Anchor with deoperable screw

Details Anchor with deoperable screw Anchor with deoperable screw

1992-11-25

1993-08-31

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Rock or earth bolt or anchor

405258, 52157, E21D 2000

Patent

active

052403530

ABSTRACT:
An anchor for boring into a deformable substance which includes an elongate shaft adapted for disposition in the deformable substance is provided. The anchor has proximal and distal end portions and a central longitudinal axis. A handle is carried by the proximal end portion for causing rotation of the shaft about the axis. A drive screw is carried by the distal end portion for moving the shaft in opposite first and second longitudinal directions when the shaft is rotated in respective opposite first and second rotational directions about the axis. The anchor also includes a disengagement assembly carried by the shaft for deactivating the drive screw so that the shaft can rotate relatively freely without longitudinal movement thereof. The drive screw has an outer surface with a helical screw thread formed thereon and is rotatably mounted to the shaft distal end portion for rotation about the axis. The disengagement assembly includes a clutch assembly carried within the shaft for rotationally locking and delocking the drive screw with the shaft. In one embodiment, the end piece has a tip for piercing the soil. In another embodiment, the shaft and screw are provided with longitudinal bores therethrough for permitting the passage of soil therethrough. A fin with a leading end can be pivotly mounted near the trailing edge of the drive screw thread for increasing the torque necessary to rotate the end piece in the second rotational direction.

REFERENCES:
patent: 3786641 (1974-01-01), Turzillo
patent: 4397589 (1983-08-01), Darroussin et al.
patent: 4580795 (1986-04-01), Burtelson et al.
patent: 4592178 (1986-06-01), Lu
patent: 4702047 (1987-10-01), Stokes
patent: 5066168 (1991-11-01), Holdeman

Affiliated with

Also associated with

Rating

Anchor with deoperable screw does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Anchor with deoperable screw, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anchor with deoperable screw will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2294045