Abstract: An external fixation system for treatment of bones includes first and second clamps for locking pins that are inserted into bones. At least one clamp includes a socket having a recess. An attachment post includes a distal portion configured to be inserted into the socket recess. A tightening nut is rotationally coupled to a shaft of the attachment post and has an internal threading adapted to be threaded to the external threading of the socket. When the tightening nut is rotated to cause the distal portion of the post to be further inserted into the recess, the sides of the distal portion of the post create an interference fit with the sides of the socket recess to lock the post to the first clamp.

Abstract: A customizable card wallet accommodates a plurality of credit and identification cards. The wallet comprises a substantially rectangular top plate having a window opening in the central portion thereof, a substantially rectangular bottom plate having a pair of oppositely disposed relief channels at the periphery thereof for receiving a pair of oppositely disposed internal springs, and a substantially U-shaped card body interposed between the top and bottom plates, thereby defining an interior pocket. Upon insertion of at least one credit or identification card within the interior pocket, the internal springs urge the at least one card against the top plate interior facing surface.

Abstract: A customizable card wallet accommodates a plurality of credit and identification cards. The wallet comprises a substantially rectangular top plate having a window opening in the central portion thereof, a substantially rectangular bottom plate having a pair of oppositely disposed relief channels at the periphery thereof for receiving a pair of oppositely disposed internal springs, and a substantially U-shaped card body interposed between the top and bottom plates, thereby defining an interior pocket. Upon insertion of at least one credit or identification card within the interior pocket, the internal springs urge the at least one card against the top plate interior facing surface.

Abstract: A tool carrier-and-opener comprises a body, an adapter and a fastening element. The body includes a back segment, a pair of side segments extending inwardly from the back segment, and a magnet extending through an opening formed in the back segment. The magnet is preferably disposed along the longitudinal midline of the back segment and used to hold a tool, such as a multi-tool, housed in the body. In preferred embodiments, the magnet is rubber-coated to grip and stabilize the tool. The multi-tool can be removed from the carrier-and-opener by sliding the multi-tool upward to exit from the top of the body or by pushing the multi-tool forward to exit from the front of the body. Once the multi-tool is removed, it can be opened using the magnet. Both the removal and opening of the multi-tool can be accomplished singlehandedly by a user.

Abstract: A fuel depot in space is provided. The fuel depot has a collapsible housing with a guidance, navigation, and control (GNC) system, a power management system, and a reaction control system (RNC). Connected to the housing are a plurality of fuel tanks that are connected via collapsible rods. The fuel tanks have pipe systems that are in communication with a plurality of pumps to transfer fuel from the tanks through a refueling arm and into a spacecraft during refueling.

Abstract: A fuel depot in space is provided. The fuel depot has a collapsible housing with a guidance, navigation, and control (GNC) system, a power management system, and a reaction control system (RNC). Connected to the housing are a plurality of fuel tanks that are connected via collapsible rods. The fuel tanks have pipe systems that are in communication with a plurality of pumps to transfer fuel from the tanks through a refueling arm and into a spacecraft during refueling.