| US 7,548,568 B2 | ||
| Portable laser device | ||
| Valentin A. Gruzdev, Moscow (Russian Federation); and Pavel V. Efremkin, Ardsley, N.Y. (US) | ||
| Assigned to Innotech USA Inc., Tarrytown, N.Y. (US) | ||
| Filed on Oct. 19, 2007, as Appl. No. 11/975,572. | ||
| Application 11/975572 is a division of application No. 10/970870, filed on Oct. 22, 2004, granted, now 7,298,767. | ||
| Application 10/970870 is a division of application No. 10/202325, filed on Jul. 24, 2002, granted, now 6,813,289. | ||
| Claims priority of provisional application 60/307628, filed on Jul. 25, 2001. | ||
| Prior Publication US 2008/0043790 A1, Feb. 21, 2008 | ||
| Int. Cl. H01S 3/04 (2006.01) | ||
| U.S. Cl. 372—35 [372/34; 372/36; 165/87] | 10 Claims |
| 1. A cooling arrangement for a hand-held laser device, comprising:
a laser emitter formed by at least a laser rod and an exciting lamp spaced from each other;
a jacket defined by at least spaced from each other exterior and interior walls thereof, a longitudinal opening extending
through said jacket and defined by said interior wall, said longitudinal opening being adapted to rotatably receive said laser
rod; and
a continuous internal spiral groove formed within a body of said jacket at said interior wall, so as to provide positive displacement
of a cooling fluid within said internal groove about an outer periphery of said laser rod during rotation of said jacket about
said laser rod.
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