Abstract: A plunger device comprising a piston pump assembly and a plunger head that is sized to fit inside a trap of a toilet and downstream of a siphon jet of the toilet. Pressurized air from the piston pump assembly is used to dislodge an obstruction and push it down the toilet drain. The plunger is easy to use, easy to clean and can be adapted to use different plunger heads to unclog different types of drains other than toilet drains.

Abstract: A toilet plunger device relating to a hydraulic plunger that may be inserted into a toilet to create a seal beyond or below the siphon jet that, further, may employ pressurized water to dislodge a clogged toilet drain. The plunger includes an elongated carrier body with a coupling, a first flange, a second flange, and a resilient foam body. This assembly is connected to an elongated tubular wand that is connected to a trigger valve which, in turn, is connected to a source of pressurized liquid. The foam body is inserted into the toilet drain and creates a tight seal around the drain. The trigger valve then operatively releases a flow of pressurized liquid through the tubular wand and the elongated carrier body to break up debris and clear the drain.

Abstract: An arbor apparatus for mounting an attachment to a rotary tool includes a mandrel with a drive stage insertable into a passage in a drive boss such that rotation of the mandrel rotates the boss. The boss has a polygonal drive head engageable with the drive opening of the attachment. One end of the mandrel has a locking plate that approaches the drive head when the mandrel is inserted into the boss. The locking plate is sized to pass through the drive opening while also partially extending radially beyond the edge of the drive head. With the mandrel inserted through the boss, the locking plate is passed through the drive opening of the attachment. With a gap being maintained between the locking plate and the drive head, the mandrel is manually rotated to allow the drive head to enter the drive opening, simultaneously causing portions of the locking plate to extend beyond the edges of the drive opening.

Abstract: An arbor assembly for mounting an attachment, such as a cup saw blade to a rotary drive, comprising a mandrel that has a spindle for coupling to a rotary drive, a drive shaft and a locking plate; a boss with a drive head that rotationally engages the cup saw blade and with a bore that rotationally engages the drive shaft of the mandrel, and a means for reversibly locking the cup saw blade between the locking plate and the boss, in rotational engagement with the drive head and the mandrel. The arbor assembly is robust and easy to use, for example with conventional electric drills.