초록 ▼

A sewer line coupling device to facilitate attachment of a recreational vehicle sewer line to a fixed waste pipe. The coupling device comprising a main body having a second end for insertion into the waste pipe. A movable member is movable relative to the main body and a sealing sleeve is supported

A sewer line coupling device to facilitate attachment of a recreational vehicle sewer line to a fixed waste pipe. The coupling device comprising a main body having a second end for insertion into the waste pipe. A movable member is movable relative to the main body and a sealing sleeve is supported by the main body adjacent the second end. One end of the sealing sleeve is affixed to the main body while the other end is coupled to the movable member. When the movable member is moved in a first direction, a minimum dimension of the sealing sleeve is achieved to facilitate insertion into the waste pipe and, when the movable member is moved in an opposite direction, a maximum dimension of the sealing sleeve is achieved to facilitate formation of a seal with the waste pipe. A flange is supported by the main body between the first end and the second end thereof.

대표청구항 ▼

I claim: 1. A coupling device, for engaging with a waste pipe, comprising: a main body having an exterior surface and a first end and an opposed second end, for insertion into an opening of the waste pipe; only a single movable member being freely slidable axially along the exterior surface of the

I claim: 1. A coupling device, for engaging with a waste pipe, comprising: a main body having an exterior surface and a first end and an opposed second end, for insertion into an opening of the waste pipe; only a single movable member being freely slidable axially along the exterior surface of the main body between the first and the second end of the main body; only a single sealing sleeve supported by the main body, a second end of the sealing sleeve being directly affixed to the main body adjacent the second end thereof while a first end of the sealing sleeve being directly connected to the movable member, and the movable member being located between the first end of the main body and the sealing sleeve; wherein the sealing sleeve, in a normal unbiased state, has an intermediate section with a transverse dimension which is greater than a transverse dimension of both the first and second ends of the sealing sleeve; whereby when the movable member is moved along the main body in a first direction toward the first end of the main body, minimum dimension of the sealing sleeve is achieved to facilitate insertion of the second end of the main body into the waste pipe and, when the movable member is moved in an opposite second direction along the main body toward the second end of the main body, a maximum dimension of the sealing sleeve is achieved to facilitate formation of a seal with an inner surface of the waste pipe. 2. The coupling device according to claim 1, wherein the first end of the main body matingly engages with a remote free end of a sewer line, and the main body, the first end and the second end of the main body are all hollow to facilitate passage of waste through the main body. 3. The coupling device according to claim 1, wherein the main body is closed to prevent passage therethrough so that the coupling device forms a cap for engaging with and sealing the waste pipe. 4. The coupling device according to claim 1, wherein the movable member includes a collar and the first end of the sealing sleeve is secured to the collar. 5. The coupling device according to claim 4, wherein the movable member and the collar both have a throughbore extending therethrough to facilitate sliding movement of the movable member and the collar with respect to the exterior surface of the main body. 6. The coupling device according to claim 1, wherein an annular groove is formed in an exterior surface of the main body adjacent the second end thereof, and the second end at the sealing sleeve is secured to the annular groove by a fastener. 7. The coupling device according to claim 1, wherein the movable member includes a collar and the collar has an annular groove formed in an exterior surface thereof, and the first end of the sealing sleeve is secured to the annular groove by a fastener. 8. The coupling device according to claim 1, wherein a flange is supported by the main body between the first end of the main body and the movable member. 9. The coupling device according to claim 8, wherein the flange supports an annular shoulder which axially projects toward the first end of the main body and the annular shoulder, the flange and the main body together form a recessed area for accommodating a leading portion of the sewer line. 10. The coupling device according to claim 8, wherein the flange is provided with a plurality of notches and the movable member is provided with a plurality of corresponding apertures and a plurality of bolts interconnect the flange with the movable member, and at least one spring is provided for biasing the movable member away from the flange. 11. The coupling device according to claim 1, wherein the first end of the main body forms an angle of between 0 and 90 degrees with respect to a longitudinal axis defined by a remainder of the main body. 12. The coupling device according to claim 1, wherein the exterior surface of the first end of the main body has an external thread which facilitates engagement with a sewer line to facilitate releasable connection of the coupling device to the sewer line. 13. The coupling device according to claim 1, wherein the exterior surface of the first end of the main body has an external thread which facilitates engagement with an internal Thread of an adaptor, connected to a sewer line, to facilitate releasable connection of the coupling device to the sewer line. 14. The coupling device according to claim 1, wherein the main body, the flange and me movable member are all manufactured from one or more of a rigid polymeric material, PVC, ABS, a metal and a metal alloy and the sealing sleeve is manufactured from one or more of rubber and TPE. 15. A coupling device, for engaging with a waste pipe, comprising: a main body having a second end for insertion into an opening of the waste pipe and an opposed first end, and the main body having an exterior surface; a flange being supported by the main body between the first end and the second end of the main body; a single movable member, having a collar, being freely slidable axially along the exterior surface of the main body between the first and the second end of the main body; and a single sealing sleeve supported by the main body, a second end of the sealing sleeve being directly affixed to the main body adjacent the second end thereof while a first end of the sealing sleeve being directly connected to the collar of the movable member, and the movable member being located between the first end of the main body and the sealing sleeve; wherein an exterior diameter of an intermediate region of the sealing sleeve, in a relaxed unbiased state, is greater than an exterior diameter of the first end of the sealing sleeve and an exterior diameter of the second end of the sealing sleeve; whereby when the movable member is moved along the main body in a first direction toward the first end of the main body, a minimum dimension of the sealing sleeve is achieved to facilitate insertion of the second end of the main body into the waste pipe and, when the movable member is moved in an opposite second direction along the main body toward the second end of the main body, a maximum dimension of the sealing sleeve is achieved to facilitate formation of a seal with an inner surface of the waste pipe. 16. The coupling device according to claim 15, wherein the first end of the main body matingly engages with a remote free end of a sewer line, and the main body, the first end and the second end of the main body are all hollow to facilitate passage of waste through the main body. 17. The coupling device according to claim 15, wherein the main body is closed to prevent passage therethrough so that the coupling device forms a cap for engaging with and sealing the waste pipe. 18. A method of engaging a coupling device to a waste pipe, the method comprising the steps of: forming a main body with a second end which is sized for insertion into an opening of the waste pipe and the main body having an opposed first end and an exterior surface; only providing the main body with a single movable member which is freely slidable axially along the exterior surface of the main body between the first and the second end of the main body; only supporting a single sealing sleeve on the main body with the sealing sleeve, in a normal unbiased state, having an intermediate section with a transverse dimension which is greater than a transverse dimension of both a first end thereof and a second end thereof; directly affixing a second end of the sealing sleeve to the main body, adjacent the second end thereof, and directly affixing a first end of the sealing sleeve to the movable member with the movable member being located between the first end of the main body end the sealing sleeve; and moving the movable member along the main body in a first direction toward the first end of the main body, to minimize a dimension of the sealing sleeve and facilitate insertion of the second end of the main body into the waste pipe; end moving the movable member in an opposite second direction along the main body toward the second end of the main body so as maximize the dimension of the sealing sleeve and facilitate formation of a seal with an inner surface of the waste pipe. 19. The method according to claim 18, further comprising the step of forming the main body to be one of hollow and facilitate passage of waste through the main body and dosed so as to prevent passage of waste therethrough.