# US 8,782,872 B2 · Multi-piece piping connector using grooves and method of connecting pipe using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,782,872 B2 - Document ID: US8782872B2 - Status: Granted - Kind: B2 - Application number: 13/644,011 - Filed: 2012-10-03 - Published: 2013-01-31 - Granted: 2014-07-22 - Earliest claimed: 2012-10-03 - Assignees: J. & M. Manufacturing Co., Inc. - Applicants: JM Eagle, Inc. - Inventors: Michael Lin; Lei Zhang - Web page: https://patentgrep.com/patent/US8782872B2 ## CPC - F16L 13/141: {by crimping or rolling from the outside} - F16L 2201/10: Indicators for correct coupling - Y10T 29/49908: Joining by deforming - Y10T 29/49909: Securing cup or tube between axially extending concentric annuli - Y10T 29/49913: by constricting outer annulus - Y10T 29/49925: Inward deformation of aperture or hollow body wall - Y10T 29/49927: Hollow body is axially joined cup or tube - F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method to connect piping and a piping connection, having the features of a ring connector configured to snugly fit around an external diameter of a pipe; and a piping shield connected to the ring connector, the piping shield having at least one observation window cut into the shield, wherein the piping shield covers an abutment end of the pipe to be connected, wherein a joint between the ring connector and the piping shield forms a connection. ## Claims ### Claim 1 A method to connect at least two pieces of pipe, comprising: placing a piping connector over an abutment end of a first piece of pipe until an inwardly extending front face of a piping shield of the piping connector extends over, contacts, and covers the abutment end of the first piece of pipe; inserting a spool piece into an opening defined by the piping shield and into the abutment end of the first of pipe until an outwardly extending shoulder of the spool piece contacts the piping shield; and crimping the piping connector to deform the piping around the spool piece, wherein the piping connector has a ring connector configured to fit around an external diameter of a pipe and the piping shield has at least one observation window cut into the piping shield adjacent to the front face of the piping shield and at a location at which a connection is made between the piping connector and the piping shield. ### Claim 2 (depends on 1) The method according to claim 1, wherein the connection between the piping shield and the ring connector is a groove arrangement. ### Claim 3 (depends on 1) The method according to claim 1, wherein the piping shield is made of plastic. ### Claim 4 (depends on 1) The method according to claim 1, wherein a number of the observation windows is two. ### Claim 5 (depends on 1) The method according to claim 1, wherein the ring connector is made of stainless steel material. ### Claim 6 (depends on 1) The method according to claim 1, wherein the ring connector is made of copper. ### Claim 7 (depends on 2) The method according to claim 2, wherein the groove arrangement further comprises: a first step, a depression and a second step on the ring connector, and a ring abutment end, a shield groove and a posterior end on the pipe shield. ### Claim 8 (depends on 1) The method according to claim 1, wherein the spool piece has a ridged surface. ### Claim 9 A method to connect at least two pieces of pipe, comprising: placing a piping connector over an abutment end of a first piece of pipe until an inwardly extending front face of a piping shield of the piping connector extends over, contacts, and covers the abutment end of the first piece of pipe; inserting a spool piece into an opening defined by the piping shield and into the abutment end of the first piece of pipe until an outwardly extending shoulder of the spool piece contacts the piping shield; and crimping the piping connector to deform the piping around the spool piece, wherein the piping connector includes a ring connector having a cylindrical body defining an internal diameter for fitting around an external diameter of the first piece of pipe, a first circumferential groove is defined by an external surface of the cylindrical body of the ring connector, the first circumferential groove is laterally disposed between a first step and a second step that orthogonally extend from the first circumferential groove, the first step extends from a first end of the ring connector to the first circumferential groove and has an outer diameter that is greater than an outer diameter of the first circumferential groove, and the second step has an outer diameter that is greater than the first step; and wherein the piping shield has a cylindrical body defining at least one observation window cut into the shield adjacent to the front face of the piping shield and at a location at which a connection is made between the piping connector and the piping shield, the piping shield defining a second circumferential groove around an interior surface, the second circumferential groove of the piping shield disposed between a posterior end of the piping shield having an inner diameter that is smaller than an inner diameter of the second circumferential groove of the piping shield and an abutment having an inner diameter that is smaller than the inner diameter of the posterior end, wherein the connection is formed when the first step of the ring connector is disposed within the second circumferential groove defined by the piping shield and when the posterior end of the piping shield is received within the first circumferential groove defined by the ring connector. ### Claim 10 (depends on 9) The method according to claim 9, wherein the piping shield is made of plastic. ### Claim 11 (depends on 9) The method according to claim 9, wherein a number of the observation windows is two. ### Claim 12 (depends on 9) The method according to claim 9, wherein the ring connector is made of stainless steel material. ### Claim 13 (depends on 9) The method according to claim 9, wherein the ring connector is made of copper. ### Claim 14 (depends on 9) The method according to claim 9, wherein the spool piece has a ridged surface.