发明名称 Sway control hitch
摘要 A trailer hitch system for equalizing trailer loads and reducing trailer sway. The trailer hitch system may include spring bars that may be attached to a hitch head using a trunnion style connection. The spring bars may be attached to the trailer using rigid brackets that reduce swinging of the spring bars. The rigid brackets may include an upward extending portion for attaching to the trailer tongue, and a lateral extending portion for receiving the spring bars thereupon. The brackets may have a contact surface on the lateral extending portion that may be free from a coating such that a metal on metal contact is made between the spring bars and the brackets. Portions of the brackets beyond the contact surface may be covered with a protective coating.
申请公布号 US8833789(B2) 申请公布日期 2014.09.16
申请号 US200711895289 申请日期 2007.08.23
申请人 Progress Mfg. Inc. 发明人 Anderson Jed K.
分类号 B60D1/32;B62D53/04;B60D1/06;B60D1/34 主分类号 B60D1/32
代理机构 Clayton, Howarth & Cannon, P.C. 代理人 Clayton, Howarth & Cannon, P.C.
主权项 1. A trailer hitch system comprising: a spring bar for joining with a hitch head and exerting a force on said hitch head; and a bracket for joining said spring bar to a trailer; wherein said bracket comprises a contact surface integral with said bracket, said contact surface forming part of a means for providing a differential coefficient of friction on said bracket; wherein said means for providing a differential coefficient of friction further comprises a coating on said bracket, wherein said bracket comprises a support having an upward extending portion being adjustably attachable to said trailer, a lateral extending portion for receiving said spring bar thereupon, and a curved transition portion interposed between the upward extending portion and the lateral extending portion; wherein said upward extending portion, said lateral extending portion and said curved transition portion are integrally interconnected; wherein said contact surface is integrally part of said lateral extending portion of said support, said contact surface having an inner boundary and a outer boundary, wherein the inner boundary is spaced apart from said outer boundary; wherein said coating extends along the upward extending portion and through the curved transition portion and along the lateral extending portion; and wherein said coating terminates at the inner boundary of the contact surface and resumes at the outer boundary of the contact surface such that said contact surface is characterized by an absence of said coating.
地址 Provo UT US