Mcelroy Manufacturing, Inc.

Other

James R Perrault

Arthur H McElroy, Ii

Timothy Michael Thoman

David W Porter

Jason A Lawrence

Bobby Lee Murray

Dave Hughes

Wilianto Wongso

Joshua B Combs

Hayden Davis

William Barton Draeger

Brian M O'Connell

Seth P Ahrens

Abraham B Contreras

Fabiano Tavares De Souza

Brandon William Jackman

David Warren Porter

Arthur H Mcelroy

A fusion machine which can be top-loaded on very large polyolefin pipes and pipelines has jaws which consist of an upper half jaw and lower left and right complemental jaws which pivot on the half jaw. Left and right actuators connected between the complemental jaws and the half jaw operate in one direction to cause the complemental jaws to rotate to an opened condition in which the upper half jaw can be lowered onto and lifted from the pipes to be fused and in the other direction to cause the complemental jaws to rotate to a closed condition in which the pipes to be fused are gripped so substantially around their circumferences as to resist their deformation from round during manipulation by the machine. The top-loading machine minimizes the need for heavy equipment to load and unload pipe to and from the fusion machine.

Top-loading straddle-mounted pipe fusion machine

A facer for use in preparing the opposed ends of polyolefin pipes for fusion into a pipeline has a pair of cutting wheels which rotate in unison. A controller causes the cutting wheels to trace and face the pipe end walls in a closed loop path.

Cartesian pipe facer

For use in loading heavy sticks of plastic pipe into a pipe fusion machine, a pipe storage rack with hydraulically powered pipe stick dispensers and stands allows sticks of pipe stored on the rack to roll gravitationally onto a rocking V-shaped dispenser cam disposed between the rack and the fusion machine loading path for one-stick-at-a-time loading onto powered track and roller stands which enable Cartesian manipulation of the stick into the fusion machine. The cam is adjustable to suit pipe stick diameters ranging from 20&#x2033; to 48&#x2033;. Many sticks can be stored at one time, releasing heavy lifting equipment and operators to work elsewhere. The process requires only one operator using a pendant controller and the pipe sticks are handled by heavy equipment only when being loaded onto the racks.

Rack type pipe feeder for a pipe fusion machine

A method and template enable the testing of fusion joints of plastic pipes to be conducted by a single operator in the field at the welding site by the efficient and precise extraction from the joints to be tested of a number of high quality tensile coupons. The coupons are tested to failure in a field-suitable, well controlled, self contained, tensile testing apparatus. A narrowing bow-tie-like pattern of the coupon ensures that the failure of the coupon in the tensile test will occur at the narrowest section of the coupon. The template can be visually aligned with the joint to ensure that it is the joint that will be tested.

Method and template for producing a tensile test coupon

Cabinet for a ceramic cooker

A heater for use in fusing the end of a branch polyolefin pipe to the side wall of a main polyolefin pipe of specified radius has a first plate with a convex outer surface definable as a surface generated by rotating a first straight line about a first parallel line of origin at a radius equal to the specified radius of the main pipe and a concave inner surface, a second plate with a concave outer surface definable as a surface generated by rotating a second straight line about a second parallel line of origin at a radius equal to the specified radius of the main pipe and a convex inner surface and a heating element of substantially constant thickness disposed in laminar relationship between the first and second plates, the inner surfaces of the plates being contoured so that, with the heating element in laminar relationship therebetween, the lines of origin of the outer surfaces of the plates lie a common plane. A linkage pivotally connected at one end to the fixed base of the machine and pivotally connected at another end to the moving carriage of the machine is cooperable with heater to disengage the heater from the molten branch or main pipe from which the heater does not first disengage as the molten branch pipe is moved away from the molten main pipe.

Side wall fusion heater

Growing community of inventors

Tulsa, OK, United States of America

James R Perrault