CRAIG K WALLACE
Engineering in Braintree, MA
License number
Massachusetts 35145
Issued Date
Feb 28, 1990
Expiration Date
Jun 30, 2018
Type
Mechanical Engineer
Address
Address
Braintree, MA 02184
Professional information
Apparatus And Method For Refinishing A Surface In-Situ
US Patent:
2012000, Jan 5, 2012
Filed:
Jul 1, 2010
Appl. No.:
12/828416
Inventors:
David A. Hudson - Stoughton MA, US
Craig Karl Wallace - Braintree MA, US
Michael McLaughlin - Stoughton MA, US
John A. Umina - Waltham MA, US
John D. Andrews - Boxborough MA, US
Richard D. Regan - Framingham MA, US
Craig Karl Wallace - Braintree MA, US
Michael McLaughlin - Stoughton MA, US
John A. Umina - Waltham MA, US
John D. Andrews - Boxborough MA, US
Richard D. Regan - Framingham MA, US
Assignee:
ARTISAN INDUSTRIES INC. - Waltham MA
International Classification:
B24B 51/00, B24B 15/04
US Classification:
451 5, 451252
Abstract:
A rotary grinding system includes a support frame and a grinding assembly coupled to the support frame for longitudinal movement, with respect to a workpiece attached to the support frame. A radial arm is suspended below the grinding assembly and rotated in a plane parallel to the workpiece. A grinding wheel traverses the radial arm, thereby working a circular, annular or sector portion of the workpiece. The height, and therefore the depth of cut, of the grinding wheel may be precisely adjusted via a single point adjustment screw or the like. Optionally, the grinding system may be controlled by a computer numeric controller (CNC) to automatically refinish programmed portions or all of the workpiece. Eccentric pins extending from the support frame and into the workpiece may be used to adjust the lateral position of the support frame, relative to the workpiece. Support members may be used to offload the weight of at least a portion of the grinding assembly, thereby relieving bearings of this weight, such as during shipment or storage of the system.
Vertical Wiped Thin-Film Evaporator
US Patent:
2011010, May 5, 2011
Filed:
Nov 1, 2010
Appl. No.:
12/917317
Inventors:
Perry Alasti - Chestnut Hill MA, US
James Russell Steeves - Ayer MA, US
Craig Karl Wallace - Braintree MA, US
James Russell Steeves - Ayer MA, US
Craig Karl Wallace - Braintree MA, US
Assignee:
ARTISAN INDUSTRIES INC. - Waltham MA
International Classification:
B01D 1/24
US Classification:
159 111, 159 49
Abstract:
A vertical wiped thin-film evaporator (WFE) may be bottom fed or top fed. Some embodiments have integral entrainment separation devices. Some embodiments are configured with replaceable rotor blade cartridges to facilitate experimenting with different blade configurations, blade pitches and directions (up or down) of thin film displacement for various modes of operation. Some embodiments can be operated in either co-current or counter-current modes, without requiring modification to their “overheads” (entrainment separation, condensing and vacuum) systems. Some embodiments include a variety of feed nozzles and/or a variety of “bottoms” nozzles. The available nozzles provide flexibility in operating the device, such as selecting a mode (top feeding or bottom feeding) of operation or co-current or counter-current vapor extraction.