Abstract: A fall arrest device (10) includes a drum (1) configured to have a safety line (2) wound thereon, a speed responsive engagement assembly (3, 4, 6) arranged to inhibit rotation of the drum (1) above a predetermined rotational speed, and a traveller (30) configured to move in response to rotation of the drum (1). The traveller (30) is configured to activate the speed responsive engagement assembly (3, 4, 6) when a predetermined length of safety line has been paid out. This allows a user to be restrained from the edge of a worksite or other location where a fall may occur.

Abstract: Systems and methods are provided for a tensioning device configured for increasing tension in a line. A system may include a rotating member configured to support a line, the rotating member being configured to rotate around a shaft. A locking member is configured to limit movement of the line when the line is supported by the rotating member. A tensioning handle is configured to have a closed position and an open position, where the tensioning handle is disengaged from the shaft when in a closed position, and where the tensioning handle is configured to be engaged with the shaft when the tensioning handle is in an open position.

Abstract: Systems and methods are provided for a fall limiting device. An embodiment includes a housing and a rotatable drum comprising an axle and two side portions, said rotatable drum comprising a single contiguous material piece. A retractable member is held, at least in part, within the housing via winding around the rotatable drum within the two side portions.

Abstract: A turnbuckle device for tensioning a safety line includes a body having a pair of opposing ends, with each end having a threaded bore. The turnbuckle device further includes a pair of connectors, with each connector having a threaded shaft configured for being received in the threaded bore of one of the pair of opposing ends of the body. The turnbuckle device further includes a handle connected to the body. The handle is movable between a stowed position and an operational position. In the operational position, the handle is configured for facilitating rotation of the body about a longitudinal axis of the body.

Abstract: A breathing apparatus includes a tank containing pressurized breathing gas, a regulator having an inlet connected to the tank, an outlet for providing breathing gas to a user, and a valve configured for controlling a flow of breathing gas between the inlet and the outlet. A facepiece includes a first port for connecting with the outlet of the regulator, a second port adapted to be connected to an air purifying system, and an exhalation valve. A pneumatic pressure adjustment assembly is in operative connection with the exhalation valve, and has a first pneumatic connection in operative connection with a second pneumatic connection in the regulator. The pneumatic pressure adjustment assembly is operable to adjust the internal facepiece pressure for opening the exhalation valve based on whether breathing gas is delivered to the pneumatic pressure adjustment assembly. An alignment mechanism is provided for aligning the regulator with the facepiece.

Abstract: A fall protection compliance system includes a fall limiting device connected to an anchor. The fall limiting device comprises a connection device and a sensor system associated with the connection device. The sensor system is configured to determine whether a connector is connected to the connection device and to transmit a signal based on detecting that the connector is connected to the connection device, where operation of a machine associated with the anchor is controlled based on the signal.

Abstract: A divider for a carabiner in a fall arrest system, the carabiner having a frame; and an openable gate and configured to be moved between an open position and a closed position, the divider comprising a body having: (i) a central body portion; and (ii) a plurality of connection portions extending from the central body portion and configured to attach the divider to at least a portion of the frame, wherein the plurality of connection portions are spaced and divide the carabiner into a plurality of areas for connection of the at least one component of the harness arrangement and the at least one fall arrest device.

Abstract: A system includes a primary combustible gas sensor and a trigger combustible gas sensor including a first trigger element of low-thermal-mass which includes a first trigger heating element in operative connection with electronic circuitry. The trigger combustible gas sensor also includes a second trigger element of low thermal mass including a second trigger heating element. The second trigger element is also in operative connection with the electronic circuitry. The electronic circuitry further has a first trigger mode of operating in which the first trigger element is heated to a temperature at or above a temperature at which the first trigger element causes combustion of the at least one combustible gas analyte and wherein the second trigger element is operated as a trigger compensating element. The electronic circuitry is configured to operate the trigger combustible gas sensor to detect a value of a response at or above a threshold value.

Abstract: An energy absorber device for use in a fall protection system has an energy absorber in the form of an elongate flexible element having first end spaced apart from and a second end. A containment structure (such as a housing or jacket) contains the energy absorber in an un-deployed state and has a first end secured with respect to the elongate flexible element near the first end of the elongate flexible element. The second end of the containment structure has a deployment exit such that in the event of deployment of the energy absorber arrangement, the elongate flexible element is pulled through the deployment exit. The device provides for easier deployment of the elongate flexible element than other designs employing hard shell casings or housings. Movement on the elongate flexible element is also highly resisted.

Abstract: A safety helmet includes an outer shell configured for surrounding a head of a user, and an infrared reflective layer disposed in an interior of the outer shell. The infrared reflective layer is configured for reflecting at a least a portion of incident infrared radiation transmitted through the outer shell. The infrared reflective layer has infrared reflectivity of at least 40%. The safety helmet further may have an evaporative cooling pad positioned within a cavity defined by the inner surface of the outer shell. A method of manufacturing a safety helmet is also disclosed.

Abstract: A connection arrangement for use with a wearable body harness includes a first connector having a first body component, a second body component, and an attachment element connected to each other by a rod having a longitudinal axis. The connection arrangement further includes a second connector removably connectable to the first connector. Each of the first body component, the second body component, and the attachment element are independently movable relative to each other about the longitudinal axis of the rod. The first connector and the second connector are removably connectable to each other via a locking and release mechanism between a first, locked configuration, where the first connector and the second connector are connected to each other, and a second, unlocked configuration, where the first connector and the second connector are disconnected from each other.

Abstract: Systems and methods are provided for a helmet having a configurable headband assembly. A helmet includes a helmet liner having a plurality of headband attachment points, each headband attachment point including a first opening for receiving and holding a primary attachment structure; and a second opening for receiving a locking pin. A headband assembly is configured to assist in fitting the helmet to a wearer's head. The headband assembly includes a fit adjustment mechanism configured to adjust an internal shape of the headband assembly; and a plurality of attachment structure sets, an attachment structure set including a primary attachment structure; and a locking pin.

Abstract: A fall protection compliance system includes a connection structure configured for interfacing an anchor structure and a connection sensor associated with the connection structure. The connection sensor includes an accelerometer or a pressure switch, where the connection sensor is configured to monitor continued connection of the connection structure to the anchor structure over a period of time and to output a signal indicating said continued connection.

Abstract: A fall protection compliance system includes a connection structure configured for interfacing a connector comprising a frame and a connection sensor assembly. The connection structure includes a connection loop, a connection anchor, and a housing. The housing includes an identification element. The connection sensor assembly includes at least one short-range wireless communication antenna and a control device. The control device includes at least one processor which is configured to receive connection data from the short-range wireless communication antenna, determine a connection status of the connector based on the connection data and perform at least one action based on the connection status.

Abstract: An alignment tool for use in connection with an open path gas detection system, which includes an interface including one or more connectors, includes an optical system having a scope and an attachment system operatively connected to the optical system. The attachment system includes a body including one or more cooperating connectors. The body is rotatable about an axis thereof in a first direction to bring the one or more cooperating connectors into connection with the one or more connectors. The attachment system further includes one or more locking elements which engage the one or more connectors after a predetermined amount of rotation of the body in the first direction to form a state of locked engagement.

Abstract: Systems and methods are provided a helmet that includes shell comprising a plurality of connection receptacles, a first connection receptacle having a shape that is different from a shape of a second connection receptacle. A flexible suspension web includes a plurality of straps for supporting the shell on a head of a wearer, each of the straps including a connection tab, where a first connection tab, which is associated with a first strap, has a shape corresponding to the shape of the first connection receptacle, and where a second connection tab, which is associated with a second strap, has a shape corresponding to the shape of the second connection receptacle.

Abstract: A gas sensor device including a housing, a porous member through which the analyte gas is transportable in operative connection with the a of the housing to separate an inner chamber of the housing from the ambient environment, a gas sensor responsive to the analyte gas within the inner chamber, a source of pressure waves positioned within the inner chamber and spaced from the porous member so that any pressure waves emitted from the source of pressure waves that are transmitted out of the inner chamber are transmitted through the porous member, a sensor responsive to pressure waves, and circuitry in operative connection with the sensor responsive to pressure waves to relate a phase of a measured response of the sensor responsive to pressure waves to a state of blockage in the porous member.

Abstract: A gas sensor device to detect an analyte gas in an ambient environment includes a housing including an inner chamber and a port, a porous member through which the analyte gas transports in operative connection with the port to separate the inner chamber from the ambient environment, a sensor responsive to the analyte positioned within the inner chamber, a source of pressure waves positioned within the inner chamber, a sensor responsive to pressure waves positioned within the inner chamber; and circuitry in operative connection with the sensor responsive to pressure waves to relate a response of the sensor responsive to pressure waves to a state of blockage in the porous member.

Abstract: A gas detection device for detection of one or more gas analytes in an environment includes a housing including an inlet via which gas to be sampled from the environment enters the housing, a control system within the housing comprising a processor system and a memory system in communicative connection with the processor system, and one or more gas sensors within the housing in fluid connection with the inlet and in communicative connection with the control system. Each of the one or more gas sensors is independently responsive to one of the one or more gas analytes. The control system is configured to control flow rate of gas from the environment through an accessory device assembly including one or more accessory devices in fluid connection with the inlet on the basis of data for the accessory device assembly in fluid connection with the inlet.

Abstract: Systems and methods are provided for a helmet shell mounting assembly. A system includes a mounting component and a locking slider configured to interface with the mounting component when the locking slider is in an engaged position to secure an outer helmet shell to an inner helmet. In another embodiment, the system also includes an anchor that is configured to pass through the outer helmet shell via a through hole and be received by the mounting component, and the locking slider is configured to retain the anchor within the mounting component when the locking slider is in the engaged position.