 21, 1994

Appl. No.:

8/184873

Inventors:

Michael J. Plank - Houston TX
Victor M. Cerda - Houston TX
Fred B. Plummer - Houston TX

International Classification:

F15B 1526
E02D 302
F16J 100

US Classification:

92 19

Abstract:

A quick-release cam lock for selectively locking the relative position of a hydraulic cylinder and a piston. The quick-release cam lock permits speedy unlocking and repositioning of the hydraulic cylinder and its accompanying piston, thus allowing for speed in repositioning, assembly or disassembly while also providing a secure positive positioning lock between the hydraulic cylinder and the piston while the quick-release cam lock is engaged. A locking pin selectively locks the cam lock in an opened position.

US Patent:

58680608, Feb 9, 1999

Filed:

Jan 24, 1994

Appl. No.:

8/185138

Inventors:

Michael J. Plank - Houston TX
Victor M. Cerda - Houston TX
Fred B. Plummer - Houston TX

Assignee:

Speed Shore Corp. - Houston TX

International Classification:

F15B 1526

US Classification:

92 19

Abstract:

A quick-release cam lock for selectively locking the relative position of a hydraulic cylinder and a piston. The quick-release cam lock permits speedy unlocking and repositioning of the hydraulic cylinder and its accompanying piston and oversleeve, thus allowing for speed in repositioning, assembly or disassembly while also providing a secure positive positioning lock between the hydraulic cylinder, piston and oversleeve while the quick-release cam lock is engaged.