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:
Jun. 21, 1994
Filed:
Dec. 14, 1992
Applicant:
Inventors:
Michael I Lerner, Boston, MA (US);
Michael S Bernstein, Natick, MA (US);
James D Hammer, Quincy, MA (US);
Assignee:
Safety 1st, Inc., Chestnut Hill, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; A61J / ;
U.S. Cl.
CPC ...
116208 ; 116200 ; 606234 ;
Abstract
A wear indicator for a latex product having an underlying latex structure comprises an outer layer positioned over the latex structure. The outer layer comprises latex having a particulate filler for establishing pores in the layer and a soluble colorant that leaches out of the pores. The leaching of colorant is simulative of wear of the latex product since leaching of the colorant occurs through degrading environmental exposure.