Abstract: An extraction system and method. The system has a hoist assembly and a sled. The hoist assembly has two spaced apart rail connecting members configured to connect with rails of an end of a ladder. The hoist assembly also has a winch. The winch has a cable. The sled has frame, a platform connected to the frame, and a harness connecting a rider to the platform. The cable is releasably connected to the sled. The winch is operable to move the sled via the cable along the ladder from a lowered position to a raised position.

Abstract: An extraction system and method. The system has a hoist assembly and a sled. The hoist assembly has two spaced apart rail connecting members configured to connect with rails of an end of a ladder. The hoist assembly also has a winch. The winch has a cable. The sled has frame, a platform connected to the frame, and a harness connecting a rider to the platform. The cable is releasably connected to the sled. The winch is operable to move the sled via the cable along the ladder from a lowered position to a raised position.

Abstract: A method of testing a circuit assembly that includes a piezoelectric switch may include driving a DC current into the piezoelectric switch. The method may further include measuring the time interval it takes to develop a predetermined voltage across the piezoelectric switch and comparing the measured time interval with a first predetermined time interval and a second predetermined time interval. The method may include identifying the circuit assembly as defective when the measured time interval is either less than the first predetermined time interval or more than the second predetermined time interval, and otherwise identifying the circuit assembly is operational.

Abstract: A method of testing a circuit assembly that includes a piezoelectric switch may include driving a DC current into the piezoelectric switch. The method may further include measuring the time interval it takes to develop a predetermined voltage across the piezoelectric switch and comparing the measured time interval with a first predetermined time interval and a second predetermined time interval. The method may include identifying the circuit assembly as defective when the measured time interval is either less than the first predetermined time interval or more than the second predetermined time interval, and otherwise identifying the circuit assembly is operational.

Abstract: The HUMPHREYS FIRE-RESCUE TOOL is a multi-purpose, adjustable length combination tool which provides the fire-rescue worker the ability to perform a wide variety of tasks. The tool may be separated into two tools by removing the pry bar from the handle of the maul. This permits the user to drive the pry bar with the hammer into the material to be pried. The hammer can then be replaced on the pry bar to increase leverage for prying. This tool will supplement and often eliminate the need to carry bulky tools such as the axe, hammer, pry tools, short pike pole, gas wrench, chisel, and Glass Master. The firefighter can carry this 6.5-pound tool on his belt by means of an integral belt clip. This leaves both hands free to perform other tasks such as pulling a hoseline, yet the tool is available when it is needed. No other fire tool is as versatile or convenient to use.

Abstract: A device is disclosed which is useful to generate electric signals particularly in close quarters. The preferred embodiment is described in terms of a piezoelectric signal generator incorporated into the beltline trim of an automobile and an alternate configuration in a flat sheet metal application. The invention is discussed in terms of its ability to take advantage of already existing structural elements of its host body and its ability to be attached without putting holes in such structure.