Crooks
Dale G. Crooks, Calgary CA
Patent application number | Description | Published |
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20080217038 | PERCUSSION ADAPTER FOR POSITIVE DISPLACEMENT MOTORS - A percussion adapter for a positive displacement motor including a housing, a torque tube and a reciprocating percussive piston operable by application of fluid pressure thereto. The piston can be driven to create a percussive effect by rotary movement of the torque tube. The percussion adapter can have a bypass option to allow flow through the percussion adapter without operation of the piston. | 09-11-2008 |
Jeffrey J. A. Crooks, Hawkesbury CA
Patent application number | Description | Published |
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20090051218 | Traction Enhancement Device - An enhanced traction device for use with a vehicle having dual tandem wheels includes a series of generally parallel track pads, each track pad having an alignment portion and a traction portion defining first and second ends. Each traction portion includes an inner surface for contacting the vehicle wheels and an outer surface for contacting ground. Each alignment portion extends away from a respective traction portion outer surface and is configured to pass between the dual wheels. The alignment portions maintain proper positioning of the track pads upon the dual tandem wheels of the vehicle. The traction device further includes a first chain coupled to each respective track pad first end for maintaining a predetermined spacing between said track pad first ends. Similarly, the traction device includes a second chain coupled to each track pad second end for maintaining a predetermined spacing between the track pad second ends. | 02-26-2009 |
Regan Crooks, London GB
Patent application number | Description | Published |
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20090197791 | COPOLYMER CONTAINING ZWITTERIONIC UNITS AND OTHER UNITS, COMPOSITION COMPRISING THE COPOLYMER, AND USE - The present invention provides a new copolymer comprising zwitterionic units and other units, a new composition comprising the copolymer, and the use of the copolymer or the compositions for treating or modifying surfaces. | 08-06-2009 |