Wheel substitutes for land vehicles – Endless belt having nonmetallic track or tread – Track formed of endless flexible belt
Reexamination Certificate
2006-05-19
2010-06-22
Stormer, Russell D (Department: 3617)
Wheel substitutes for land vehicles
Endless belt having nonmetallic track or tread
Track formed of endless flexible belt
C305S165000
Reexamination Certificate
active
07740326
ABSTRACT:
The present invention provides a crawler in which, due to alteration of a shape of rubber projections which mesh with a sprocket, even when earth, sand and the like has been deposited at an inner peripheral surface of the crawler, damage to the concerned rubber projections will not be incurred. It is a core-less crawler track at an inner peripheral surface of which rubber projections for driving are formed with a certain pitch. In side view, the rubber projections form a substantially triangular shape provided with a drive side inclination surface Pa and a brake side inclination surface Pb. The inclination surfaces of this rubber projection are divided into the drive side inclination surface Pa and the brake side inclination surface Pb. Steps D are formed at both the inclination surfaces. Base side (bottom step) inclination angles X are set with an inclination angle XB of a brake side inclination surface Pba larger than an inclination angle XA of a drive side inclination surface Paa, and top side (top step) inclination angles Y are set with an inclination angle YA of a drive side inclination surface Pab larger than an inclination angle YB of a brake side inclination surface Pbb.
REFERENCES:
patent: 5984438 (1999-11-01), Tsunoda et al.
patent: 6000766 (1999-12-01), Takeuchi et al.
patent: 6139121 (2000-10-01), Muramatsu
patent: 6193335 (2001-02-01), Edwards
patent: 6609772 (2003-08-01), Musselman et al.
patent: 7114788 (2006-10-01), Deland et al.
patent: 7156474 (2007-01-01), Safe et al.
patent: 2004/0135433 (2004-07-01), Inaoka et al.
patent: 2 407 015 (2004-04-01), None
patent: 2 533 344 (2006-08-01), None
patent: 1 437 292 (2004-07-01), None
patent: 06072362 (1994-03-01), None
patent: 9-193852 (1997-07-01), None
patent: 2000-53038 (2000-02-01), None
patent: 2000-72057 (2000-03-01), None
patent: 2004-98793 (2004-04-01), None
patent: 2004-216992 (2004-08-01), None
European Search Report dated Jun. 30, 2009.
Matsuo Shuichi
Sugihara Shingo
Uchida Shinji
Bridgestone Corporation
Stormer Russell D
Sughrue & Mion, PLLC
LandOfFree
Core-less crawler track and rubber projections therefore does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Core-less crawler track and rubber projections therefore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Core-less crawler track and rubber projections therefore will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4193842