Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7731574 | Mechanism for opening a vent cover A vent assembly has a base and a cover connected to the base. The cover moves between a closed and open position. A fan is optionally mounted for rotation in the base. A mechanism, including a strut system, raises and lowers the cover. The strut system is connected ... | 06/08/2010 |
| 7008230 | Firefighter's training simulator A mobile simulator for use in firefighting training exercises. The mobile simulator includes a plurality of rooms, including a room for simulating a kitchen fire, and a room for simulating a wall fire condition. The mobile simulator also includes a confined space un... | 03/07/2006 |
| 7004832 | Collapsible air vent closure A collapsible air vent closure is disclosed comprising a frame having a frame aperture. A closure is mounted to the frame for pivoting between a closed position and an open position. A movable vent wall having a vent orifice is interposed between the frame and the c... | 02/28/2006 |
| 6932694 | Vent A ventilation apparatus or vent includes a handle, that is balanced for receiving forces, such that when force is applied anywhere on the handle, it is distributed such that a locking engagement will be broken. The handle can be moved easily, so as to open or close ... | 08/23/2005 |
| 6923498 | Recreational vehicle cover A recreational vehicle cover rests on the roof of a recreational vehicle. The cover is lightweight, portable and is easily installed or removed by two people. The cover requires no modification to the recreational vehicle. The recreational vehicle cover is capable o... | 08/02/2005 |
| 6106385 | Vent assembly A vent assembly is provided for any manner of vehicle or vessel. The vent assembly includes a vent which is operable between selective open positions and a closed position. The vent is rotatable relative to a panel through which the vent is disposed so th... | 08/22/2000 |
| 6009929 | Exterior skylight solar screen cover A new exterior skylight solar screen cover for engaging a skylight to prevent excessive heat build-up in a space below a skylight which has a frame, the solar screen comprising a frame member dimensioned for coupling with the exterior of the skylight. A p... | 01/04/2000 |
| 5797791 | Vented window assembly A vented window assembly is provided for any manner of vehicle or vessel. The window assembly has a unitary piece of glass with an opening defined therein. A vent assembly is mounted in the opening and is sealingly engaged with the glass. The vent assembl... | 08/25/1998 |
| 5672101 | Solar operated vent cover An improved solar operated ventilator cover is disclosed for covering an aperture disposed in a horizontal surface. The cover has sidewalls with a cover opening and a top surface with an internal wall extending between the sidewalls and the top wall. An o... | 09/30/1997 |
| 5428957 | Exhaust stack stopper A device is disclosed for shutting off the flow of exhaust gases from the exhaust outlet of a diesel engine having a substantially vertical exhaust stack. The device is especially useful for stopping the flow from one of twin diesel stacks when a tractor ... | 07/04/1995 |
| 5309972 | Air vent cover An apparatus is disclosed for an improved device for covering an aperture disposed on a horizontal surface. The cover has sidewalls, a top surface, and a lip which defines a cover opening within a sidewall. The improvement comprises a first and a second g... | 05/10/1994 |
| 4759270 | Vent cap cover A vent cap cover for use with the ventilation assembly of a motor home, travel trailer or the like comprising a hollow enclosure including a plurality of vent louvers formed therein affixed to the motor home, travel trailer or the like by a plurality of v... | 07/26/1988 |
| 4633769 | Roof vent fan assembly A power roof vent fan assembly having a motor and fan mounted in a body spanning an opening in the roof of an enclosure. The motor is mounted in H-shaped cross brace assembly having reinforcing ribs for vibration dampening. A shroud is secured to the body... | 01/06/1987 |
| 4615263 | Dry vent for motor homes A dry vent is provided that permits ventilation of motor homes, travel trailers, or the like, while blocking entrance of rain and small animals through the ventilation duct. The dry vent hereof is especially designed for installation on existing ceiling p... | 10/07/1986 |
| 4522115 | Ventilator for vehicle Ventilator for roof or other wall of a vehicle in which an opening in the wall is normally closed by a closure member and the closure member is connected to the wall at each of a pair of opposite sides by a pair of spring-and-link assemblies enabling the ... | 06/11/1985 |
| 4329917 | Ventilators and/or windows for vehicles In a combined ventilator and window for installation in the roof of a motor coach, a panel 18 is mounted on angularly movable arms 28 so that the panel 18 can be moved between a closed position, opened positions in which either side of the panel 18 or eit... | 05/18/1982 |
| 4300440 | Ventilating hatch assembly A ventilating hatch assembly for a boat deck or the like includes a square opening in the deck having a coaming extending therearound. A square frame having a hatch cover pivotally attached along one edge thereof is disposed over the opening and is demoun... | 11/17/1981 |
| 4201123 | Snap door vent with spring A vehicle ventilation opening is covered by a dome-shaped cover that has a pair of generally triangular oppositely disposed lateral cover openings extending from an uppermost portion of the cover. A pair of generally triangular shaped and outwardly bowed ... | 05/06/1980 |
| 4201122 | Snap door vent A vehicle ventilation opening is covered by a dome-shaped cover that has a pair of generally triangular oppositely disposed lateral cover openings extending from an uppermost portion of the cover. A pair of generally triangular shaped and outwardly bowed ... | 05/06/1980 |
| 4106399 | Vehicle roof ventilator insulation covering Insulation apparatus for attachment to exterior surfaces of a roof ventilator, particularly an operating roof ventilator wherein an upper portion thereof is hingeably mounted to a fixed lower portion thereof, the invention comprises a cover formed of insu... | 08/15/1978 |
| 4038911 | Multi-directional vent A multi-directional vent for the ventilation opening of a vehicle includes a vent frame having a vent cover pivoted at its front side to the frame and having an air intake opening in the front of the vent cover. A door is pivoted to the vent cover to sele... | 08/02/1977 |
