Pipes and tubular conduits – Reinforced
Reexamination Certificate
2005-06-07
2005-06-07
Brinson, Patrick (Department: 3752)
Pipes and tubular conduits
Reinforced
C138S089000, C138S09600T, C138S174000, C138SDIG004
Reexamination Certificate
active
06901969
ABSTRACT:
A method and apparatus for reinforcing duct work is provided. In one embodiment, a reinforcement comprises a conduit having a first end and a second end. A pair of plugs is insertable into the first and second ends of the conduit. Each of the plugs has a groove extending along the circumference of the plug, and the plugs are crimped inside the conduit along the grooves. Each of the plugs may have a threaded end extending out of the plug and being retractable into said plug. Alternatively, each of the plugs may have an internally threaded opening extending at least partially through the plug. In this embodiment, the conduit can be secured to duct work by aligning the conduit with holes in the duct work, and inserting a bolt through the holes and into the internally threaded openings of the plugs.
REFERENCES:
patent: 3883942 (1975-05-01), Fichter et al.
patent: 3964339 (1976-06-01), Antonio et al.
patent: 4249578 (1981-02-01), Freeman
patent: 4391771 (1983-07-01), Anthony
patent: 4434816 (1984-03-01), Di Giovanni et al.
patent: 4811759 (1989-03-01), Billoue
patent: 4946143 (1990-08-01), Bauer et al.
patent: 5079992 (1992-01-01), Bauer et al.
patent: 5253901 (1993-10-01), Hunter
patent: 5531299 (1996-07-01), Bataille
patent: 6116833 (2000-09-01), Ellis
patent: 6170530 (2001-01-01), Steblina
patent: 6484385 (2002-11-01), Ellis
patent: 2002/0015465 (2002-02-01), Brosset
Brinson Patrick
Knobbe Martens Olson & Bear LLP
LandOfFree
Plugs for use in conduits to reinforce air conditioning... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plugs for use in conduits to reinforce air conditioning..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plugs for use in conduits to reinforce air conditioning... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3513017