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:
Apr. 28, 2008
Filed:
Mar. 14, 2004
Jim Hunter, Overland Park, KS (US);
Kevin Gilkison, Overland Park, KS (US);
Larry Nelson, Kingsville, MO (US);
Burt Rhea, Overland Park, KS (US);
Jerry O'dell, Independence, MO (US);
Greg Krueger, Trimble, MO (US);
Gary Roepke, Kansas City, MO (US);
Gerhard W. Knutson, Edina, MN (US);
Mary Ellen Kennedy, Ashton, CA;
Jim Hunter, Overland Park, KS (US);
Kevin Gilkison, Overland Park, KS (US);
Larry Nelson, Kingsville, MO (US);
Burt Rhea, Overland Park, KS (US);
Jerry O'Dell, Independence, MO (US);
Greg Krueger, Trimble, MO (US);
Gary Roepke, Kansas City, MO (US);
Gerhard W. Knutson, Edina, MN (US);
Mary Ellen Kennedy, Ashton, CA;
Labconco Corporation, Kansas City, MO (US);
Abstract
A biological safety cabinet is provided that includes a frame. The frame defines a protected work area and encloses the work area on all but one side. A sash is coupled to the frame that at least partially encloses the side that is not enclosed by the frame. A blower is coupled to the frame generally above the work area. The blower is adapted to circulate air through the work area to make the work area a negative pressure area so that harmful materials are confined. A sash grill is coupled to the frame generally below the sash that has a curved top surface. The curved sash grill provides a superior and less turbulent air-flow into the work area, thereby better containing any harmful materials. The curved sash grill is perforated, and the curvature and perforations of the sash grill compensate for partial blockage by such things as the user's arms and other objects. The curvature of the sash grill also avoids a sharp angle at the same height as the work surface which reduces the chance of contact and possible breakage of labware as it is moved into the cabinet.