Shut-off device
First Claim
1. A shut-off device, comprising:
- an upper valve body;
a lower valve body, the lower valve body connecting to the upper valve body to surround a section of a pipe to form a chamber therein;
a first flange bearing forming a first seal;
a second flange bearing forming a second seal, the second flange bearing independent from the first flange bearing and each on an opposite side of the upper and lower valve bodies, each of the first and second flange bearings held together by respective valve clamps; and
a cutting blade in the chamber, the cutting blade larger than twice a diameter of the pipe, the cutting blade tightening against the pipe as the cutting blade is rotated around an outer circumference of the pipe to provide pressure against an outer perimeter of the pipe to cut through the pipe and at least partially seal an opening in the cut pipe;
wherein either flange bearing can be opened separately and independently to allow insertion of new pipe sections.
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Accused Products
Abstract
An example shut-off device includes an upper valve body, and a lower valve body. The lower valve body connects to the upper valve body to surround a section of a pipe to form a chamber therein. A cutting blade in the chamber is tightening against the pipe to cut through the pipe and at least partially seal an opening in the cut pipe. Following a repair to the pipe, the cutting blade may be operated as a gate valve, opening to permit fluid flow through the pipe, and closing to at least partially restrict or fully stop fluid flow through the pipe. Also disclosed is an emergency repair for a pipe including a sleeve housing configured to be opened and closed around a portion of a pipe to be repaired, and a tightening mechanism configured to reduce an inner diameter and tighten against the pipe to be repaired.
25 Citations
20 Claims
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1. A shut-off device, comprising:
- an upper valve body;
a lower valve body, the lower valve body connecting to the upper valve body to surround a section of a pipe to form a chamber therein;
a first flange bearing forming a first seal;
a second flange bearing forming a second seal, the second flange bearing independent from the first flange bearing and each on an opposite side of the upper and lower valve bodies, each of the first and second flange bearings held together by respective valve clamps; and
a cutting blade in the chamber, the cutting blade larger than twice a diameter of the pipe, the cutting blade tightening against the pipe as the cutting blade is rotated around an outer circumference of the pipe to provide pressure against an outer perimeter of the pipe to cut through the pipe and at least partially seal an opening in the cut pipe;
wherein either flange bearing can be opened separately and independently to allow insertion of new pipe sections. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- an upper valve body;
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13. A shut-off device to restrict fluid flow in a pipe, the shut-off device comprising:
- a body configured to surround a section of a pipe;
a chamber formed within the body adjacent the section of the pipe;
a first flange bearing forming a first seal;
a second flange bearing forming a second seal, the second flange bearing independent from the first flange bearing and each on an opposite side of the body, each of the first and second flange bearings held together by respective valve clamps; and
a cutting device operable within the chamber to cut the pipe, the cutting device larger than twice a diameter of the pipe, the cutting device tightening against the pipe as the cutting blade is rotated around an outer circumference of the pipe to provide pressure against an outer perimeter of the pipe to cut through the pipe as the cutting device is rotated around the pipe so that fluid from the cut pipe is retained against leakage within the chamber;
wherein either flange bearing can be opened separately and independently to allow insertion of new pipe sections. - View Dependent Claims (14, 15, 16, 17)
- a body configured to surround a section of a pipe;
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18. An emergency repair device for a pipe, comprising:
- a valve housing;
a sleeve housing configured to be opened and closed around a portion of damaged pipe;
a first flange bearing forming a first seal;
a second flange bearing forming a second seal, the second flange bearing independent from the first flange bearing and each on an opposite side of the valve housing, each of the first and second flange bearings held together by respective valve clamps;
a tightening mechanism configured to reduce an inner diameter of the sleeve to form a compression clamp against the portion of damaged pipe; and
a cutting device operable within the sealed chamber to cut the pipe, the cutting device larger than twice a diameter of the damaged pipe, the cutting device tightening against the damaged pipe as the cutting blade is rotated around an outer circumference of the damaged pipe to provide pressure against an outer perimeter of the damaged pipe to cut through the damaged pipe and retain fluid against leakage within the sealed chamber;
wherein the sleeve housing has a hardened outside and a pliable inside to seal a leak in the portion of damaged pipe;
wherein either flange bearing can be opened separately and independently to allow insertion of new pipe sections. - View Dependent Claims (19, 20)
- a valve housing;
Specification