发明名称 Foldable hay rake
摘要 A foldable hay rake has two rake arms comprised of first and second rake arm structures with rake wheels thereon pivotally secured to a base frame to pivot in a vertical plane. A center rake arm structure is pivotally associated with the base frame with a center rake arm frame located adjacent a rearward end of the base frame between the first and second rake arm structures. At least one of the hay rake wheels has a plurality of teeth extending therefrom with a tooth spacing between adjacent teeth of less than five inches and an outer diameter greater than 60 inches. A castor wheel is pivotally attached to the outer end of the main support frame, with an axle dampener operationally associated with the castor wheel to dampen wobbling of the castor wheel.
申请公布号 US2006032631(A1) 申请公布日期 2006.02.16
申请号 US20040985232 申请日期 2004.11.10
申请人 ROWSE HYDRAULIC RAKES CO., INC. 发明人 ROWSE DAN D.;ROWSE RODNEY D.
分类号 E21B43/16 主分类号 E21B43/16
代理机构 代理人
主权项
地址