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. 30, 2002
Filed:
Sep. 15, 2000
Applicant:
Inventor:
Sanford F. Campbell, Redding, CA (US);
Assignee:
Letro Products, Inc., Redding, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
E04H 4/16 ;
U.S. Cl.
CPC ...
E04H 4/16 ;
Abstract
An apparatus for cleaning a surface of a pool submerged in a liquid. The apparatus comprises an elongated cleaning body adapted to migrate across said surface and having a top portion and a bottom portion, a track positioned at the top of the cleaning body, and a ball bearing weight member sealed in the track and having the ability to roll from the first end of the track to the second end of the track.