Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7117559 | Support system for pocket doors A support system for mounting a door, such as a pocket door, on an overhead track is disclosed. The system cooperates with carriage that includes a support rod having a discontinuity at a lower end. The system uses bracket that is adapted for mounting along the uppe... | 10/10/2006 |
| 6539936 | Fireplace and decorative removable cover therefor A combination of a fireplace and a decorative removable cover therefor is provided. The fireplace may include an enclosure having a front access opening and a frame positioned within the front access opening. Further, the decorative removable cover may in... | 04/01/2003 |
| 6298844 | Fireplace draft seal The herein taught invention generally relates to domestic fireplaces particularly of the wood burning type and a method of, and apparatus for sealing such fireplaces to prevent the loss of conditioned air (heated and/or cooled) from the living quarters th... | 10/09/2001 |
| 6073625 | Fireplace opening closure A fireplace opening closure for closing the front opening of a fireplace when the fireplace is not in use. The fireplace opening closure includes a generally rectangular board with front and back faces, top and bottom edges, and a pair of side edges exten... | 06/13/2000 |
| 6055977 | Windows or the like of heaters, these windows or the like being equipped with an expansion compensation device, and device for this purpose Disclosed is a window construction for a heater, which generally has a frame and at least one panel fitted on the frame. The frame and the at least one panel are usually made of different materials having different expansion coefficients. An expansion com... | 05/02/2000 |
| 5167219 | Frame assembly for a fireplace opening A frame assembly (10) for a fireplace opening (12) comprises a frame member (24) and a clip (26). The frame member (24) includes segments (28, 30, 32, and 34) of discrete length that are fitted to sidewall portions (14, 16, 18, and 20) of the fireplace op... | 12/01/1992 |
| 4884556 | Zero clearance fireplace A prefabricated zero clearance fireplace includes a combustion chamber having a front opening, a glass door sized and shaped for positioning over and sealing the opening and a guide system for guiding vertical movement of the door between a lowered positi... | 12/05/1989 |
| 4817585 | Firebox door arrangement A semi-frameless door, per se, and in combination with a firebox opening and the like, utilizes a specially configured spacer frame to seal inner and outer glass panes and also, if desired, the firebox opening. Retainer plates affixed only to the outer gl... | 04/04/1989 |
| 4787365 | Double walled fireplace insert and method for loading from the outside A double walled fireplace insert is shown with an inner firebox and an outer shell to provide convection air channels between the parallel walls of the inner and outer units. A front panel is integral with the outer shell, and it covers the front of the i... | 11/29/1988 |
| 4773589 | Heat control systems Improvements in fireplace systems include several features some of which are separably usable in other heating apparatus. The features include a barometric damper adaptor, a grate structure, a manner of mounting hollow grate tubes in a fireplace assembly,... | 09/27/1988 |
| 4621610 | Solid fuel heating apparatus A solid fuel heating apparatus has combustion air supplied in a controlled manner by a manifold. The manifold has a first branch that directs combustion air to the interior of the fuel ignited within the firebox and a second branch that extends along the ... | 11/11/1986 |
| 4583516 | Fireplace insert The invention relates to a fireplace insert having unique characteristics of a fiberglass insulated twin wall construction engineered to work on the principle of air convection. Cold air is drawn into a bottom inlet, circulated through channels between th... | 04/22/1986 |
| 4542736 | Fireplace cap with preheated secondary air supply A fireplace cap is positioned outside the firebox of the fireplace. The cap has a framework comprised of first and second side members, an upper cross member and a lower damper section. A pair of hinged doors are mounted to this framework. Dampers selecti... | 09/24/1985 |
| 4515146 | Fireplace door A fireplace door assembly having doors pivotally mounted on a frame to be mounted on the opening of a fireplace. The doors are mounted on hinges that provide adjustment along a vertical axis of rotation and the front of the frame. An adjustable fire resis... | 05/07/1985 |
| 4508098 | Fireplace cap A fireplace cap includes a pair of hinged doors supported by a rectangular framework of first and second side rails, a header section, and a damper section. The components forming the framework are formed with flanges positioned at the rear of the cap for... | 04/02/1985 |
| 4436080 | Fireplace and stove apparatus A fireplace or stove apparatus for efficiently providing heat to a structure without loss of interior air to the flue draft. A blower forces outside air through a conduit located in the exhaust flue into a grate located in a fireplace or stove. The fuel l... | 03/13/1984 |
| 4391266 | Stove apparatus Stove apparatus comprising in combination with a firebox a surrounding heat-exchange housing spaced therefrom to provide for air circulating passages. Both the firebox and the housing have top, lateral sides and rear ends spaced apart in substantial paral... | 07/05/1983 |
| 4384566 | Prefabricated fireplace A prefabricated fireplace comprises a firebox and flue enclosed by concrete cast as a unit. The firebox has inner walls defining a fuel box in which combustion occurs and outer walls which define a circulation space around the fuel box for room air to be ... | 05/24/1983 |
| 4377153 | Heating device A heating device for consuming a combustionable fuel, having an internal combustion chamber with top, sides, ends, and a grate forming the bottom; an outer shell, having a top, sides, ends, and a bottom in spaced relation below the grate; a primary air su... | 03/22/1983 |
| 4329975 | Solid fuel stove utilizable as a fireplace A so-called stack stove, especially for the burning of solid fuels and particularly wood has a hood or apron extending downwardly and outwardly along the upper portion of at least its front above the opening into the combustion chamber. A window door is m... | 05/18/1982 |
| 4319558 | Fireplace heater A metal front plate with a heat resistant seal around its edge forms an airtight cover over an existing fireplace face. Metal or glass doors in the plate allow logs to be placed in the fireplace. Primary air is regulated by dampers in the front plate on t... | 03/16/1982 |
| 4305373 | Fireplace furnace A fireplace furnace is insertable as a unit into the front opening of an existing fireplace. It has a firebox portion and can also have a cookstove extension of the firebox which protrudes into the room when the firebox is positioned in a fireplace. A she... | 12/15/1981 |
| 4303056 | Fireplace closures A fireplace closure containing means for supplying an additional amount of air to assist combustion of the logs, coal and the like in the fireplace grate at the time a fire is first started. The invention includes means for cutting off the additional amou... | 12/01/1981 |
| 4300528 | Fireplace door seal An improvement to the enclosure of fireplace apertures is provided by a sealing strip which engages pivotable glass doors having metallic frames and the frame of the fireplace enclosure. This sealing strip may be a lightweight gauge of brass, bronze, alum... | 11/17/1981 |
| 4290409 | Fireplace glass door with heat circulator There is disclosed a fireplace screen comprising a frame which fits against the fireplace opening and a pair of doors hinged at the side which substantially close the fireplace opening and are fitted with glass panes so that the interior of the fireplace ... | 09/22/1981 |
| 4279239 | Wood-fired fireplace A wood-fired fireplace comprises a fire basket with log-retaining dogs, a back plate, a glass door, an upper part connected to a flue and provided with an anti-downdraft device, and a sweeping flap. A damper is operable by a lever, and an ashpan is raised... | 07/21/1981 |
| 4270514 | Fireplace with sliding doors The wall extending laterally away from the side of a fireplace opening is provided with a vertical recess that receives one end of a track extending across the front of the fireplace below the upper surface of its hearth and supporting a glass door normal... | 06/02/1981 |
| 4256083 | Firebox The device of this invention is an enclosed firebox constructed to fit in a wall fireplace cavity such that the front piece of the enclosed firebox faces the room interior while the back piece faces the outdoors. The front piece contains duct openings to ... | 03/17/1981 |
| 4254756 | Fireplace apparatus Fireplace apparatus insertable into an existing fireplace, and compatible with an existing chimney structure includes a double wall on the sides and at the back of a firebox and two separate air systems are provided, one system for combustion air and a se... | 03/10/1981 |
| 4245614 | Fireplace screen An improved glass panelled fireplace screen has sliding doors within a frame. The joints between the doors and the frame and between adjacent doors provide novel seals for effectively impeding the passage of air when the doors are in closed position. The ... | 01/20/1981 |
| 4219005 | Fireplace heating unit In abstract a preferred embodiment of this invention is an improved fireplace heat exchanger in the form of an integral heat exchange system, fireplace closure, air tight glass doors and an outside air introduction system. The unit is built as a single un... | 08/26/1980 |
| 4183348 | Fireplace front A fireplace front and method of making a fireplace front for closing a forward opening in a fire chamber, including: upper and lower sets of front and rear tracks, a pair of transparent, imperforate doors and a pair of perforate screen doors mounted on th... | 01/15/1980 |
| 4129113 | Combination glass door and heat-exchanging grate for fireplaces An improved combination glass door closure and ducted (e.g., tubular) heat exchanging grate for fireplaces. The combination grate includes a ducted heat exchanger suitable for positioning within a fireplace cavity. The heat exchanger comprises a plurality... | 12/12/1978 |
| 4117824 | Automatic wood burning heating stove An automatic wood burning heating stove has a fire chamber, a fuel feeding opening, closeable by an airtight door which is removable to convert the heater to an open fireplace. The door has a reflective ceramic surface on its inner face to direct heat tow... | 10/03/1978 |
| 4108145 | Fireplace closure In abstract a preferred embodiment of the present invention is an adjustable fireplace closure which when properly installed closes the front opening about a fireplace and virtually eliminates the drafting action of the fireplace.... | 08/22/1978 |
| 4102321 | Fireplace screen A fireplace screen for substantially entirely covering a fireplace fuel burning chamber so as to preclude the continuous flow of air therein utilizes a rigid frame to which a first air impervious rigid sheet is fixedly secured and to which a second air im... | 07/25/1978 |
| 4088113 | Wood burning automatic swimming pool heater A swimming pool heater has a fire chamber with a fuel feeding opening closable by a door which is removable to use the heater as a fireplace. A heat exchanger comprises a continuous length of copper tubing paralleled by an adjustable bypass. Air is suppli... | 05/09/1978 |
| 4059091 | Heat saving concealed fireplace front A front for a fireplace comprises a concealed fireplace door that slides into and out of a concealed door pocket formed at the side of the fireplace. The door completely seals the fireplace front when in its closed position and a fire is burning in the fi... | 11/22/1977 |
