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. 26, 2008
Filed:
Jul. 28, 2004
Shiela Hamilton, Renfrewshire, GB;
Charles Jonathan Kennett, Bridge of Weir, GB;
Shiela Hamilton, Renfrewshire, GB;
Charles Jonathan Kennett, Bridge of Weir, GB;
Teknek Holdings Limited, Renfrewshire, GB;
Abstract
The invention relates to surface cleaning apparatus for removing contamination from sheet materials such as phototools and liquid crystal display (LCD) screens. The apparatus comprises a base unit having opposing walls for supporting a removable roller cartridge containing at least one cleaning roller and one adhesive roller. Progressive insertion of the roller cartridge into the base unit causes a camming mechanism provided on the base unit and the roller cartridge to interact so as to move the cleaning and adhesive rollers from a non-operatinig position in which the rollers are separated into an operating position in which the adhesive roller is brought into abutment with the cleaning roller. The apparatus is held in the operating position by a latching mechanism, for example, an electromagnet which may be selectively activated and deactivated simultaneously with activation and deactivation of a driving motor. The features of the invention ensure that the transferring of adhesive from the adhesive roller to the cleaning roller is automatically prevented when the rollers are stationary, even in the event of a power failure.