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:
Feb. 06, 2001
Filed:
Apr. 03, 2000
Henry Ping Chang, San Marino, CA (US);
Other;
Abstract
A peeling apparatus for removing surface portions of human tissue by superficial abrasion caused by a stream of a mixture of air with at least one granular abrasive substance striking on the surface portion of the human tissue to be removed, wherein the peeling apparatus includes a purging arrangement includes a first and a second switch. The first switch includes a control switch valve connected at the first air dust, for regulating the compressed air flowing from the air filtering outlet member of the collection reservoir to the suction pump normally, and being selectively switched to cut off the connection between collection reservoir and the air inlet of the suction pump while instantaneously connecting the air outlet of the suction pump to the air filtering outlet member instead, so as to deliver the air output from the air outlet of the suction pump reversely to the air filtering outlet member for purging a clogged condition thereof The second switch is adapted for normally ensuring the air outlet of the suction pump connected to outside and selectively switching to instantaneously connect the air outlet of the suction pump to the fresh substance outlet member of the abrasive substance supply so as to deliver the air output from the air outlet of the suction pump reversely to the fresh substance outlet member for purging a clogged condition thereof.