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| Number | Title | Issue Date |
| 7156257 | Compressed gas cylinder The present invention provides a compressed gas cylinder that is capable of storing a compressed fluid at high pressures. The cylinder of the present invention includes a body terminating in an inwardly domed cap. The dome included in the cap of the compressed gas c... | 01/02/2007 |
| 7097531 | Self powered fire alarm An improvement to a self powered fire alarm consisting of an improved housing sealing method that improves the reliability of the alarm by preventing insect infiltration. Additional improvements consist of an improved alarm activated notification, along with the inc... | 08/29/2006 |
| 7097353 | Method and device for indicating temperature Disclosed is a temperature indicating method and device. The device embodies a sealed tube containing a liquid and a float. The tube has markings on the exterior indicating temperature zones or, in the alternative, temperature gradients. The method disclosed include... | 08/29/2006 |
| 6908271 | Split lock screw fastener assembly and method A self-locking bolt assembly (1) includes a split bolt (2) and a screw set pin (3). The bolt includes a threaded shank (4), an axial bore (6) extending through the shank, the bore (6) including a threaded bore section (6 | 06/21/2005 |
| 6843199 | Heat-sensitive odor-emitting component An odor-emitting port is provided in a housing member composed mainly of an inorganic material. An odorous material is contained in the housing member, and the odor-emitting port is sealed with a low-melting metal to constitute a heat-sensitive odor-emitting compone... | 01/18/2005 |
| 6270724 | Detection of contaminants in food The present invention relates to a food contamination detector associated with a double bar code, given the trademark GILBAR™ by the owner of the present invention, that includes coded indicia used to identify the presence of conditions indicative of mi... | 08/07/2001 |
| 5276433 | Methods and apparatus for temperature sensing A temperature sensor has a flexible nylon tube connected by a fluid-tight coupling to a metal bellows within a metal housing. The interior of the tube and bellows is filled with a pressurized liquid whose critical temperature corresponds to a threshold te... | 01/04/1994 |
| 5235323 | Fire alarm with electric and non-electric annunciators A fire alarm which consists of a housing, an alarm assembly and a switch assembly. A driving spring in the alarm assembly is used for storing driving energy. As soon as a nylon string in the alarm is burnt and broken, the driving spring will drive small h... | 08/10/1993 |
| 4771270 | Temperature sensitive fire alarm unit A simple, compact and inexpensive battery powered fire alarm unit has a normally closed spring-loaded electrical contact which is held open by a cermet metal strip, or the like, which is constructed to melt and fail at a predetermined high temperature lev... | 09/13/1988 |
| 4720994 | Method and apparatus for the detectable release of gases A method and apparatus with which a sealed gas containing first container, which is disposed in a sealed inaccessible and not visually observable further container, can be detectably opened. A thermally inducible opening mechanism disposed in a gas flow o... | 01/26/1988 |
| 4608556 | Smoke detection apparatus A heat sensitive air/gas sampling device including an apertured housing for connection to a pipe leading to a smoke detector device the housing including a blocking device for preventing air/gas to enter the housing, the blocking device being ineffective ... | 08/26/1986 |
| 4445454 | Temperature sensor A fusible solder temperature sensor adapted for use with a trapped fluid pressure header alarm system. The sensor includes an insulating plastic fitting having threads at one end and a bore therethrough for connection to and fluid communication with the h... | 05/01/1984 |
| 4379561 | Well packer A well packer, in particular for a bore hole pump, comprises a packer sleeve having a tapered external surface surrounded by a collet ring which has a tapered internal surface. The collet ring is of resilient material and can be stressed to a smaller diam... | 04/12/1983 |
| 4265194 | Fire alarm heat sensor A heat sensor is provided having a support member, an actuating member mounted pivotally therewith by a spring operatively engaging, in tensioned condition, a portion of the support member and the actuating member, and a member fabricated of two separable... | 05/05/1981 |
| 4170189 | Sensor element and assembly for thermally responsive apparatus A heat-sensitive assembly mountable as unit and responsive to predetermined ambient temperature conditions above normal room temperature for activating a device for protection against heat or fire, comprising thin metal plates soldered face to face with e... | 10/09/1979 |
| 4154189 | Manual release and test apparatus for alarm system A manually operated release and test apparatus is disclosed for use with mechanically powered protection devices. A spring powered fire alarm, for example, is triggered either by exposure of its sensitive fusing element to a predetermined temperature, or ... | 05/15/1979 |
| 4130083 | Activating mechanism for flashlamp article Activation means for activating at least one percussive flashlamp unit located within a flashlamp article. An activator moves within a casing when released by a pivotal retaining arm to engage and effect release of the flashlamp unit's striker spring. The... | 12/19/1978 |
| 4121533 | Thermally responsive acoustic fire alarm assembly A heat-sensitive assembly mountable as unit and responsive to predetermined ambient terperature conditions above normal room temperature for activating a device for protection against heat or fire, comprising thin metal plates soldered face to face with e... | 10/24/1978 |
| 4098220 | Alarm A pressurized container fitted with a fusible plug and containing a suitable propellent with a vapor operated sounding alarm attached is constructed as a selfcontained sounding device that produces its sound when subjected to heat sufficient to cause the ... | 07/04/1978 |
| 4084157 | Smoke and heat detector alarm A smoke and heat detector alarm including a compressed gas, self contained, stored energy source. A T-fitting connects to the compressed gas tank through a fusible element activated valve and feeds separate conduit systems leading to individual sounding d... | 04/11/1978 |
| 4052690 | Sensitive fuse for fire alarm A sensitive fuse for fire alarms comprising an extremely thin heat collector disk of nickel or brass nickel plated material. A pair of phenolic resin copper laminated attachment strips are soldered to the disk to form a unitary fuse. One attachment strip ... | 10/04/1977 |
| 4022148 | Portable fire alarm A self-contained fire alarm is described that is activated by a temperature-sensitive release mechanism. The alarm is a simple inexpensive device that requires minimal maintenance and is independent of any electrical power source.... | 05/10/1977 |
| 3961597 | Liquefied gas alarm device In a temperature-sensitive alarm device incorporating a horn driven by a propellant which is stored in the liquid state in a pressure vessel, full utilization of the propellant for sounding the horn is obtained by incorporating into the pressure vessel a ... | 06/08/1976 |
| 3938115 | Combination smoke and heat detector alarm A combination smoke and heat detector alarm including a self contained stored energy source in the form of a cylinder of compressed gas. A T-fitting connects to the cylinder and feeds separate conduit systems leading to individual sounding devices. A fusi... | 02/10/1976 |
| 3938114 | Gas-powered alarm with pressure responsive remote indicator circuit The passage-way between a freon cylinder and a freon-powered horn is plugged by a eutectic metal plug. When sufficient heat loosens the plug, the horn is activated. A switch in the passageway senses the back pressure from the freon gas flow and activates ... | 02/10/1976 |
| 3931785 | Automatic fire alarm This device comprises an audible alarm member arranged to be sounded by spring operated clapper means which is normally held inoperative by temperature responsive devices all in a perforated housing suitable for installation in a room. The temperature res... | 01/13/1976 |
