Abstract: A shroud retention system for a work tool is disclosed. The shroud retention system may have an adapter attached to the work tool. The shroud retention system may also have a shroud that slidably engages with the adapter. The shroud may have a retainer slot. Further, the shroud retention system may have a spring assembly disposed in the shroud. The spring assembly may have a block that slidably moves relative to the adapter. The spring assembly may also have a resilient member disposed between the adapter and the block. In addition, the spring assembly may have a retainer disposed in the retainer slot. The retainer may engage with the block. The retainer may have at least one recess disposed on the retainer front face or on the retainer rear face. The recess may extend partway toward the other of the retainer front face or the retainer rear face.

Abstract: A system and a method for displaying an internal component of a physical object involve receiving an image captured by a camera. The image includes an external view of the object. A position of the camera relative to the object is calculated based on the captured image. Afterwards, an image is generated using the calculated relative position. The generated image shows the object from a perspective of the camera. When the camera's perspective overlaps with a specified internal component of the object, the generated image includes the internal component. The image is output for display.

Abstract: A communication system provides communication services to a plurality of communication devices. The communication system includes a transmitting antenna, a transmitter, a first receiving antenna, a second receiving antenna, a second receiver, and a communication interface. The transmitter transmits first wireless signals via the transmitting antenna. The first receiving antenna has a first coverage area of less than forty five degrees. The first receiver receives second wireless signals via the first receiving antenna. The second receiving antenna has a second coverage area of less than forty five degrees, and the second coverage area of the second receiving antenna is within the first coverage area. The second receiver receives third wireless signals via the second receiving antenna. The communication interface provides the communication services between the communication network and the user communication devices.

Abstract: Bearing arrangement for a creel for holding a wind-on bobbin for winding on an elongate textile strand, wherein the bearing arrangement has a bushing, which surrounds a pin, wherein alternatively either the bushing or the pin is non-rotatably connected to the creel, and wherein the pin and bushing can be rotated relative to one another, so the creel is pivotable. According to the invention, the bushing (15, 15A) is fixed by means of a press ring (16, 16A) positioned with a press fit on the bushing (15, 15A).

Abstract: A wireless communication system includes a transmitting antenna, a transmitter, a directional receiving antenna, a receiver, and a communication interface. The transmitter transmits first wireless signals via a transmitting antenna. A directional receiving antenna has an angle of less than forty five degrees and the directional receiving antenna is directed toward an angular area of less than forty five degrees. A receiver receives second wireless signals via the directional receiving antenna. A communication interface is connected to the receiver, the transmitter, and a communication network. The communication interface provides the communication services between a communication network and the user communication devices.

Abstract: The invention relates to a method for operating a four-stroke internal combustion engine with natural gas. In this method, at high to full torque operating conditions, the natural gas is injected directly into the cylinder of the engine toward the end of the induction stroke or at the start of the compression stroke. This may take place in particular in a crank angle range between 210° and 90° before top dead center. The efficiency of the engine is thus improved without generating a gas pressure higher than the storage pressure. It is preferable for the engine to be operated with a stoichiometric air/fuel ratio.

Abstract: A battery powered hand-held portable computer device for audible processing of messages stored at one or more remote central message facilities. A telephonic interface is included within the portable computer device. A connection between the portable computer device and the remote central message facility is automatically established in response to a connection to a telephonic network and the operation of a single switch. Thereafter, selected audio and/or digital messages from a remote central message facility are transferred to the portable computer device, digitized if necessary, and stored within random access memory or stored utilizing analog storage systems. The portable computer device preferably utilizes a limited number of tape recorder-like switches. In response to a single operation of a "start" switch, electronic messages stored in a digital format are sequentially coupled to a text-to-speech conversion application and converted to audible speech through a speaker or headphone.