Invention Grant
US3672421A Snow tire with retractable studs 失效
具有可退回条件的雪橇轮胎

  • Patent Title: Snow tire with retractable studs
  • Patent Title (中): 具有可退回条件的雪橇轮胎
  • Application No.: US3672421D
    Application Date: 1970-05-15
  • Publication No.: US3672421A
    Publication Date: 1972-06-27
  • Inventor: ANDERSON JAMES R
  • Applicant: RESEARCH INC
  • Assignee: Research Inc
  • Current Assignee: Research Inc
  • Priority: US3774570 1970-05-15
  • Main IPC: B60C11/16
  • IPC: B60C11/16
Snow tire with retractable studs
Abstract:
A tire, particularly for operation in icy conditions which has studs that are mounted so they can be retracted or extended pneumatically without changing the external configuration or shape of the tire, and can be extended without utilizing any external pressure sources.
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