Locking means
OwnerMiles K. Larkininventor
Life of this patent
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Abstract
The invention relates to locking means for telescopically adjustable tubes and includes a support which is mountable in an inner tube. A stem is connected to or is integral with the support and a resilient bushing member is provided on the stem. In addition, a locking member is mounted on the stem which is capable of engaging with an outer tube but that on operation of the invention the adjustable tubes are locked relative to one another.
Claims8
Locking means for inner and outer telescopically engageable tubes, including at least one primary locking member and at least one secondary locking member in the form of a substantially resilient bushing mounted within a section of the inner tube which is within the outer tube, so as to be engageable with the inner surface of the outer tube, the primary locking member and resilient bushing being mounted relative to the inner tube and to each other so that relative rotational movement between said inner and outer tubes causes said primary locking member to lockingly engage the inner surface of said outer tube and a further relative axial movement between said inner and outer tubes causes said resilient bushing to be compressed longitudinally and thereby to expand substantially radially into engagement with the inner surface of said outer tube.
Locking means for inner and outer telescopically adjustable tubes comprising a support mountable within the inner tube, a stem connected to said support, a resilient bushing on said stem, a locking member eccentrically mounted on said stem capable of engaging with the outer tube, a spacer between said locking member and said resilient bushing, and a channel in the outer face of said support to enable said support to move axially within said inner tube.
Dependencies are inferred from the claim text.