公开(公告)号：US6109392A

公开(公告)日：2000-08-29

申请号：US393222

申请日：1999-09-09

Applicant: Harry G. Merrick

Inventor： Harry G. Merrick

IPC: E06C7/16

CPC classification number: E06C7/16

Abstract: A split platform ladder stand is described for releasable attachment between selected adjacent upper and lower treads on a conventional ladder. The stand includes a first platform having a first user support surface and a bottom lower tread engagement surface. A stabilizer extends upwardly from the first platform to a stabilizer yoke having an upper tread engagement surface. A second platform has a second user support surface mounted for selective adjustment in relation to the first platform. The second platform is movable between an operative position wherein the second user support surface is substantially coplanar with the first user support surface, and an inoperative position wherein the second user support surface is positioned angularly toward the stabilizer.

Abstract translation: 描述了一个分离式平台梯架，用于可拆卸地安装在常规梯子上相邻的上下踏板之间。 支架包括具有第一使用者支撑表面和底部下部胎面接合表面的第一平台。 稳定器从第一平台向上延伸到具有上胎面接合表面的稳定器轭。 第二平台具有安装用于相对于第一平台进行选择性调整的第二用户支撑表面。 第二平台可在其中第二使用者支撑表面与第一使用者支撑表面基本共面的操作位置和不工作位置之间移动，其中第二使用者支撑表面成角度地朝向稳定器定位。

公开(公告)号：US4981195A

公开(公告)日：1991-01-01

申请号：US415035

申请日：1989-09-29

Applicant: Harry G. Merrick

Inventor： Harry G. Merrick

IPC: E06C1/38 ,  E06C9/02

CPC classification number: E06C1/381 ,  E04F11/0201 ,  E06C9/02

Abstract: An alternating tread ladder apparatus and an associated tread step bracket are disclosed. The apparatus comprises an elongated central tread support for mounting between a upper level and a lower level at some predetermined forward angle of inclination. The tread support is provided with a plurality of generally laterally oriented tread support apertures positioned therealong and extending therethrough. The preferred embodiment tread step brackets are comprised of angled Z-shape. The upper arm of the Z is longer than the lower arm, and entends through one of the apertures in the central tread support.

Abstract translation: 公开了一种交替的踩踏踏板装置和相关的踏板踏架。 该装置包括细长的中心胎面支撑件，用于以某种预定的前倾角安装在上层和下层之间。 胎面支撑件设置有多个大致侧向定向的胎面支撑孔，其定位在其上并延伸穿过其中。 优选实施例的胎面踏板支架由成角度的Z形构成。 Z的上臂比下臂长，并且穿过中央胎面支撑件中的一个孔。

公开(公告)号：US5125476A

公开(公告)日：1992-06-30

申请号：US760885

申请日：1991-09-16

Applicant: Harry G. Merrick

Inventor： Harry G. Merrick

IPC: E06C1/38 ,  E06C9/06

CPC classification number: E06C1/381 ,  E04F11/0201 ,  E06C1/38 ,  E06C9/06

Abstract: A ladder apparatus comprising a longitudinally elongated step support for mounting between an upper level and a lower level at a forward angle of inclination. The elongated support has an upper end and a lower end. A series of steps are mounted relative to the elongated support. A hinge assembly is mounted relative to the elongated support adjacent its upper end. The hinge assembly includes a pivot positioned adjacent one of the outer longitudinal edges enabling the ladder apparatus to be swung at least about 90.degree. between an operable position and a stowed position. The hinge assembly preferably comprises retaining means for inhibiting the ladder apparatus from swinging away from the operable position.

Abstract translation: 一种梯形装置，包括纵向细长的台阶支撑件，用于以前倾角安装在上层和下层之间。 细长的支撑件具有上端和下端。 相对于细长的支撑件安装一系列步骤。 铰链组件相对于靠近其上端的细长支撑安装。 铰链组件包括邻近外部纵向边缘之一定位的枢轴，使得梯形装置能够在可操作位置和收起位置之间摆动至少约90度。 铰链组件优选地包括用于阻止梯子装置摆脱远离操作位置的保持装置。