The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2009
Filed:
May. 17, 2007
Jason J. LI, Boxford, MA (US);
Harold Rothwell, Jr., Hopkinton, NH (US);
David M. Hrubowchak, Lithcfield, NH (US);
Jason J. Li, Boxford, MA (US);
Harold Rothwell, Jr., Hopkinton, NH (US);
David M. Hrubowchak, Lithcfield, NH (US);
Osram Sylvania Inc., Danvers, MA (US);
Abstract
A PAR lamp () has a body () with an internal reflector surface () disposed about a longitudinal axis (). A cavity () is provided at one end () of the body () and an arc discharge tube () that provides a substantially spherical light source is positioned in the cavity () and disposed on the longitudinal axis (). A cover receiving opening () is provided at a second end () of the body and a cover () closes the cover receiving opening (). A plurality of spiral facets () is formed on the internal reflector surface (), the plurality of spiral facets () being sufficient in number to increase the maximum beam candle power and decrease the beam angle when compared to faceted lamps having a lesser number of facets. The number of facets is equal to or greater than 75 and preferably is 100.