DANIEL N BLACK III
Electrical Contractor in Wayne, PA
License number
New Jersey 34EI00483900
Issued Date
Jan 7, 1973
Category
Electrical Contractors
Type
Electrical Contractor
Address
Address
Wayne, PA
Professional information
Resilient Paving Composition For Playfields Sports Fields And Recreation Areas
US Patent:
4564310, Jan 14, 1986
Filed:
Jun 8, 1984
Appl. No.:
6/618495
Inventors:
Edmund Thelen - Strafford PA
Daniel N. Black - Radnor PA
Thomas L. Kiley - Wilmington DE
Daniel N. Black - Radnor PA
Thomas L. Kiley - Wilmington DE
International Classification:
E01C 502, E01C 518, E01C 522
US Classification:
404 31
Abstract:
A porous resilient paving system for use on well-drained soil as a playing surface is described as having
(1) a soil-covering layer consisting essentially of mineral aggregate having a thickness in the range of from about 2 to about 4 inches;
(2) a layer of fibrous vulcanized rubber particles covering layer (1), said layer (2) having a thickness in the range of from about one-half to about two inches;
(3) a core composition layer covering layer (2) consisting essentially of a matrix formed from about 70 to 87 weight percent vulcanized rubber fibers bonded with from about 13 to 30 weight percent of a rubber latex selected from the group consisting of natural rubber latex and synthetic rubber latex; and
(4) a topping layer covering layer (3) consisting essentially of from about 68-74 weight percent vulcanized rubber particles of from about 12-30 mesh, zinc oxide in an amount from about 1-7 weight percent and bonded with about 25 weight percent of a rubber latex.