Letter and the like having a self-adjusting orbital pin-mount for installing the letter

作者: Jerome Rosenberg

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摘要: A letter and the like having a self-adjusting orbital pin-mount for installing on walls other surfaces, comprises first member secured to extending rearwardly therefrom, an angularly laterally yieldable spring engaged at one end thereof member, second of whereby thus automatically aligns itself both misaligned holes in or surfaces which is be mounted, preventing stress damage event mounting holes.

参考文章(4)
Ralph A Burzenski, Spring type exercisers ,(1966)
Robert J Slavsky, Movable merchandise indicator ,(1961)
Howard C. Menges, Sign and fixture therefor ,(1959)