Winch drum cable length measurement apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 26, 1982
Issued Date -
N/A
app pub date -
Sep 27, 1979
filing date -
Apr 6, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is an electronic wire length measuring apparatus for accurately measuring and indicating the height of a traveling block above a fixed reference point in oil well drilling applications where a traveling block is hooked to a cable and pulley arrangement and to a winch drum, said winch drum being used to vary the height of the traveling block. The wire length measuring apparatus produces an output visual indication of the height of the traveling block independent of variations in drum size, wire size, number of layers on the drum, and the weight load on the traveling block, which causes a lower actual traveling block position due to stretching in the wire.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully