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. 05, 1997
Filed:
Mar. 20, 1995
Kim Kwee Ng, Selden, NY (US);
Other;
Abstract
A device for removing sand, solid particulate wastes and the like from a surface being cleaned, comprising spade-shaped members driven in a closed rotatory circuit cooperating with a brush in synchronized sweeping motion. In a first embodiment, a rotatory belt mounting a plurality of circumferentially spaced apart spade-shaped collector elements cooperates to receive material swept by a single brush in pendulum arcuate motion and then elevates the waste for deposit into a storage container for later disposal. In a second embodiment, the sweeping action is provided by the reciprocating motion of a first rotational belt mounting a plurality of transverse, circumferentlally spaced-apart rows of brushes and the receiving and elevating is done by a second belt mounting an array of circumferentially spaced-apart spade-shaped collector elements. The first belt and the second belt are driven in counter rotational senses in pre-defined circuits while the first belt is translocated in synchronized reciprocating motion towards and away from the second belt. A stored program device means is provided for synchronizing and controlling both the spade-shaped collector elements and the brushes for removing sand and debris off roadways and the like.