Roof drain
OwnerKunibert Thalerinventor
Life of this patent
Estimating the term…
Abstract
A roof drain for draining rainwater from a roof. A bell-like strainer is supported by a compression/tension unit including resilient means, which unit is in turn mounted to a drainage sleeve that communicates with a leader. The strainer is secured to the drainage sleeve by a threaded bolt that passes through bores in the strainer and the compression/tension unit, and engages a nut received by the resilient means. Tightening the bolt moves the strainer downwardly into a substantially watertight fit with roofing membrane interposed between a skirt of the strainer and a collar on the drainage sleeve. The resilient means, which may be resilient material, a spring or the like, provides continuous tension between the strainer and the drainage sleeve.
Claims25
A roof drain for use with a leader, comprising:
- a strainer;
- a drainage sleeve;
- fastening means for securing the strainer to the drainage sleeve so that water can drain through the strainer and the drainage sleeve into the leader;
- and
- a compression/tension unit including resilient means for providing continuous tension between the strainer and the drainage sleeve, and a frame that supports and retains the resilient means, the frame including:
- a rim for mounting the frame to the drainage sleeve;
- a tension holder that retains the resilient means;
- and
- radial struts that extend downwardly from the tension holder to connect the tension holder to the rim;
- wherein the strainer and the drainage sleeve form a substantially watertight seal with each other.
A roof drain for use with a leader, comprising:
- a drainage sleeve having a lower end for receipt within the leader and an upper surrounding collar;
- a holder connected to the sleeve and centered above the collar, the holder having a downwardly open portion receiving a resilient member therein and a top wall having a central aperture therein;
- a strainer for mounting atop the sleeve, the strainer having a lower rim which mates with the collar of the sleeve for receipt of a roofing membrane therebetween and a top wall located above the top wall of the holder and having an aperture located above the aperture of the top wall of the holder;
- a said resilient member received within the downwardly open portion of the holder, the resilient member having an upright central axial aperture running from end to end, the respective apertures of the resilient member, the holder and the strainer being in communication with each other;
- a fastener extending through the communicating apertures, the fastener having a lower enlarged head and an upper tightening means above the top wall of the strainer connected to the head for drawing the head upwardly toward the top wall of the holder to compress the resilient member therebetween so as to generate a downwardly acting force on the strainer through the tightening means and thereby force the rim of the strainer downwardly against said roofing membrane located between the rim and collar to provide a watertight seal between the membrane and collar.
Dependencies are inferred from the claim text.