Steven C Wells

US Patent:

51937239, Mar 16, 1993

Filed:

Oct 28, 1991

Appl. No.:

7/784161

Inventors:

Alvin J. Everett - Salem VA
Steven Wells - Norfolk VA

International Classification:

E04G 2104

US Classification:

2226112

Abstract:

A mortar applying device (10) includes a motor (12) and hopper (14) mounted on a wheeled (18 and 50) frame (32). The wheels (18) can be driven at variable speeds using the throttle of the engine (12) to accommodate faster and slower rates of block laying. At the forward end of the frame (32) is an arm (34) and wheel (36) assembly which senses the end of the wall under construction and which activates motor cut off switch (44). The hopper (14) is lined with a low coefficient of friction, low adhesion material (70) to prevent mortar from clinging inside the hopper (14). The discharge element (66) located under the open bottom (64) of the hopper (14) includes an angled guide (72) which directs mortar out two exit ports (74 and 76). The height of the ribbons of mortar exiting under gates (80 and 82) is controllable and is smoothed over by a bevelled edge (88).

US Patent:

59385090, Aug 17, 1999

Filed:

Jul 15, 1996

Appl. No.:

8/679869

Inventors:

Thomas J. Fox - Virginia Beach VA
Larry W. Ambrose - Virginia Beach VA
Kenneth G. Brown - Virginia Beach VA
George H. Curtis - Norfolk VA
Edward J. Ketz - Norfolk VA
Cheng Y. Lin - Virginia Beach VA
Frederick H. Porter - Portsmouth VA
Steven C. Wells - Norfolk VA

Assignee:

Center for Advanced Ship Repair and Maintenance, Inc. - Norfolk VA

International Classification:

B24C 306

US Classification:

451 91

Abstract:

Apparatus for abrasive blasting of the bottom of a ship in a drydock includes a blast head mounted on a vertically swinging boom on a vehicle. The blast head has freedom of movement about two pivot axes which are not parallel to each other. One of the pivot axes is coincident with the longitudinal axis of the boom. The center of gravity of the blast head is below the pivot axes when the blast opening normally faces upwardly. The boom and blast head are raised by double acting hydraulic cylinders which hold the blast head against the ship with a constant force. The blast head has a side edge which extends laterally at least to the side edge of the vehicle to facilitate blasting adjacent to obstacles under the hull. An overhung load adapter connects the blast wheel to its motor to minimize radial loads on the blast wheel motor. In the blast head, a stream of blasting material falling toward a main hopper is subjected to a transverse air stream which laterally deflects lighter particles into a debris channel.