Invention Grant
- Patent Title: Ladder and support stand
- Patent Title (中): 梯子和支架
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Application No.: US12845422Application Date: 2010-07-28
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Publication No.: US08381873B2Publication Date: 2013-02-26
- Inventor: Mark Cross , Eric Primeau
- Applicant: Mark Cross , Eric Primeau
- Applicant Address: US MI Troy
- Assignee: Affinity Tool Works
- Current Assignee: Affinity Tool Works
- Current Assignee Address: US MI Troy
- Agency: Dickinson Wright PLLC
- Main IPC: E06C1/39
- IPC: E06C1/39 ; E04G1/00

Abstract:
A convertible ladder and scaffold assembly includes a plurality of uprights and a plurality of beams each extending from one of the uprights. A plurality of hinges each hingedly connect one of the uprights to one of the beams about a rotational axis (AR) to provide an assembly having ladder, scaffold, push-cart, and storage configurations. Each of the hinges defines catches and present a stop releasably engaging catches for preventing rotation about the rotational axis (AR). At least one lever bar releasably engages a plurality of the stops for simultaneously releasing a plurality of the stops from engaging catches. Each of the lever bars have a plurality of lever sections for providing leverage to disengage the stops from the catches. Each of the lever bars has a grip section interconnecting the lever sections for simultaneously releasing a plurality of the stops from engaging the catches.
Public/Granted literature
- US20110056764A1 LADDER AND SUPPORT STAND Public/Granted day:2011-03-10
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