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    • 1. 发明授权
    • Knock-down open riser stairway
    • 敲门打开立管楼梯
    • US4106591A
    • 1978-08-15
    • US787089
    • 1977-04-13
    • Allen CohenHoward CohenRonald Cohen
    • Allen CohenHoward CohenRonald Cohen
    • E04F11/028E04F11/12
    • E04F11/028
    • A stairway capable of being shipped in a knock-down condition and erected with a minimum of labor and without special tools is disclosed. The stairway comprises a square tubular elongated support member having mounting brackets at each end enabling it to be mounted in inclined relation between different levels of a structure. A plurality of step assemblies are clamped in spaced relation onto the support member. Each step assembly includes a tread support having a horizontal load bearing portion and an angulated integral strut portion both fastened to a mounting flange which engages the topside of the support member. A locking sleeve surrounds the bottom and side walls of the support member and has outturned flanges which are fastened to the mounting plate by bolts. In one embodiment, the bottom of the locking sleeve has a slight upward convexity which flexes elastically when the bolts are tightened to maintain clamping pressure against the support member. In another embodiment the bottom of the locking sleeve engages flush against the bottom of the support member and the locking sleeve flanges are spaced from the mounting flange and flexed to provide the clamping action.
    • 公开了能够以击倒状态运输并且以最少劳动力并且没有专用工具架设的楼梯。 楼梯包括一个方形管状细长的支撑件,每个端部都有安装支架,使其能够以不同层次的结构之间的倾斜关系安装。 多个台阶组件被间隔地夹紧在支撑构件上。 每个步骤组件包括具有水平承载部分和角度一体的支柱部分的胎面支撑件,两者均固定到与支撑构件的顶侧接合的安装凸缘。 锁定套筒围绕支撑构件的底壁和侧壁,并且具有通过螺栓紧固到安装板的翻转凸缘。 在一个实施例中,锁定套筒的底部具有稍微向上的凸起,当螺栓被紧固时,该弹性弹性地弯曲以保持对支撑构件的夹持压力。 在另一个实施例中,锁定套筒的底部与支撑构件的底部相接合,并且锁定套筒凸缘与安装凸缘间隔开并弯曲以提供夹紧动作。
    • 8. 发明申请
    • Locking mechanism for a folding chair
    • 折叠椅的锁定机构
    • US20070029846A1
    • 2007-02-08
    • US11332528
    • 2006-01-12
    • Ronald Cohen
    • Ronald Cohen
    • A47D1/02
    • A47C4/20
    • A folding chair including a seat frame, a leg frame hinged to the seat frame, a hinge mechanism between the seat frame and the leg frame, a quick-release locking mechanism for releasably locking the seat frame with respect to the leg frame, and a supplemental locking mechanism including an orifice in one of the seat frame and the leg frame, an opening in the hinge mechanism aligned with the orifice when the chair is unfolded, and a fastener extending through the opening in the hinge mechanism and into the orifice to secure the seat frame to the leg frame.
    • 一种折叠椅,包括座椅框架,铰接到座椅框架的腿架,座椅框架和腿部框架之间的铰链机构,用于相对于腿部框架可释放地锁定座椅框架的快速释放锁定机构,以及 补充锁定机构,包括在座椅框架和腿架之一中的孔口,当椅子展开时,铰链机构中的孔与孔口对准,以及紧固件,其延伸穿过铰链机构中的开口并进入孔口以固定 座椅框架到腿架。