Anodeless riser assembly
AssigneeCentral Plastics Company
InventorBobby W. Sehorn
Life of this patent
Estimating the term…
Abstract
An improved gas meter riser assembly that is constructed in a manner that allows all welding to be carried out prior to application of protective coating thereby to maintain uniform epoxy cover. The invention consists of an outer riser pipe having a nipple welded thereon, which nipple is swaged to define a lower neck for insertion within the riser pipe. After welding and coating the nipple/pipe riser casing, an interior plastic pipe having an adaptor insert is fed downward through riser pipe until the adaptor insert is sealingly force-fit down within the swaged lower neck of the nipple. Selected spacers are provided between the plastic pipe and the pipe riser, and the lower end of the pipe riser may be suitably capped through a protective moisture seal.
Claims14
A riser assembly for gas meter connection comprising:
- an outer pipe body formed as a first portion have a terminus for underground disposition and an angularly bent riser portion;
- nipple means for meter connection secured within said outer pipe body riser portion and defining a critical inside diameter;
- adapter means having an axial bore and a collar poriton having an outside diameter that enables close reception within said nipple means, and extending into a shank portion of diameter less than said critical inside diameter and including a plurality of gripping ridges formed peripherally therearound;
- and
- plastic pipe of selected length having outside diameter of a size to be closely received through said critical inside diameter and being tightly secured over said adapter means shank portion and gripping ridges;
- whereby said assembled plastic pipe and adapter means can be slidingly inserted through and nipple means and outer pipe body until said adapter means with plastic pipe is seated inside of said nipple means.
Dependencies are inferred from the claim text.