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:
Mar. 31, 1998
Filed:
Aug. 12, 1996
Applicant:
Inventor:
Steven D Jacob, Crystal Lake, IL (US);
Assignee:
Landis & Staefa, Inc., Buffalo Grove, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
454 56 ; 454 61 ;
Abstract
Apparatus for monitoring the speed of movement of at least one sash door of a laboratory fume hood is disclosed. The speed of movement of a sash door is detected and an alarm signal is generated if the speed of movement exceeds a predetermined value while increasing the size of the uncovered opening of the fume hood.