Safety device for a cable stretching machine, corresponding method and stretching machine using said device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 31, 2017
Grant Date -
Oct 22, 2015
app pub date -
Dec 4, 2013
filing date -
Dec 5, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Safety device for a stretching machine of the brake type comprising a negative brake which can be selectively activated and de-activated so as to constrain and respectively allow the rotation of at least one capstan which supports cables, a pumping device connected to the negative brake and configured to de-activate the latter during the normal use of the stretching machine, putting a working fluid under pressure, pressure energy accumulation means of said working fluid, and a maximum pressure valve configured to regulate the working pressure of a hydraulic motor for controlling the twisting torque applied to the capstan. The device also comprises a motorized drive device connected to the maximum pressure valve and provided to selectively regulate the action of the latter on the hydraulic motor, even in a breakdown condition of at least the pumping device, in order to maintain the working pressure of the hydraulic motor and to maintain the negative brake de-activated by the intervention of the pressure energy accumulation means.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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