Telescoping member methods and apparatus
In at least one embodiment, an apparatus ( 1 ) that comprises a compression sleeve element ( 2 ) established at least partially around portions of a first elongated member ( 6 ) that telescopes from a larger elongated member ( 8 ) in which it may nest. A relative motion obstruction element ( 4 ) may disallow only certain types of motion, e.g., rotational and axial, of the compression sleeve element relative to the elongated members around which it may be at least partially established. As it may be the compression enhancement element ( 3 ) —which may be used to generate a retaining compression force element—that prevents perpendicular displacement of the compression sleeve element, deactivation and effective disengagement of the compression enhancement element may allow for a quick removal of the compression sleeve element without requiring that it be slid off an end of either elongated member.
1. An adjustable telescoping member retention apparatus comprising:
a compression sleeve element;
a first elongated member having a first portion that said compression sleeve element at least partially surrounds; and
a larger elongated member having a second portion that said compression sleeve element at least partially surrounds,
wherein a third portion of said first elongated member is nested in at least a fourth portion of said larger elongated member,
wherein said first portion is not nested in said larger elongated member, and
wherein said compression sleeve element has a first elongated member compression surface and a larger elongated member compression surface, said apparatus further comprising:
a single clamp activatable to generate a compressive force that retains said first elongated member in a desired fixed position relative to said larger elongated member, said single clamp established around said compression sleeve element so that, upon activation of said single clamp, said single clamp forces:
said larger elongated member compression surface against said larger elongated member, and
said first elongated member compression surface towards a site on said first elongated member, and
a relative motion obstruction element adapted to prevent axial and rotational motion of said compression sleeve element relative to said larger elongated member when said single clamp is unclamped but still around said compression sleeve element,
wherein said compression sleeve element is shaped to provide a clearance from said larger elongated member, between said first elongated member compression surface and said larger elongated member compression surface, to said compression sleeve element.
2. An adjustable telescoping member retention apparatus as described in claim 1 wherein said compression sleeve element is separated along at least one split from a first elongated member proximate edge of the compression sleeve element to a larger elongated member proximate edge of the compression sleeve element, wherein said at least a fourth portion of said larger elongated member has a larger elongated member longitudinal axis, and wherein said compression sleeve element is perpendicularly displaceable and perpendicularly removable, relative to said larger elongated member longitudinal axis, from said first elongated member and said larger elongated member upon unclamping of and effective disengagement of said single clamp.
3. An adjustable telescoping member retention apparatus as described in claim 2 wherein said at least one split is two splits.
4. An adjustable telescoping member retention apparatus as described in claim 1 wherein said single clamp has an eccentric cam.
5. An adjustable telescoping member retention apparatus as described in claim 1 wherein said third portion of said first elongated member has an outer surface sized to fit substantially against an inner surface of said at least a fourth portion of said larger elongated member.
6. An adjustable telescoping member retention apparatus as described in claim 1 wherein said compression sleeve element is radially displaceable and radially removable upon unclamping of and effective disengagement of said single clamp.
7. An adjustable telescoping member retention apparatus as described in claim 1 wherein each said first elongated member and said larger elongated member is hollow.
8. An adjustable telescoping member retention apparatus as described in claim 1 wherein said single clamp forces said first elongated member compression surface against a surface on said first elongated member that is not nested within said larger elongated member.
9. An adjustable telescoping member retention apparatus as described in claim 1 wherein said first elongated member has a circular cross-section.
10. An adjustable telescoping member retention apparatus as described in claim 1 wherein said relative motion obstruction element is established on said compression sleeve element and said larger elongated member.
11. An adjustable telescoping member retention apparatus as described in claim 10 wherein said relative motion obstruction element comprises at least one projection and at least one recess sized to accommodate said at least one projection, said at least one projection and said at least one recess established so that passage of said at least one projection into said at least one recess prevents said axial and rotational motion of said compression sleeve element relative to said larger elongated member.
12. An adjustable telescoping member retention apparatus as described in claim 11 wherein said at least one recess comprises at least one recess in said larger elongated member.
13. An adjustable telescoping member retention apparatus as described in claim 11 wherein said at least one recess comprises at least one hole.
14. An adjustable telescoping member retention apparatus as described in claim 13 wherein said at least one hole is through said larger elongated member.
15. An adjustable telescoping member retention apparatus as described in claim 11 wherein said at least one projection comprises at least one projection projecting inwardly from said compression sleeve element.
16. An adjustable telescoping member retention apparatus as described in claim 1 wherein said single clamp comprises a clamping lever.
17. An adjustable telescoping member retention apparatus as described in claim 1 wherein said single clamp comprises a threaded bolt and nut.
18. An adjustable telescoping member retention apparatus comprising:
a compression sleeve element;
a first elongated member having a first portion that said compression sleeve element at least partially surrounds; and
a larger elongated member having a second portion that said compression sleeve element at least partially surrounds,
wherein a third portion of said first elongated member is nested in at least a fourth portion of said larger elongated member,
wherein said first portion is not nested in said larger elongated member, and
wherein said compression sleeve element has a first elongated member compression surface and a larger elongated member compression surface,
said apparatus further comprising:
a single clamp activatable to generate a compressive force that retains said first elongated member in a desired fixed position relative to said larger elongated member, said single clamp established around said compression sleeve element so that, upon activation of said single clamp, said single clamp forces:
said larger elongated member compression surface against said larger elongated member, and
said first elongated member compression surface towards a site on said first elongated member, and
a relative motion obstruction element adapted to prevent axial and rotational motion of said compression sleeve element relative to said larger elongated member when said single clamp is unclamped but still around said compression sleeve element,
wherein said larger elongated member compression surface directly contacts said larger elongated member and said first elongated member compression surface directly contacts said first elongated member.
19. An adjustable telescoping member retention apparatus as described in claim 18 wherein said compression sleeve element is separated along at least one split from a first elongated member proximate edge of the compression sleeve element to a larger elongated member proximate edge of the compression sleeve element, wherein said at least a fourth portion of said larger elongated member has a larger elongated member longitudinal axis, and wherein said compression sleeve element is perpendicularly displaceable and perpendicularly removable, relative to said larger elongated member longitudinal axis, from said first elongated member and said larger elongated member upon unclamping of and effective disengagement of said single clamp.
20. An adjustable telescoping member retention apparatus as described in claim 19 wherein said at least one split is two splits.
21. An adjustable telescoping member retention apparatus as described in claim 18 wherein said single clamp has an eccentric cam.
22. An adjustable telescoping member retention apparatus as described in claim 18 wherein said third portion of said first elongated member has an outer surface sized to fit substantially against an inner surface of said at least a fourth portion of said larger elongated member.
23. An adjustable telescoping member retention apparatus as described in claim 18 wherein said compression sleeve element is radially displaceable and radially removable upon unclamping of and effective disengagement of said single clamp.
24. An adjustable telescoping member retention apparatus as described in claim 18 wherein said single clamp forces said first elongated member compression surface against a surface on said first elongated member that is not nested within said larger elongated member.
25. An adjustable telescoping member retention apparatus as described in claim 18 wherein said relative motion obstruction element is established on said compression sleeve element and said larger elongated member.
26. An adjustable telescoping member retention apparatus as described in claim 25 wherein said relative motion obstruction element comprises at least one projection and at least one recess sized to accommodate said at least one projection, said at least one projection and said at least one recess established so that passage of said at least one projection into said at least one recess prevents said axial and rotational motion of said compression sleeve element relative to said larger elongated member.
27. An adjustable telescoping member retention apparatus as described in claim 26 wherein said at least one recess comprises at least one recess in said larger elongated member.
28. An adjustable telescoping member retention apparatus as described in claim 26 wherein said at least one recess comprises at least one hole.
29. An adjustable telescoping member retention apparatus as described in claim 28 wherein said at least one hole is through said larger elongated member.
30. An adjustable telescoping member retention apparatus as described in claim 26 wherein said at least one projection comprises at least one projection projecting inwardly from said compression sleeve element.
31. An adjustable telescoping member retention apparatus as described in claim 18 wherein said single clamp comprises a clamping lever.
32. An adjustable telescoping member retention apparatus as described in claim 18 wherein said single clamp comprises a threaded bolt and nut.