DRAIN LINE ACCESS DEVICE
First Claim
1. An access device for inline installation on a drain line between a condensation producing source and a drain discharge, and said device comprising:
- a main body having an inner wall surface extending to an inner bottom surface and surrounding an interior cavity, and said main body including an input connecting port sized and configured for sealed connection with the drain line and an outlet connecting port sized and configured for sealed connection with an opposite facing end of the drain line, and a flow passage extending through said interior cavity between said input and outlet connecting ports and the flow passage being at least as large as a cross-sectional dimension of an interior flow passage of the drain line;
an injection port being structured and disposed for receiving a flow of pressurized gas or liquid and delivering the flow of pressurized gas or liquid into the interior chamber; and
a flapper valve in the interior cavity of said main body being in a normally raised position adjacent to said injection port and removed from a flow of drain line contents through the flow passage, and said flapper valve being structured and disposed for being forced downwards and away from said injection port and to a closed position when the flow of pressurized gas or liquid enters the interior chamber through said injection port for sealing the input connection port closed and blocking flow of the drain line contents from the input connecting port into the flow passage and directing the flow of pressurized gas through the opposing outlet connecting port and into the drain line.
3 Assignments
0 Petitions
Accused Products
Abstract
A drain line access device is provided for flushing HVACR drain lines. The device includes a main body having input and outlet connection ports on opposite ends for inline installation to a drain line, a flapper assembly sized and configured for seated placement in an interior cavity of the main body, and a removable top cover. The flapper assembly includes a flapper holder, a flapper, a flapper seat, and a spring hinge for rotatably urging the flapper into the normally raised position. An injection port is provided on the top cover for delivering a flow of pressurized gas or liquid for flushing out a clog in the drain line. In operation, delivery of pressurized gas or fluid into the drain line forces the flapper against the flapper seat, thereby sealing off one of the respective ends of the main body and directing the pressurized gas into the drain line.
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Citations
14 Claims
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1. An access device for inline installation on a drain line between a condensation producing source and a drain discharge, and said device comprising:
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a main body having an inner wall surface extending to an inner bottom surface and surrounding an interior cavity, and said main body including an input connecting port sized and configured for sealed connection with the drain line and an outlet connecting port sized and configured for sealed connection with an opposite facing end of the drain line, and a flow passage extending through said interior cavity between said input and outlet connecting ports and the flow passage being at least as large as a cross-sectional dimension of an interior flow passage of the drain line; an injection port being structured and disposed for receiving a flow of pressurized gas or liquid and delivering the flow of pressurized gas or liquid into the interior chamber; and a flapper valve in the interior cavity of said main body being in a normally raised position adjacent to said injection port and removed from a flow of drain line contents through the flow passage, and said flapper valve being structured and disposed for being forced downwards and away from said injection port and to a closed position when the flow of pressurized gas or liquid enters the interior chamber through said injection port for sealing the input connection port closed and blocking flow of the drain line contents from the input connecting port into the flow passage and directing the flow of pressurized gas through the opposing outlet connecting port and into the drain line. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An access device for inline installation on a drain line between a condensation producing source and a drain discharge, and said device comprising:
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a main body having an inner wall surface extending to an inner bottom surface and surrounding an interior cavity, and said main body including an input connecting port sized and configured for sealed connection with the drain line and an outlet connecting port sized and configured for sealed connection with an opposite facing end of the drain line, and said input and outlet connecting ports disposed in fluid flow communication with said interior cavity and defining a flow passage extending through said interior cavity and said input and outlet connecting ports; a top cover being releasably securable to said main body by a latch mechanism for accessing the interior cavity of said main body, and said top cover including an injection port being structured and disposed for receiving a flow of pressurized gas or liquid and delivering the flow of pressurized gas or liquid into the interior chamber; and a flapper assembly being sized and configured for removable insertion into the interior cavity of said main body, and said flapper assembly comprising; a flapper; a flapper holder structured for attachment to an inner facing side of said input connecting port, and said flapper holder having an outer surface wall configured for congruent receipt against the inner walls and inner bottom surface of said main body, and said flapper holder having an inner channel extending between openings at a front end and a rear end of said flapper holder; a flapper seat at the front end of said flapper holder; a spring hinge being structured and disposed for rotatably urging said flapper away from the flapper seat and into the normally raised position adjacent to said injection port and removed from the flow of drain line contents; and said flapper being structured and disposed for being forced against the flapper seat when the flow of pressurized gas or liquid enters the interior chamber through said injection port for sealing the inner channel of said flapper holder and directing the flow of pressurized gas or liquid through the opposing outlet connector port and into the drain line. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An access device for inline installation on a drain line between a condensation producing source and a drain discharge, and said device comprising:
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a main body having an inner wall surface extending from an open top to an inner bottom surface and surrounding an interior cavity, and said main body including an input connecting port sized and configured for sealed connection with the drain line and an outlet connecting port sized and configured for sealed connection with an opposite facing end of the drain line, and said input and outlet connecting ports disposed in fluid flow communication with said interior cavity and defining a flow passage extending through said interior cavity and said input and outlet connecting ports; a top cover structured and disposed for sealed attachment to the main body to completely close the open top and the top cover being separable from the open top to allow unobstructed access through the open top and into the interior cavity and said input and outlet connecting ports. - View Dependent Claims (14)
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Specification