Joints and connections – Articulated members – Lockable at fixed position
Patent
1976-03-05
1977-06-28
Kundrat, Andrew V.
Joints and connections
Articulated members
Lockable at fixed position
403322, F16B 710
Patent
active
040322408
ABSTRACT:
Telescopic device includes a plurality of elongated members disposed one within the other in a fully telescoping condition thereof and including an innermost member, an outermost member and at least one member intermediate thereto, the members being displaceable in longitudinal direction relative to one another in a predetermined sequence, stop means for limiting travel of the members relative to one another, the at least one intermediate member being formed at a wall region located at one end thereof with a recess penetrating therethrough, a locking member disposed in the recess and having a dimension greater than the thickness of the wall region, one of the innermost and outermost members being formed with a depression at the end thereof located, in the fully telescoping position of the members, adjacent the other end of the elongated intermediate member, the locking member, in an extended condition of the intermediate member with respect to the one of the innermost and outermost members, being partly receivable in the depression, a projection extending from the other of the innermost and outermost members, at an end thereof located adjacent to the one end of the intermediate member in the fully telescoping position of the members, the projection partly surrounding the locking member, and blocking means associated with the locking member at one side of the projection, the blocking means being engageable with the locking members for holding the same in a blocked position located at one side of the wall region of the intermediate member.
REFERENCES:
patent: 2719688 (1955-10-01), Seifert
patent: 3107109 (1963-10-01), Tindale
Hoger Ernst
Reinhardt Horst
Kraftwerk Union Aktiengesellschaft
Kundrat Andrew V.
Lerner Herbert L.
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