Mining roof support cylinder corrosion protection apparatus...

Details Mining roof support cylinder corrosion protection apparatus... Mining roof support cylinder corrosion protection apparatus...

2008-05-27

2008-05-27

Singh, Sunil (Department: 3672)

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

C422S010000

Reexamination Certificate

active

07377727

ABSTRACT:
A roof support for an underground mine which has a hydraulic cylinder positioned between a roof engaging support and a ground engaging base and has a flexible gas barrier or enclosure surrounding surfaces of said hydraulic cylinder which are subject to corrosion by gases present in the underground mine. Continuous flowing non-corrosive gas such as nitrogen is supplied to a space between the gas barrier and the hydraulic cylinder for preventing corrosion of cylinder surfaces by corrosive gases present in the mine which may include hydrogen sulfide.

REFERENCES:
patent: 4557808 (1985-12-01), Strunck et al.
patent: 4612848 (1986-09-01), Pollack
patent: 5026218 (1991-06-01), Zimmerman
patent: 5074623 (1991-12-01), Hedlund et al.
patent: 5950673 (1999-09-01), Elliott-Moore
patent: 5997100 (1999-12-01), Marshall et al.
patent: 6551552 (2003-04-01), Lyublinski et al.
patent: 3139046 (1983-04-01), None
patent: 62-287087 (1987-12-01), None

Affiliated with

Also associated with

Rating

Mining roof support cylinder corrosion protection apparatus... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mining roof support cylinder corrosion protection apparatus..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mining roof support cylinder corrosion protection apparatus... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2748932