公开(公告)号：US3672421A

公开(公告)日：1972-06-27

申请号：US3672421D

申请日：1970-05-15

Applicant: RESEARCH INC

Inventor： ANDERSON JAMES R

IPC: B60C11/16

CPC classification number: B60C11/1612 ,  Y10T152/10279

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.

公开(公告)号：US3329804A

公开(公告)日：1967-07-04

申请号：US29680863

申请日：1963-07-22

Applicant: RESEARCH INC

Inventor： ANDERSON JAMES R ,  WILDE HERBERT J

IPC: G06K11/00

CPC classification number: G06K11/00

公开(公告)号：US3060332A

公开(公告)日：1962-10-23

申请号：US81216359

申请日：1959-05-11

Applicant: RESEARCH INC

Inventor： ANDERSON JAMES R ,  ABRAMSON ANDREW E

IPC: G05B19/12

CPC classification number: G05B19/122 ,  G05B2219/23202 ,  G05B2219/23421

公开(公告)号：US2941135A

公开(公告)日：1960-06-14

申请号：US79340059

申请日：1959-02-16

Applicant: RESEARCH INC

Inventor： ANDERSON JAMES R

IPC: G05B19/12

CPC classification number: G05B19/122 ,  Y10T409/30084