| 摘要 |
691,632. Vehicle wheels. BURNS, S.W. Feb. 14, 1952 [Feb. 16, 1951], No. 3801/51. Class 144 (i). To prevent complete removal of a hub-cap 5, normally secured by a centre-screw 6, a flexible connector such as a helical spring 11 is fitted between one of the wheel-attachment bolts 3 and a setscrew 8 threaded into the cap.
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