Abstract: The system disclosed herein is directed to a plunger adapted for use with a protective sleeve for shielding contaminants from the plunger. In one example, a plunger has a handle having a first end and a second end. A flexible cup is coupled to the first end of the handle. The flexible cup has an interior surface and an exterior surface. An inlet is disposed on the exterior surface of the flexible cup. A through-hole is located in the flexible cup offset from the inlet. A connector is coupled to the inlet between the flexible cup and the handle. The connector is configured to join the first end of the handle to the flexible cup.

Abstract: A disclosed plunging apparatus, system and method includes applying a graduated accordian suction apparatus defining an oval opening and gradually larger plunging sections, wherein a cross section of each gradually larger plunging section resembles a tear drop perimeter having a globular form at a bottom tapering to an apogee point top. The method also includes securing a projecting lip around the oval opening adjacent a toilet bowl drain. The method additionally includes commencing a plunging action via a smallest plunging section proximal the oval opening. The method further includes enabling the plunging action via a collapsible webbing there between the graduated plunging sections. The method yet includes continuing the plunging action via a largest plunging section distal the oval opening. The method even includes repeating the plunging action via a handle attached to one of the graduated plunging sections.

Abstract: A device to clear a blockage from an HVACR condensate drain line. A piston connected to a rod with a handle is inserted directly into the distal or outlet end of a condensate drain pipe and then rapidly withdrawn to create a vacuum or suction within the drain line. When sufficient suction pressure is created, it will dislodge a blockage in the drain line. Typically the piston has a proximal end with a diameter slightly greater than the inside diameter of the condensate drain pipe. Upon removal of the device from the drain pipe, the proximal end is caused to expand to its full diameter, creating an airtight and fluid tight seal with the inner diameter of the drain pipe, allowing for the creation of negative pressure and/or suction upstream to dislodge the blockage.

Abstract: A plunger can include a head configured to engage an opening to a conduit. The plunger can also include a one-way valve that allows fluid flow through the head and out of the plunger, but that inhibits fluid flow through the head and into the plunger. The plunger can also include a pressurizing mechanism that forces fluid to flow through the head and out of the plunger. The mechanism can be detachable from the head. A head of a plunger can be positioned to engage an opening of an obstructed conduit. A force can be applied to the plunger, and the plunger can increase a fluid pressure within the conduit in response to the force. The force on the plunger can be released, and the plunger can maintain the fluid pressure within the conduit at an increased level after the force is released.

Abstract: A vented toilet plunger that includes a cup and a handle. The cup has a vent valve assembly that extends through a high point of the cup. The vent valve assembly is a check valve that contains a ball that normally allows communication through the check valve. The ball of the check valve is of a weight that is not overcome by air, but is overcome by water, so as to allow communication through the check valve when the cup is first put into the water so as to allow the air trapped in the cup to be vented out, but once the air is vented out, the water fills the cup and moves the ball of the check valve to block communication through the check valve so as not to allow the water to pass therethrough.

Abstract: A plunger device for unblocking a clogged drain or pipe, comprises a valve housing interposed between a handle and a suction cup; a valve seat having an opening for communicating the cup with the housing; a fluid outlet formed in the housing to provide a fluid path to the outside of the device; a valve ball positioned in the housing to close said opening of the valve seat and said fluid outlet when said ball is positioned on the seat, a bolt moveable in said housing to abut said ball for locking the ball between the bolt and said seat, thereby causing fluid under pressure to flow in one direction-into the clogged drain, the bolt being movable away from said ball to unlock the ball and open said fluid outlet, said ball moving freely inside the valve housing when said ball is unlocked, thereby enabling fluid to flow in the opposite direction only—out from the clogged drain; and switch means associated with the bolt and lock and unlock the valve ball when clearing the clogged drain.

Abstract: A plunger assembly having a plunger portion and an elongated handle with a central bore. The plunger portion has a bottom opening sized for fluid communication with a drain opening. The top end of the plunger portion has a threaded opening sized to receive the threaded end of the elongated handle, and allowing for fluid communication with the central bore. A check valve assembly rests on an annular seat formed inside the bottom of the elongated handle proximate the opening formed in the top end of the plunger portion. The check valve serves to allow airflow into the top end of the plunger portion while preventing airflow out of the top end of the plunger portion to prevent undesired backflow. Further regulation of the air flow into the plunger portion is achieved by providing a cap, at the top of the elongated handle for selectively allowing airflow into and through the central bore.