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| Number | Title | Issue Date |
| 5149221 | Angled connection of suspended ceiling tees A clip provides a method for securing suspended ceiling tees to each other at an angle, especially but not necessarily at an angle other than a right angle. The clip has a body portion, an integral first tab portion projecting from one end of the body por... | 09/22/1992 |
| 5084097 | Aerosol spray for self protection and identification of assailants A non-toxic dye in an aerosol container to be used for protection against an assailant is disclosed. The dye is an irritant to skin and eyes and is also a semi-permanent marking dye which is intended to aid in the identification of the assailant by police... | 01/28/1992 |
| 5069885 | Photocatalytic fluid purification apparatus having helical nontransparent substrate Apparatus for the purification of a fluid, such as water, which in the presence of light of an activating wavelength brings the fluid into contact with surfaces with fixed photoreactive coatings of anatase (TiO2) or other photoreactive semicond... | 12/03/1991 |
| 5064454 | Filtration removal of matter from gas streams, with off-line cleaning of filters Apparatus for the removal of asbestos or other matter from a gas stream in a conduit is disclosed. The apparatus includes at least two filter units installed in parallel to receive and filter the gas stream from the conduit, outlets for solid matter at th... | 11/12/1991 |
| 5056777 | Force transmission mechanism for exercise machines An exercise machine is disclosed, in which there is a frame, an exercise portion moveable with respect to the frame, weights raisable with respect to the frame, and a cable connecting the weights to the exercise portion. The force transmission mechanism b... | 10/15/1991 |
| 4986076 | Isothermal cooling method and device One version of the invention provides a method for cooling and maintaining an object at a substantially constant temperature. The method includes adding a salt that dissolves endothermically in water to a mixture containing at least water, a surfactant an... | 01/22/1991 |
| 4966020 | Locking mechanism A novel locking mechanism and specific applications for same are disclosed. One aspect of the invention provides a product security system having a locking mechanism for preventing sliding movement between a slidably juxtaposed product container and produ... | 10/30/1990 |
| 4959978 | Programmable pushbutton combination lock A combination lock or padlock having pushbuttons where the combination of buttons to be pushed to open the lock is mechanically programmable by the user is disclosed. The lock has a case and a locking arm and associated slider, moveable between a locked a... | 10/02/1990 |
| 4957246 | Toilet roll cover A toilet roll cover suitable for covering both wall mounted and free standing toilet rolls is disclosed. The invention provides embellishment of the interior design of a bathroom and may enhance hygiene and air quality. The invention comprises a piece of ... | 09/18/1990 |
| 4953507 | Livestock watering apparatus A livestock watering device is disclosed, including an insulated tank, at least one opening through the top for an animal to gain access, and at each opening, at least one horizontally arranged buoyant door pivotally connected at one side thereof on the u... | 09/04/1990 |
| 4944977 | Friction welding flash trap seal A friction welded part having a sealed flash trap is disclosed, along with a method for producing such parts. The friction welded parts have a hollow cylindrical part and a second part to which the hollow cylindrical part is friction welded. There is an i... | 07/31/1990 |
