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US Patent 5807021 - Ground cover mat manufactured from recycled plastic
US Patent Issued on September 15, 1998
Estimated Patent Expiration Date:
November 29, 2015Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
November 29, 2015Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractThe present invention provides a ground cover mat that protects the terrain from a vehicle or the like. The ground cover mat is manufactured by molding recycled polyethylene plastic into a sheet-like mat, which is inexpensive, relatively light in weight, durable in harsh conditions and easy to cut. The ground cover mat includes a pattern of lugs on its upper and lower surfaces to provide a traction surface for the vehicle and to provide friction between the terrain and the ground cover mat. | InventorApplicationNo. 564590 filed on 11/29/1995US Classes:404/19, Anti-slip surface52/177, SPECIFIED WEAR OR FRICTION-TYPE TRAFFIC-CARRYING SURFACE238/14, Traction mats404/35, Portable mat typeD25/163Textured (e.g., pitted, cratered, drilled, etc)Field of Search404/19, Anti-slip surface404/35, Portable mat type404/36, Foraminous traffic surface404/44, Composite or compound428/156, Including variation in thickness428/213, Thickness (relative or absolute)D25/163, Textured (e.g., pitted, cratered, drilled, etc)D25/157, Symmetrical pattern or pattern unit (28)D25/158, Three or more repeats, or uniform configuration, about axisD25/159, Consisting entirely of material having uniform thickness238/14, Traction mats52/177SPECIFIED WEAR OR FRICTION-TYPE TRAFFIC-CARRYING SURFACEExaminersPrimary: Lisehora, James A.Attorney, Agent or FirmUS Patent ReferencesD95158, D140623, D342330, 937415, 2975977, 3268384, 3701474, 3836075, 3997110, Anti-slipping accessory for traction wheelIssued on: 12/14/1976 Inventor: Aumont4111585, Module and modular support for turfgrass and like areas Issued on: 09/05/1978 Inventor: Mascaro4133481, Anti-skid device for vehicles Issued on: 01/09/1979 Inventor: Bennett4478901, Floor mat construction Issued on: 10/23/1984 Inventor: Dickens , et al.4572700, Elongated bendable drainage mat Issued on: 02/25/1986 Inventor: Mantarro , et al.4596731, Grass protecting walkway grid Issued on: 06/24/1986 Inventor: Cudmore , et al.4629358, Prefabricated panels for rapid runway repair and expedient airfield surfacing Issued on: 12/16/1986 Inventor: Springston , et al.4787556, Grip plate Issued on: 11/29/1988 Inventor: Heisson4998670, Traction mat Issued on: 03/12/1991 Inventor: Peterson5250340, Mat for stabilizing particulate materials Issued on: 10/05/1993 Inventor: Bohnhoff5439171, Traction mat for vehicles Issued on: 08/08/1995 Inventor: Fruend5499888, Bidirectional roadway for wheeled vehicles Issued on: 03/19/1996 Inventor: Hawkes5538183Vehicle traction mat Issued on: 07/23/1996 Inventor: McGee Foreign Patent References
International ClassB60B 039/12 |
