公开(公告)号：US5853281A

公开(公告)日：1998-12-29

申请号：US767273

申请日：1996-12-16

Applicant: Mervin Blair Farmer

Inventor： Mervin Blair Farmer

IPC: B65G39/07 ,  B65G69/28 ,  B65G67/02

CPC classification number: B65G69/30 ,  B65G39/07

Abstract: A ramp is used for loading and unloading recreational vehicles, especially snowmobiles, trucks, trailers and the like. The preferred ramp is a three section ramp with two outer sections and a center section connected to fold from side to side for storage and transport purposes. Each outer ramp section is equipped with a series of rollers spaced along the ramp section to allow the skis of a snowmobile to advance along the ramp without binding. The rollers are preferably made with a rigid core and a rotating outer sleeve of PVC. The tubing is slit helically from end to end so that it can be removed and installed without dismantling the ramp. The center section of the ramp is equipped with lateral cleats.

Abstract translation: 斜坡用于装卸游乐车，特别是雪地车，卡车，拖车等。 优选的斜坡是具有两个外部部分的三段斜面，并且连接成从一侧到另一侧折叠的中心部分用于存储和运输目的。 每个外斜坡部分配备有沿着斜坡部分间隔开的一系列辊，以允许雪地车的滑雪板沿着坡道前进而不绑定。 辊优选地由刚性芯和PVC的旋转外套制成。 管子从一端到另一端是螺旋状的，这样就可以拆卸和安装，而不需要拆卸斜坡。 坡道的中心部分配有侧向防滑板。