Other

Duane D Robertson

Rodney G May

Kit N Robertson

A combined clamping and cutting tool for manually cutting plastic pipes. The cutting portion includes a pair of elongated members pivotally mounted to each other with each elongated member having a handle section and a cutting section. Cutting wheels are rotatably mounted to each cutting section. The clamping portion includes at least three members with the first and second members pivotally mounted to each other and the second and third members pivotally mounted to each other. The first and second clamping sections respectively have a pair of spaced-apart, parallel legs that firmly and slidably receive the cutting sections of the cutting portion therebetween. Interlocking tracks are also provided to maintain the clamping and cutting portions together during use and to provide an interaction between the two portions to aid in opening them to receive the pipe.

Combined clamping and cutting tool for plastic pipes

A spring-biased cutting tool for plastic pipes. The tool includes two elongated members pivotally connected to each other in a scissors-like manner. Each elongated member has a handle portion and a jaw portion with one jaw portion including a knife blade and the other an anvil. To assemble the elongated members, one of them is provided with a central aperture or hole through which the other member can be passed to form the scissors-like shape. A leaf spring in then clipped at one end over an edge portion of the aperture and extends across to abut against the other elongated member and bias the handles of the tool apart and the jaws of the tool is open to receive a pipe to be cut.

Spring-biased cutting tool for plastic pipes

Replacement fittings for substantially rigid pipes. Each fitting preferably includes a main body with telescoping, sleeve members mounted on it. The sleeve members can be individually slid along the main body but cannot be removed from it. In this manner, the preferred fittings of the present invention can be handled as a single unit and all of the linked pieces will stay together and cannot be inadvertently left behind. They also cannot be accidentally lost or dropped on the way to the job site or during the repair operation. The various pieces of the fittings employ tapering surfaces that not only ensure the pieces will stay together while the fittings are being manipulated into position but also aid in creating the strongest bonds and seals with the pipes.

Replacement fitting for rigid, plastic pipes

A pipe fitting for a flexible pipe such as used in lawn sprinkler systems. The fitting includes a pipe sealing portion and a pipe gripping portion. The pipe sealing portion has a smooth, seamless cylindrical surface to form a strong, watertight seal with the inner surface of the pipe. The pipe gripping portion is spaced from the sealing portion and includes a cylindrical surface with two rows of spikes extending axially along it. The rows are spaced 180 degrees from each other about the cylindrical surface and the cylindrical surface of the gripping portion has a smaller diameter than the cylindrical surface of the sealing portion. In use, the flexible pipe is forced to assume a substantially elliptical shape as it passes over the rows of progressively taller spikes. The pipe can then be crimped if desired to embed the spikes into the wall of the pipe and preferably to drive at least some of the spikes completely through the pipe wall.

Pipe fitting

A pipe saddle for providing a reliable connection to a pipe. The present invention uses a barb seal which embeds within the surface of the pipe to lock the pipe saddle in place and prevent leakage. The barb seal is formed from the material of the pipe saddle so that no deterioration occurs. The barb seal has an oval shape to provide better sealing capabilities. T-bolt connectors allow the device to be individually tightened on each side of the pipe while allowing the body portions of the saddle to be pivotally opened yet maintained as a single unit to allow easy implementation.

Cutting tool

Pipe saddle

Cutting tool for flexible plastic conduit

A cutting tool for cutting flexible plastic conduit, formed by a pair of handled jaws pivotally connected intermediate their ends. One jaw is box shaped in cross-section and forms a handle which supports a knife blade, which has a longitudinal cutting edge. The other jaw is generally channel-shaped in cross-section and forms a handle with a semi-circular concave anvil at one end. The anvil has an axially extending slot therein for receiving the cutting edge of the knife blade when the handles are closed together with the box-shaped handle nested within the channel-shaped handle. A conduit supported in the semi-circular anvil is cut by the knife blade as the handles are squeezed together.

A fitting, for pipe of flexible plastic material, having improved sealing and mechanical holding characteristics. The fitting includes a main body having an external screw thread terminating at a shoulder from which a coaxial, reduced-diameter, nipple projects. Annular saw tooth or buttress ribs on the nipple are dimensioned to have a slip fit into the interior of a plastic pipe section. A collet is slideable on the exterior of the pipe section into abutment with the shoulder and is radially compressed by a collet sleeve threaded onto the external threads of the fitting body. Axial slots in the collet open alternately at opposite ends of the collet so that radial compression is achieved over the entire length of the collet. Saw toothed or buttress annual ribs on the collet interior bite into the exterior surface of the pipe section in opposition to the ribs on the inserted nipple, the pipe wall being thereby radially clamped between the collet and nipple. To prevent relative rotation between the fitting and the pipe during connection and provide a positive nonrotating engagement between the collet and the fitting, the leading end of the collet is provided with a plurality of ratchet teeth which engage and cooperate with projections or ratchet dogs on the face of the shoulder of the fitting and the projections or dogs on the shoulder additionally partially bite into and become embedded in the end of the pipe.

Growing community of inventors

Golden, CO, United States of America

Duane D Robertson