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:
Jun. 13, 1989
Filed:
May. 12, 1982
Applicant:
Inventors:
Stephen E Clark, Norfolk, VA (US);
Earl A Clark, Norfolk, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02B / ; E02D / ; A47K / ;
U.S. Cl.
CPC ...
405 52 ; 405270 ; 405303 ; 52 20 ; 404-2 ; 404 25 ; 210163 ; 4293 ;
Abstract
An elastomeric sealing device to prevent ingress of surface fluids into holes, principally drains which are characterized by non-watertight covers or grilles with either regular or irregular topographic boundaries. The device comprises a three-part construction, including a top film, a core elastomer having minimal shear strength, and a bottom film. When in use, the device conforms to contour of adjacent hole covering device and fills existing crevices and voids, thereby providing an efficient seal. When removed from hole, device recovers neutral shape thereby being suitable for re-use on same or different hole.