Pipe joints or couplings – U-type
Reexamination Certificate
2001-09-04
2003-07-08
Browne, Lynne H. (Department: 3679)
Pipe joints or couplings
U-type
C285S125100, C004S679000, C004S696000
Reexamination Certificate
active
06588803
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to p-traps for plumbing commercial and residential drainage systems and, more specifically to a p-trap that is extendible and has a threaded port to receive a pressure hose for a dishwasher waste line. The present invention further includes a plurality of multiport PVC pipe fittings in various configurations to provide greater flexibility when plumbing.
2. Description of the Prior Art
Numerous pipe fittings have been provided in prior art. Typical of these is U.S. Pat. No. 733,475 issued to T. F. Foley on Jul. 14, 1903.
Another patent was issued to F. Walker on May 2, 1905 as U.S. Pat. No. 788,803. Yet another U.S. Pat. No. 846,600 was issued to B. Oakes on Mar. 12, 1907 and still yet another was issued on Apr. 7, 1908 to V. J. Emery as U.S. Pat. No. 884,326. Another patent was issued on Apr. 12, 1910 to C. Colombo as U.S. Pat. No. 954,852. Another patent was issued to E. Kennedy on Jun. 22, 1939 as U.S. Pat. No. 2,237,672 and one more patent was issued on Apr. 21,1942 as U.S. Pat. No. 2,280,195 to H. Long. U.S. Pat. No. 2,303,909 was issued to C. H. Nordell on Jan. 13, 1940 and another patent was issued to G. F. Radcliffe on Sep. 7, 1946 as U.S. Pat. No. 2,476,908. Still another patent was issued to W. J. Collison et al. on Aug. 25, 1949 as U.S. Pat. No. 2,566,654. U.S. Pat. No. 3,936,892 was issued on Feb. 10, 1976 to Frederick A. Miller and still another U.S. Pat. No. 4,181,330 was issued to Noriatsu Kojima on Jan. 1, 1980. On Mar. 12, 1991 U.S. Pat. No. 4,998,754 was issued to Shigeyuki Matsumoto et al. and yet another patent was issued on Oct. 3, 2000 to Billy J. Hobbs as U.S. Pat. No. 6,125,881.
U.S. Pat. No. 733,475
Inventor: T. F. Foley
Issued: Jul. 14, 1903
The combination with the vessel, having the thickened upper portion, female screw-threaded and the groove, of the cover, provided with screw-threads and annular flange having the inner shoulder at the base thereof adapted to receive the lower end of the pipe, the sleeve engaging the threaded annular flange and the pipe, said pipe cover and annular flange formed of a single piece, the whole constructed and arranged, substantially as described.
U.S. Pat. No. 788,808
Inventor: F. Walker
Issued: May 2, 1905
A double drainage-fitting consisting of a soil-pipe section having a central chamber with lateral downwardly-curved inlet branches, the upper side of said branches terminating inside the chamber in deflectors at a point which is lower than the center of the inlets of the drainage branches.
U.S. Pat. No. 846,600
Inventor: Ben Oakes
Issued: Mar. 12, 1907
A water closet bend, its inlet screw-threaded to receive a flange, the flange having an opening eccentric to the threaded portion to receive a pipe connection leading to a closet, the construction being such that a slight lateral adjustment of the pipe with reference to the closet and the bend may be effected by rotating said flange, substantially as described.
U.S. Pat. No. 884,326
Inventor: Victor J. Emery
Issued: Apr. 7, 1908
A multiple cylinder engine having in combination a plurality of water jackets, a common water circulating device for supplying water thereto, a distributing device provided at one end with an inlet communicating with the circulating device, and at the opposite end with a plurality of outlets communicating with the respective water jackets, and with a partition between the adjacent outlets extending from the outlet end towards and in line with the inlet and so arranged that the inlet area is subdivided thereby into equal areas corresponding in number to the number of outlets opening, substantially as described.
U.S. Pat. No. 954,852
Inventor: Charles Colombo
Issued: Apr. 12, 1910
In a soil-pipe fitting, an elbow adapted to receive the end of the soil-pipe, a clean-out branch formed therewith, the lower portion of the innermost wall of the clean-out branch being confined within the elbow and deflected toward the rear wall of the elbow.
U.S. Pat. No. 2,237,672
Inventor: Edward Kennedy
Issued: Apr. 8, 1941
As a new article of manufacture, a plumber's fitting adapted to be interfitted with waste-stack sections in a building having numerous fixtures intended to be connected-in to said waste stack and requiring to be vented; said fitting comprising in a unitary structure a body provided with a central waste channel having spigot and socket terminals adapted to be connected into the waste stack, said body having a set of lateral inlets constructed and arranged to receive selectively from different sides of said channel lead-in connections from one or more of said plumbing fixtures, said body having a set of outlet openings from said central channel adapted to be connected selectively with vent pipes, and said body further having a cross-passage in communication with said central waste channel.
U.S. Pat. No. 2,280,195
Inventor: Hugh Long
Issued: Apr. 21, 1942
In a hollow fitting having openings for connection to a pair of oppositely directed conduits as well to another conduit that is angularly displaced from said pair, a wall forming a surface in said fitting opposite the opening for said other conduit, said surface having a sloping configuration extending substantially across the opening of said other conduit to guide substantially all of the liquid entering from said other conduit into one of the pair of oppositely directed conduits and away from the other of the pair, and a ridge extending partly around said surface and opposite the edge of said opening, and overhanging said surface, to prevent separation of the stream of liquid between said pair.
U.S. Pat. No. 2.303,949
Inventor: Carl H. Nordell
Issued: Jan. 13, 1940
A hydraulic fluid conduit bend having an outer curved surface of substantially segmentary circular form, an inner surface which conforms substantially to a segment of an ellipse having its minor axis in substantial alignment with the apex of the bend, said conduit having apical cross sectional area substantially 10% to 30% greater than the cross sectional area at the ends of the conduit, whereby the bend will offer a resistance to flow of the hydraulic fluid substantially less than that offered by a corresponding bend of uniform cross-sectional area.
U.S. Pat. No. 2,476,908
Inventor: George F. Radcliffe
Issued: Jul. 19, 1949
A double fitting for connecting the bends of two water closets with the main sewage run, comprising a pair of pipe members disposed in horizontal parallel relation and joined by and interjacent party wall; one of said members having a passageway therethrough formed to connect with the main run of pipe; and the other member having ends formed to connect with the bends of said closets and having two outlets leading from opposite directions through an opening in said party wall into said passageway; and a single curved directional partition vertically disposed inside and secured to said other member and positioned to discharge arcuately.
U.S. Pat. No. 2,566,654
Inventor: William J. Collison et al.
Issued: Sep. 4, 1951
A device comprising a fitting provided with a body, said body provided with horizontal openings, and short horizontal baffles in said body at the openings only and extending partly over said horizontal openings leaving the bore of the fitting clear.
U.S. Pat. No. 3,936,892
Inventor: Frederick A. Miller
Issued: Feb. 10, 1976
A plumbing fitting that is adaptable to be installed along any drain line so to permit the drain line to be easily and readily cleaned out in case it becomes clogged; the device consisting of a length of pipe having an internal screw thread at one end and an external screw thread at an opposite end for easy connection along the drain line, the length of pipe having a branch line extending from a side thereof and which is adaptable for receiving a clean-out rod or which may be attached to a hose, and a shut off valve cock being located along the main pipe so as to prevent back pressure up into a plumbing fixture such as a sink, tub or toilet.
U.S. Pat. No. 4,181,330
Inventor: Noriatsu K
Browne Lynne H.
Collins G M
Kroll Michael I.
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