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Extensible support leg

  • US 3,164,351 A
  • Filed: 01/08/1962
  • Issued: 01/05/1965
  • Est. Priority Date: 01/08/1962
  • Status: Expired due to Term
First Claim
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1. IN AN EXTENSIBLE LEG STRUCTURE WHEREIN UPPER AND LOWER TUBULAR LEG SECTION HAVE ADJACENT ENDS DISPOSED IN VERTICALLY OVERLAPING TELESCOPING RELATION AND CONSTITUTING OUTER AND INNER LEG SECTIONS, THE OUTER LEG SECTION HAVING A SERIES OF WALL OPENINGS SPACED THEREALONG, A RIGID POPPET ELEMENT MOVABLY MOUNTED IN AN INTERMEDIATE WALL OPENING OF THE INNER SECTION, AND A TUBULAR SLEEVE OF RESILIENTLY YIELDABLE MATERIAL DISPOSED IN SNUG FIT RELATION IN SAID INNER SECTION IN REGISTER WITH SAID WALL OPENING THEREOF TO NORMALLY BIAS SAID POPPET ELEMENT TO PROJECT PARTIALLY OUTWARDLY THEREOF FOR ENGAGEMENT WITH ANY ONE OF THE WALL OPENINGS OF SAID OUTER SECTION, SAID TUBULAR SLEEVE BEING YIELDABLE UPON MANUALLY FORCING SAID POPPET ELEMENT INWARDLY THEREAGAIST TO ACCOMMODATE INWARD MOVEMENT OF THE POPPET ELEMENT OF SUFFICIENT EXTENT TO DISENGAGE THE OUTER SECTION AND PERMIT RELATIVE SLIDING MOVEMENT BETWEEN SAID SECTIONS.

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