Compound linkage-arm assembly for use in borehole tools
Patent
·
OSTI ID:6728189
This patent describes an apparatus for urging a device against a wall of a container. It comprises: a drive means within the device; an arm pivotably coupled at one end to the device, the arm adapted to rest adjacent the device and to swing out from the device in an arc to engage the wall of the container; first means interconnecting the arm and the drive means for extending and retracting the arm along the arc with respect to the device upon actuation of the drive means; and second means pivotally coupled to the arm and to the first means for exerting an initial lateral force upon the arm with actuation of the drive means, thereby extending and retracting the arm with respect to the device.
- Assignee:
- Western Atlas International, Inc., Houston, TX (USA)
- Patent Number(s):
- A; US 4926937
- Application Number:
- PPN: US 7-363584A
- OSTI ID:
- 6728189
- Country of Publication:
- United States
- Language:
- English
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