Non-return valve

Details Non-return valve Non-return valve

E - Fixed Constructions

21

D

166/16

E21D 21/00 (2006.01) E21B 33/126 (2006.01) E21B 33/127 (2006.01) E21B 33/13 (2006.01) E21B 34/06 (2006.01)

Patent

CA 1259908

ABSTRACT A non-return valve is provided for use with a bore hole sleeve, which is intended to provide a passage for the injection of a sealing and/or reinforcing compound into a crack in a rock. The bore hole sleeve comprises a rigid case, one end of which is provided with means for detachably connecting the case to a pump hose, expandable means for securing the rigid case in a bore hole; and an elastic sleeve which is attached to the other end of the rigid case in such a way that the rigid case runs into the elastic sleeve. The elastic sleeve is adapted automatically to contract, when compound is not being injected through the elastic sleeve, so that already injected compound can not flow back into the rigid case.

496427

Affiliated with

Also associated with

Rating

Non-return valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1238988