Class 73/35.17 - Safety feature or containment structure

Subclass of Class 73 - Measuring and testing
Definition: Subject matter including means for either (a) protecting
No. of patents: 24
Last issue date: 02/28/2012

Number	Title	Issue Date
8122757	Propellant ignition testing apparatus having a compressively sealable chamber A propellant ignition testing apparatus having a compressively sealable chamber. A fixed end plate assembly is fixedly mounted on a support structure. A test chamber assembly having a combustion chamber for accommodating propellant is provided, and an initiator igni...	02/28/2012
7337686	Multi-threat detection system A method and system for efficiently screening for dangerous threatening items are presented. The system includes an object unit designed to hold the object and a test unit including equipment for subjecting the object to a combination of two or more tests. There are...	03/04/2008
7308847	Perforating gun loading bay and method A perforating gun loading bay is described for protecting adjacent areas from an accidental explosion during gun loading. The bay can be an insert-type arrangement or a stand-alone structure. The bay includes metal plate walls, a floor and a roof. ...	12/18/2007
7225691	Airbag inflator performance test system An airbag inflator performance test system includes: a cylindrical tank; a disk-shaped piston vertically movably disposed with a gap between the piston and an inner peripheral face of the tank, the gap allowing gas to flow; a piston rod that projects upward from the...	06/05/2007
7162919	Blast pressure gauge Blast pressure gauges and methods for detecting blast pressure during a blast test. The gauges operate independently of power sources, are portable, and are used in harsh environments including test ranges. Each embodiment is constructed to detect blast pressures as...	01/16/2007
7119597	Methods and apparatus to produce a voltage pulse A test circuit employs use of first and second switches to operably charge a capacitor to over 500 volts and, thereafter, discharge energy stored in the capacitor to test an over-voltage protection circuit associated with a pin of a semiconductor device. When switch...	10/10/2006
6773674	Thermal analysis for detection and identification of explosives and other controlled substances The invention features methods and systems for detecting the presence of an energetic material in a sample in which the presence of the energetic material is unknown. The method includes the steps of: heating the sample; measuring heat flow between the sample and it...	08/10/2004
6662629	Propellant test apparatus and method A test apparatus and method for a solid propellant, comprising a combustion chamber for the solid propellant, an igniter for igniting propellant in the combustion chamber, and an exhaust housing having a primary exhaust channel extending from the combusti...	12/16/2003
6644099	Shaped charge tubing cutter performance test apparatus and method A shaped charge tubing cutter performance test apparatus and procedure comprises a plurality of test coupons, preferably fabricated from a pipe wall section of the test subject. The coupons are configured with a height greater than the axial length of the...	11/11/2003
6366436	Electronic device for use in regions subject to explosion hazards A description is given of an electronic device for use in regions subject to explosion hazards, which is small and light, can be produced cost-effectively and offers a high degree of flexibility, having a housing (1) with a connecting chamber (3), which i...	04/02/2002
6354137	Inertial confinement cylinder for explosive characterization A reusable small-scale explosive testing apparatus has a structural member with a curved internal chamber, a head piece that inserts into the chamber, a cap to hold the head piece, a pressure-time gage, water to fill the chamber and a pressure release mec...	03/12/2002
5959193	Explosion protection apparatus with electrical initiation An explosion protection apparatus for installation in potentially explosive industrial installations for the purpose of automatically preventing a pressure wave and/or flame breaking through from a potentially explosive installation part to adjacent insta...	09/28/1999
5929323	Barometric and altimeter bomb detection and midair explosion avoidance system for airplanes A barometric and altitude bomb detector and midair explosion avoidance system has reinforced armored chamber for containing air travel passenger luggage which is capable of regulating the atmospheric pressure within the chamber. The present invention is d...	07/27/1999
5922940	Barometric and altimeter bomb detection and midair explosion avoidance system for airplanes A barometric and altitude bomb detector and midair explosion avoidance system has reinforced armored chamber for containing air travel passenger luggage which is capable of regulating the atmospheric pressure within the chamber. The present invention is d...	07/13/1999
5531098	Hybrid inflator testing tank A testing tank for securing and enclosing a plurality of gas discharge ports of a hybrid inflator during test firing of the inflator, the testing tank having a tank container, a lid and an adaptor system. The tank container has an open top communicating w...	07/02/1996
5100625	Apparatus for testing candidate rocket nozzle materials An apparatus for testing candidate rocket nozzle materials includes an elated member having a combustion chamber extending therethrough, with an inlet at the forward end of the combustion chamber for admitting and igniting a gaseous mixture of hydrogen a...	03/31/1992
4730502	Apparatus for transferring mechanical motions representing measured quantities There is disclosed herein an apparatus for converting mechanical quantities, such as mechanical force, into an electrical signal by a mechanism which minimizes explosion possibilities. The mechanism includes a transmission rod which passes through a circu...	03/15/1988
4474052	Laboratory barricade An improved laboratory barricade for containment of potentially explosive materials and processes, having a containment chamber provided with a pressure venting port or ports, wherein the improvement comprises said barricade having dimensions such that ra...	10/02/1984
4434655	Black powder flamespread tester A black powder flamespread tester is disclosed in which powder to be qualed is packed in a sample tube provided with a plurality of sight holes. Light sensors are disposed adjacent each sight hole and emit signals upon flame front passage of the sight ho...	03/06/1984
4381218	Apparatus for testing combustibility of wood pulp blow gases The flammability of non-condensible blow gases from a wood pulping digester is continuously monitored by venting a low volume sample flow stream of such gases through a small combustion chamber where the stream is subjected to an intermittent ignition sou...	04/26/1983
4233835	Electrostatic discharge tester A testing apparatus for determining and evaluating the sensitivity of propellants and other hazardous materials to electrostatic discharges carried and stored on apparatus or individuals by simulating and controlling their normal force by being exposed to...	11/18/1980
4173140	Trigger device for explosion barrier A trigger device for an explosion barrier includes a pressure sensor and at least two flame sensors. The pressure sensor energizes the flame sensors in response to a predetermined pressure rise, and the explosion barrier is triggered when a flame is detec...	11/06/1979
4140004	Apparatus for determining the explosion limits of a flammable gas An apparatus for determining the explosion limits of flammable gases having a combustion chamber, a conduit leading to the combustion chamber for conveying the sample stream of gas, a temperature control for maintaining the gas in the combustion chamber a...	02/20/1979
3978877	Method and apparatus for monitoring and controlling the composition of flammable gas mixtures An improved apparatus for monitoring and controlling the composition of a flammable gas mixture to prevent accumulation of explosive gas mixtures in a substantially closed container. The apparatus includes a combustion chamber through which a sample strea...	09/07/1976

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Class 73/35.17 - Safety feature or containment structure