Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7556560 | Crawlspace foundation vent covers Air vent covers for attachment to crawlspace walls, over or into air vent openings, to enclose the air vent openings and seal them against the entry of air and humidity from the atmosphere into the crawlspace. The preferred air vent covers comprises rectangular pane... | 07/07/2009 |
| 7258607 | Return air grille assembly The present disclosure provides an air grille assembly for use especially with air conditioning and heating ducts, having a detachable grille constructed of a relatively thick material, such as wood, synthetic wood, vinyl or the like. The grille can mount against th... | 08/21/2007 |
| 7249444 | Stabilized window structure and method of stabilizing window structures entirely or substantially entirely devoid of glass A stabilized window structure and method for stabilizing a window structure having a window frame entirely or substantially entirely devoid of glass includes a patch removably secured over the window frame to cover the opening in its entirety and a body of unifying ... | 07/31/2007 |
| 7232369 | System and method for providing heating, ventilation and air conditioning An under-floor, perimeter-based heating ventilation and air conditioning pressurized air delivery system for use in a space includes a ventilation module, to be located in the floor, a multi-deflection linear bar grille covering the ventilation module, for diffusing... | 06/19/2007 |
| 7128643 | Removable vent having a filter for use in a building foundation A removable ventilator is equipped to hold an air filter, the ventilator being designed for placement in a building foundation, for example between concrete blocks. The front of the ventilator faces away from the building when the ventilator is installed. The rear o... | 10/31/2006 |
| 7097557 | Insulated crawlspace vent apparatus, and methods of installing same An insulated crawlspace vent to provide airflow in a crawlspace in the summer and insulate it in the winter. An aluminum extrusion built as a picture frame is glued to the opening in the foundation of the crawlspace. An insulated door closes from the outside and is ... | 08/29/2006 |
| 6875102 | Moisture resistant wall vent A moisture resistant wall vent for use in an exterior wall of a building includes a louvered front panel substantially in the plane of the wall surface whether the wall has a stucco finish, conventional wall finish or a brick surface. Alternatively, the louvered pan... | 04/05/2005 |
| 6746324 | Combustion air wall vent A combustion air vent for use with an extension wall of a building includes a louvered panel substantially in the plane of the stucco wall surface. Top, bottom, left and right side panels extend from the edges of the louvered panel for a distance substantially comme... | 06/08/2004 |
| 6688967 | Ventilated cover A molded insert for attachment to material of a cover intended for outdoor use to cover an article has a front face, a back face, and a plurality of openings through its thickness. Each opening has a larger area in the front face than in the back face, an... | 02/10/2004 |
| 6669554 | Ventilating sill plate for crawl spaces A hidden ventilating sill plate is fundamentally a new building product, installed along the top surface of the exterior perimeter foundation. It replaces the existing wood sill plate. The invention has a continuous set of air slot channels of a proscribe... | 12/30/2003 |
| 6620040 | Moisture venting structure for the construction of walls The present invention provides a moisture venting structure for use in the construction of walls. It comprises a sheet of wall construction material. The sheet of material has a first side and a second side, wherein the first side has a plurality of chann... | 09/16/2003 |
| 6589112 | Duct silencer A ventilation duct and methods of ventilation are disclosed. The ventilation duct provides a plurality of inner and outer sound absorbing members. The inner and outer sound absorbing members lying in separate planes with portions of the inner and outer so... | 07/08/2003 |
| 6575826 | Security air vent Air vent for protecting the public potable water system against terrorism and sabotage. Conventional air vents allow the movement of air in and out of an enclosed reservoir structure but do not stop the penetration of liquids or solids. The present invent... | 06/10/2003 |
| 6431980 | Combustion air security vent A vent assembly for mounting in a passageway extending through an exterior wall to provide ventilation to the space bounded by the exterior wall includes an apertured panel exteriorly juxtaposed with a security grate to prevent unauthorized intrusion thro... | 08/13/2002 |
| 6149514 | Cover for foundation vents, kit and method for production thereof A method for fabricating a vent cover (10) with an insulating sheet (11) bonded on an inside face of an outer sheet (12). A sheet (11E) which serves as a gasket is provided on the inside face (12A) of the outer sheet. A kit (14) is provided with a preform... | 11/21/2000 |
| 6113488 | Method of retrofitting ventilation systems with security grilles A method of retrofitting ventilation systems with security grilles. A first step involves providing a security grille that is larger in size than an existing air duct to be covered by the security grille. The security grille has a flow area sufficient to ... | 09/05/2000 |
| 5829267 | Fresh air inlet and damper An air inlet and damper arrangement. The arrangement comprises a system housing with an external wall having a fresh air inlet; and an inlet air enclosure located within the system housing adjacent the external wall and arranged about the air inlet. The e... | 11/03/1998 |
| 5791984 | Air handling system with snow removal capabilities A process and system is provided for treating the air being taken into a building so as to remove moisture, especially snow, from the intake air. The system includes a series of air passages through the building; generating a flow of air through the serie... | 08/11/1998 |
| 5759098 | Push-in cover vent A one-piece air circulation vent for piercing and maintaining a ventilation opening in a flexible cover or the like. The vent includes a stiff, but resilient body structure which comprises a main panel member generally triangular in plan and defining conv... | 06/02/1998 |
| 5727998 | Side vent frame for a recreational vehicle A vent cover assembly for a side vent of a recreational vehicle which includes a frame to be mounted at the vent opening and a vent cover removably retained within the frame. The frame has a planar main wall which forms a rectangular-shaped central openin... | 03/17/1998 |
| 5685290 | Combustion air kit A combustion air kit for providing a source of external air to feed a fire in a firebox is installed during new construction or as a retrofit unit into existing fireplaces. A masonry air vent brick having a hole therein air flow is included in the combust... | 11/11/1997 |
| 5372543 | Vent for enclosures A vent arrangement for enclosures that prevents the penetration of a pry bar. The vent arrangement includes a first predetermined pattern of openings of predetermined shape and dimensions provided at the exterior wall of the enclosure. The dimensions of t... | 12/13/1994 |
| 5292281 | Vertical soffit vent A vertical soffit vent in which a length of frieze board is affixed adjacent a length of soffit molding, with a unique arrangement of vents--volutes--in between. More particularly, a length of frieze board having particularly shaped and dimensioned volute... | 03/08/1994 |
| 5192244 | Air vent stopper An air vent stopper is provided for a ventilation grill having a plurality of ribs mounted within an opening in a building wall. The air vent stopper consists of a plate being of a size and shape to completely cover over the ribs in the ventilation grill.... | 03/09/1993 |
| 5167104 | Weep hole cover A weep hole cover for covering existing weep holes in masonry walls in a manner to permit moisture drainage from and ventilation of the existing weep holes while preventing entry of insects into said weep holes. The weep hole cover includes a top planar s... | 12/01/1992 |
| 4898085 | Push-in flexible cover vent A pair of similarly transversely bowed and superposed panel members are secured together and are V-shaped in plan. The apex portion of one panel member disposed to the concave side of the other panel member is sharpened and the panel members are secured t... | 02/06/1990 |
| 4821628 | Shallow-profile foundation ventilator A shallow-profile foundation ventilator includes a body with at least one vent opening extending therethrough and covered by a screen. A skirt is connected to the body and extends perpendicularly from the body's back surface. Installation clips are attach... | 04/18/1989 |
| 4794852 | Inlet Device An inlet device for the wall of a building for example an animal barn comprises a simple moulded rectangular body through which the air can pass having an open mouth at one end and an inlet surface in a lower downwardly facing surface on the outer side of... | 01/03/1989 |
| 4676145 | Ventilating apparatus for building foundations in both brick and siding type structures A ventilating appartus for installation in a ventilation opening in a building foundation includes a peripheral border having detachable lateral extension tabs for selective retention to be mounted in a mortar joint in brick-type construction and, alterna... | 06/30/1987 |
| 4669371 | Ventilator mounting spring A spring clip for mounting a ventilator in an opening provided in a foundation or other wall structure. Preferably, two spring clips are used to retain the ventilator in the opening, one spring clip on each side of the ventilator. Each spring clip is made... | 06/02/1987 |
| 4637299 | Vent opening for portable building wall A vent opening for a portable building wall forming panel made of a thin, plastic sheet is formed by a series of aligned, roughly rectangular shaped, box-like depressions in the sheet to provide a series of depressed longitudinal and end walls which are i... | 01/20/1987 |
| 4587892 | Foundation ventilator The mounting frame of the ventilator is formed of molded plastic so that it contracts when the temperature is low and expands when the temperature is high. In order to accommodate such expansion and contraction, a screw is supported for longitudinal adjus... | 05/13/1986 |
| 4469018 | Energy-saving closure for foundation vents To cover a foundation vent opening in a building having applied siding, a rectangular piece of siding is sized to fit the opening, insulation is attached to the rear or inside of the siding piece, and mounting flanges are used to secure the closure in the... | 09/04/1984 |
| 4274330 | Ventilator and mounting frame assembly The mounting frame of the present invention is constructed for being easily installed in the wall of a building from the exterior side of the wall using only a simple hand tool, such as a screwdriver, and for slidingly receiving a ventilator in a quick an... | 06/23/1981 |
| 4213379 | Emergency ventilation system for enclosed livestock confinement structures An emergency ventilation system especially adapted for use with an electrically-powered fan driven ventilation system in an enclosed livestock confinement structure includes solenoid actuated, hydraulically driven ventilation door control apparatus which ... | 07/22/1980 |
| 4026082 | Vent frames A flared peripheral wall has an inner end internal flange forming the margin of a vent opening and an outer end external flange. Ribs projecting outward from the peripheral wall can be embedded in concrete to prevent displacement of the wall. Screen cloth... | 05/31/1977 |
| 4019429 | Ventilator A ventilator, constructed to serve as a horizontal rail in a building component, includes a pair of spaced apertured plates, the aperture of one being an air inlet vertically spaced below that of the other which is an air outlet, and filter and baffle mea... | 04/26/1977 |
| 4017282 | Rain retardant screen A device is presented which prevents rain drops from penetrating and which allows light and gas to be transmitted in a rain-free environment. The device is a screen assembly whose outer surface (toward outdoors) has a contact angle with water of greater t... | 04/12/1977 |
