Patent ID: 6247190
Filing Date: 2001-06-19
Classification: E03C

Abstract:
A plunger apparatus comprising:a collapsible plunger portion having a hollow interior and an opening formed in its bottom end adapted for sealing engagement with a drain opening and an opening formed end its top end adapted for threaded engagement with an elongated handle having a central bore, the elongated handle having a top end and a threaded bottom end, said threaded bottom end engaged with the opening formed in the top end of the plunger portion to allow fluid communication between said central bore and said hollow interior of said plunger portion;a check valve positioned within said central bore proximate the bottom end of said elongated handle, said check valve oriented to prevent airflow into said bore from said hollow interior;a cap secured at said top end of said elongated handle, said cap having a sealing member formed therein allowing for selectively allowing airflow through an opening in said top end of said handle;said sealing member extending from a top interior portion of said cap, said cap further having downwardly extending fingers having thread members formed on interior surfaces for threaded engagement with exterior threads formed in the top end of said elongated handle.