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Gerwing
Dave Gerwing, Ottawa CA
| Patent application number | Description | Published |
|---|---|---|
| 20080276929 | SOLAR COLLECTOR - The invention provides a solar collector comprising a trough-like reflector for receiving solar rays and for concentrating the rays in a direction generally transverse to the length of the reflector between its ends. Concentrator means is provided for receiving the concentrated rays from the trough-like reflector and for concentrating the rays in one or more of a direction generally along said length and a direction generally transverse to said length. | 11-13-2008 |
David H. Gerwing, Ottawa CA
| Patent application number | Description | Published |
|---|---|---|
| 20100228122 | MICROBUBBLE MEDICAL DEVICES - Method and medical devices for generating and stabilizing micro- or nano-bubbles, and systems and methods for therapeutic applications using the bubbles, are provided. The micro-bubbles may be used to enhance therapeutic benefits such as ultrasound-guided precision drug delivery and real-time verification, acoustic activation of large tumour masses, enhanced acoustic activation through longer retention of therapeutic agents at the point of interest, enhancement of high intensity focused ultrasound treatments, light activation of photodynamic drugs at a depth within a patient using extracorporeal light sources, probes, or sonoluminescence, and initiation of time reversal acoustics focused ultrasound to permit highly localized treatment. | 09-09-2010 |
Murray Gerwing, Edmonton CA
| Patent application number | Description | Published |
|---|---|---|
| 20100276954 | CAM ARM ACTUATED BACKUP TONG - Disclosed herein is a backup tong that comprises an activating mechanism for advancing a jaw die mounted on a jaw carrier within the backup into engagement with a pipe positioned centrally therein. The jaw carrier is fitted within the tong body to permit a sliding action radially toward the center point of the opening in the backup tong. Such mechanism includes a cam surface located along a first extension of a cam arm which pivots around a fixed pivot pin carried by the body of the backup. The other extension of the cam arm is connected toward its outer end to an actuator, anchored at one end to the backup body and oriented at the other end to swing the cam arm about the pivot pin. | 11-04-2010 |
| 20110041656 | REDUCED WEIGHT POWER TONG FOR TURNING PIPE - A power tong body having a central opening comprises upper and lower cover plates and a rotary gear contained there between. The tong incorporates the centering guide, e.g. rollers, that extend between the rotary gear and respective tong covers. Such centering guides through the central openings in the tong body covers and provide contact surfaces carried that permit differential rotation of the rotary gear with respect to such covers. The rollers may roll on circular races formed by the inside edge face surfaces of the tong covers bordering the central opening. The support rollers may also extend beyond the upper and lower cover plates and engage with a guide surface or race formed on the respective cage plates of the tong, centrally locating such cage plates with respect to the rotary gear while allowing differential rotation of the cage plates with respect to the rotary gear. | 02-24-2011 |
| 20110067533 | Internally Retained Jaw Roller Pin - A power tong jaw comprising a jaw body having upper and lower flange sections with flange apertures formed through the upper and lower flange sections. The power tong jaw will further have a jaw roller including a pin aperture and a roller pin positioned through the pin aperture in the jaw roller and through at least one of the upper or lower jaw flange apertures. The power tong jaw will further include a flexible retaining mechanism (i) positioned between outer surfaces of the upper and lower flange and (ii) engaging the roller pin. | 03-24-2011 |
Wolfram Gerwing, Hessigheim DE
| Patent application number | Description | Published |
|---|---|---|
| 20090171524 | Method and Device for Controlling a Drive Unit of a Vehicle - A method and a device for controlling a drive unit of a vehicle are provided in which, starting from the comparison of a first acceleration variable, which is calculated at least from the operating state of the drive unit, and a second acceleration variable, an error is detected. The second acceleration variable includes a first component, in the direction of the vehicle longitudinal axis, and a second component, perpendicular to the vehicle longitudinal axis. | 07-02-2009 |
| 20090183559 | Method for Ascertaining Individual-Cylinder Rotation Parameters of a Shaft of an Internal Combustion Engine - A method for operating an internal combustion engine in which a first rotation parameter is measured at a first end of a shaft of the internal combustion engine, and individual-cylinder rotation parameters are determined using the first rotation parameter. The method is characterized in that a second rotation parameter is measured at a second end of the shaft, and the individual-cylinder rotation parameters are determined using the first rotation parameter and the second rotation parameter. A control unit that controls the method is also presented. | 07-23-2009 |
| 20090320793 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - In a method for operating an internal combustion engine, in particular of a motor vehicle, the internal combustion engine is controlled by at least one drive variable, and an instantaneous torque output by the internal combustion engine is determined from a performance variable of the internal combustion engine that differs from the drive variable. | 12-31-2009 |