Abstract: In various embodiments, both very high speed and very high sensitivity hydrogen detection is achieved by controlling water vapor concentration over the catalyst used to convert hydrogen in sample gas (e.g., ambient air) to water vapor, to provide a substantially stable water vapor mixing level at a target mixing ratio. The naturally-occurring water vapor in the sample gas, without further steps, typically would vary over time within a wide range (e.g., due to changing atmospheric conditions). By controlling a level of water vapor over the catalyst to be substantially equal to a target mixing ratio that is not too low as to impair response time, and not too high as to impair sensitivity, both very high speed and very high sensitivity can be provided.

Abstract: A refuse vehicle includes a chassis, a plurality of tractive elements coupled to the chassis, and a lift assembly including a carriage, a grabber arm selectively repositionable between an engaged position and a disengaged position, a track configured to be coupled to a chassis of the refuse vehicle, and a roller assembly slidably coupling the carriage to the track. In the engaged position, the grabber arm is configured to couple a refuse container to the carriage. The track defines a track groove extending at least partway along a length of the track. The roller assembly includes a base coupled to the carriage, a shaft coupled to the base and extending outward from the base, a roller extending at least partially into the track groove, the roller defining first a central aperture that receives the shaft, and a bushing that rotatably couples the roller to the shaft.

Abstract: A refuse vehicle includes a chassis, a plurality of tractive elements coupled to the chassis, and a lift assembly including a carriage, a grabber arm selectively repositionable between an engaged position and a disengaged position, a track configured to be coupled to a chassis of the refuse vehicle, and a roller assembly slidably coupling the carriage to the track. In the engaged position, the grabber arm is configured to couple a refuse container to the carriage. The track defines a track groove extending at least partway along a length of the track. The roller assembly includes a base coupled to the carriage, a shaft coupled to the base and extending outward from the base, a roller extending at least partially into the track groove, the roller defining first a central aperture that receives the shaft, and a bushing that rotatably couples the roller to the shaft.

Abstract: A lateral access limitation system for a vehicle includes a first structural member configured to be coupled to a side portion of the vehicle, a second structural member including a first end and an opposing second end, the first end and the opposing second end of the second structural member releasably coupled to the first structural member, and a third structural member coupled to the second structural member. The third structural member is positioned to prevent unintended access to a protected region. The second structural member and the third structural member are configured to selectively pivot about both the first end and the opposing second end of the second structural member to facilitate accessing the protected region.

Abstract: A lateral access limitation system for a vehicle includes a first structural member configured to be coupled to a side portion of the vehicle, a second structural member including a first end and an opposing second end, the first end and the opposing second end of the second structural member releasably coupled to the first structural member, and a third structural member coupled to the second structural member. The third structural member is positioned to prevent unintended access to a protected region. The second structural member and the third structural member are configured to selectively pivot about both the first end and the opposing second end of the second structural member to facilitate accessing the protected region.