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:
Sep. 11, 1984
Filed:
Aug. 30, 1982
David R Williams, Dallas, TX (US);
Wynfor Corporation, Dallas, TX (US);
Abstract
A portable system (10) for abrading the floor of a bathtub (26) to render it slip resistant. The system contains a portable power unit (12) containing an air compressor providing compressed air to abrading unit (14) via compressed air hose (20) and provides a source of electrical power to an abrading unit (14) via a power cable (18). The abrading unit (14) is adapted to direct a high velocity stream of abrasive particles against the floor of a bathtub through perforations in a particle impervious template (24). The unit (14) which is adapted to travel in the forward direction (indicated by the arrow), has a carriage movable in a direction lateral to the direction of forward travel. An abrading head (38) is supported by and reciprocally movable with a carriage to apply the particle stream in a direction lateral to the direction of forward travel and normal to the bathtub surface. A vacuum unit (16) is connected to a filter-hopper (40) mounted on top of the abrading unit for exhausting spent abrasive particles, filtering them and recycling them for further use. A control mechanism is provided for selectively advancing the unit in a forward direction or causing the abrading head to reciprocally traverse the unit in response to the location of perforations in the template.