Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7232370 | Adjustable roof jack with flexible boot An adjustable roof jack adapted for mounting on a flat or pitched roof. The roof jack is connected to a lower end of an air discharge duct from an air conditioning unit and to the top of an air supply duct in the roof. The roof jack includes an angular-shaped sheet ... | 06/19/2007 |
| 7114301 | Flashing for inclined roof and method for installing the same Disclosed is a flashing for weatherproofing an aperture made in an inclined roof to allow passage of a vertical member such as chimney through the inclined roof. This flashing has a base member adapted to be mounted over the aperture and a surrounding member that is... | 10/03/2006 |
| 6997801 | Roofing vent with sliding collar A roofing vent that includes a base a duct extending from the base. The duct includes a first end attached to the base and a second end having a hood or cover over the second end. A collar having an aperture therethrough is mounted from the duct such that the duct e... | 02/14/2006 |
| 6932690 | Adjustable roof ventilator jack An adjustable roof ventilator jack for operationally coupling a roof ventilator to a venting aperture extending through a sloped roof. The jack includes a base section having base section front, rear and side walls. The base section is configured so as to be angled ... | 08/23/2005 |
| 6691469 | Flashing for roof penetrations A flashing for sealing about a roof penetration includes a first sheet having a first edge. The first sheet includes a substantially planar portion and a portion that is inclined with respect to the planar portion. The inclined portion has a recess open a... | 02/17/2004 |
| 6601351 | Pipe flange system A pipe flange system for facilitating replacement of flashing around an electrical service entrance pipe on a roof. The pipe flange system includes a lower flange assembly for engaging a service entrance pipe which includes a lower base portion designed f... | 08/05/2003 |
| 6260815 | Adjustable furnace support Two telescopically interconnected support members of an adjustable furnace support are secured together by mechanical fasteners. The mechanical fasteners maintain the top end of one of the support members a fixed predetermined distance from the bottom of ... | 07/17/2001 |
| 6163960 | Static ventilator including a corrugated portion A static ventilator provided with a deformable corrugated portion is described herein. The static ventilator is provided with a tubular base to be installed to the roof, a sleeve to be connected to the tubular base and a cover to be installed to the free ... | 12/26/2000 |
| 5694724 | Vent pipe cover A plumbing stack vent cover or guard is disclosed which is used for flashing. The cover includes a body member and a base member which are preferably constructed integral. The cover is preferably constructed from a non-metallic material and is also prefer... | 12/09/1997 |
| 5409266 | Adjustable roof jack An adjustable roof jack interconnects a roof-mounted air handler with a duct opening through the roof of a building in a full range from flat to a 6-in-12 pitch; so that a single roof jack is capable of use in substantially all standard construction. To a... | 04/25/1995 |
| 5317845 | Flashing for buildings A flashing product being an elongated flashing strip made of resilient material having a member or members attached to one marginal edge portion of the flashing strip and extending in the direction of elongation thereof. The member or members each being a... | 06/07/1994 |
| 5176408 | Seal device for pipes passing through roof structures A seal device for providing a weather seal between an elongated member such as a pipe, and a surface, such as a roof of a building, through which the pipe extends. The seal device has an apertured base member of resilient material with one end in contact ... | 01/05/1993 |
| 5010700 | Roof jack A roof jack or vent seal which is unitarily vacuum formed of polypropylene synthetic rubber polymer and a U.V. stabilized pigment and which has a planar roof covering with a central upstanding frusto-conical section including stepped graduated portions, w... | 04/30/1991 |
| 4965971 | Roof mounting A roof mounting 1 for use in giving a rise pipe 2 access through a roof 3 comprising a plate 4, 22 having a circular hole 5 therein, a connector 6 embodying a spherical formation 7 which fits closely in the circular hole in the plate, the connector having... | 10/30/1990 |
| 4893608 | Furnace roof jack with pivoting flashing plate A furnace roof jack is provided with a pivoting flashing plate which can be attached to pitched roofs having various pitch angles. The roof jack includes an elongated generally cylindrical tube. An enlarged portion of the tube has a generally spherical ou... | 01/16/1990 |
| 4888923 | Cupola Mount A prefabricated cupola and the like for mounting over a roof ridge comprises a rectangular body and a mounting bracket. The mounting bracket comprises two clam-shell like opposed cylindrical segments that fit under the bottom edges of and fill the gaps be... | 12/26/1989 |
| 4843794 | Roofing slab A roofing slab (1) has a roof lead-through in the form of a pipe (2) of adjustable inclination which extends from beneath the roofing slab to a point above it via a correspondingly dimensioned passage hole provided in the region of the vertex of a dome of... | 07/04/1989 |
| 4781401 | Adjustable jack for mounting on a duct bend The invention comprises an economical, adjustable duct section which allows an installer to mount and connect a curved end thereof to an opening in an air duct bend and to adjust the other end to a desired predetermined angle with respect to the horizonta... | 11/01/1988 |
| 4563847 | Universal flashing for roof vent pipes An improvement to a universal flashing for roof top and vent pipe geometries characterized by differing pipe diameters and roof slope angles. The present improvement relates to a ring collar assembly which comprises a plurality of stepped sealing portions... | 01/14/1986 |
| 4526091 | Adjustable roof jack The invention comprises an economical, adjustable roof jack for connecting a roof mounted air handler to an air duct therebelow, wherein a single sheet metal pattern comprises a portion of a lower and upper section of duct and wherein the duct sections ar... | 07/02/1985 |
| 4442643 | Vent pipe insulating sleeve An insulating sleeve designed for positioning over a sewer vent pipe associated with a dwelling includes a tubular-shaped member constructed of insulating material which is covered by a protective outer shell. Additionally, the ends of the sleeve are prov... | 04/17/1984 |
| 4437687 | Waterproof assembly or sealing an aperture housing a conduit Disclosed is apparatus for providing an extension of a conduit through an aperture in a roof or a floor of a building and for providing a seal around the aperture, the apparatus including a conduit extension adapted to extend through the aperture in the r... | 03/20/1984 |
| 4120129 | Pipe flashing unit A roof mountable pipe flashing unit allows penetration of the roof surface by a single pipe while effectively weather-proofing the site of penetration. A selectively separable sealing element enables a weathertight seal to be formed with pipes whose diame... | 10/17/1978 |
| 4010578 | Roof flashing structure A roof flashing structure for use in forming a seal around a pipe on either flat roofs or roofs pitched at various common angles can be constructed utilizing a generally flat, imperforate plate having a centrally located opening. Such a plate carries an u... | 03/08/1977 |
| 3945163 | ABS thermoplastic curb assembly An improved single unit multi-purpose roof penetrating curb. The curb is a plastic box with one large upstanding inverted cup-like section on the top surface thereof. Four smaller upstanding inverted cup-like sections are equidistantly spaced on the upper... | 03/23/1976 |
