发明名称 NON-MOTORIZED VEHICLE WHEEL REPLACEMENT TREADS AND METHODS
摘要 <p>A wheel for a non-motorized vehicle (e.g., a shopping cart) can include a housing assembly and a tread assembly. The housing assembly can be configured to sealingly house electronics or other components. The tread assembly can removably mate with the housing assembly such that the electronics or other components remain closed and/or sealed within the housing assembly when the tread assembly is mated or unmated with the housing assembly.</p>
申请公布号 WO2013043916(A2) 申请公布日期 2013.03.28
申请号 WO2012US56406 申请日期 2012.09.20
申请人 GATEKEEPER SYSTEMS, INC. 发明人 HANNAH, STEPHEN, E.;MCKAY, JOHN, C.
分类号 B60B33/02;B60B7/06;B60B21/02;B60B33/04 主分类号 B60B33/02
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