Patent ID: 6581737
Filing Date: 2003-06-24
Classification: B25B,B27B,F16B,Y10T

Abstract:
An anchoring apparatus for a multi-section pulling bar of a trunk located in a pulling bar means which includes a handle having two ends each has a bottom side fastened to an inner tube with a linkage bar located therein coupled with a spring, the inner tube being housed in a middle tube and the middle tube being housed in an outer tube, the inner tube having latch bores formed on the inner tubular wall at the bottom section thereof, the middle tube having a plurality of first latch bores formed on the middle tubular wall thereof, the outer tube having second latch bores formed on the outer tubular wall thereof and a bottom section engaged with a coupling bore of a base seat, the anchoring apparatus comprising an upper anchoring means located at a lower end of the inner tube and a lower anchoring means located at a lower end of the middle tube, wherein:the outer tube has an anchor bore located at the bottom section thereof; the upper anchoring means includes: an upper engaging seat which has a first coupling member with a plurality of first coupling bores formed on a side wall thereof to couple with first latch fingers of a first wedge member for forming the upper engaging seat, the first coupling member having a first guide channel located therein and a first guide bore formed on the side wall, the first coupling member and the first wedge member having respectively a first aperture formed at an upper section mating with each other for receiving a first latch bolt; an upper extensible button located in the upper engaging seat having a first chamfer block which has a first slant chamfer plane and a first base seat at the bottom thereof, the first base seat having two sides slidable in the first guide channel of the upper engaging seat, and a first jutting stub located at the same side as the first slant chamfer plane of the first chamfer block, the upper extensible button further having a first spring located at another side opposite to the first jutting stub; and an upper strut having a first coupling bore formed at an upper end to engage with the bottom end of the linkage bar, a first longitudinal through slot to allow the first latch bolt of the upper engaging seat to pass through, and a first slant bottom section; the lower anchoring means includes: a lower engaging seat which has a second coupling member with a plurality of second coupling bores formed on a side wall thereof to couple with second latch fingers of a second wedge member for forming the lower engaging seat, the second coupling member having a second guide channel located therein and a second guide bore formed on the side wall, the second coupling member and the second wedge member further having respectively a second aperture formed at an upper section mating with each other for receiving a second latch bolt; a lower extensible button located in the lower engaging seat having a second chamfer block which has a second slant chamfer plane and a second base seat at the bottom thereof, the second base seat having two sides slidable in the second guide channel of the lower engaging seat, and a second jutting stub located at the same side as the second slant chamfer plane of the second chamfer block, the lower extensible button having a second spring located at another side opposite to the second jutting stub, the second base seat further having the bottom side fastened to a bottom lid through a plurality of fastening bolts, the bottom lid having an indented recess which has one side formed a trough for holding an anchor bolt, the anchor bolt having a rear end pushed by a third spring for moving and extending the anchor bolt through a third aperture formed on the lower engaging seat; and a lower strut having a second longitudinal through slot to allow the second latch bolt of the lower engaging seat to pass through, and a second slant bottom section; wherein the anchor bore of the outer tube is matching and engageable with the lower extensible button and the anchor bolt of the lower anchoring means such that the second jutting stub of the lower anchoring means is extensible to engage with the latch bore of the outer tube when the pulling bar means is extended, and the anchor bolt is extensible to engage with the anchor bore of the outer tube when the pulling bar means is retracted.