In a method of connecting, for example, two coaxial cables, an electrical connection between the outer cable conductors is made by means comprising a hollow dimensionally-recoverable member, solder, and an electrically conductive deformable member at least a part of which is deformed by recovery of the recoverable member, and the impedance of the electrical connection between the cables and the inner dimensions of the electrical connection between the outer conductors are controlled by a spacer ...

A pipe spacer is provided of blow molded plastic having two opposite sides with corresponding semi-cylindrical recesses therein corresponding to one half of the circumference of a pipe to be spaced.

A piece usable to maintain a slight space between groups of laid floor boards until the floor has been fully laid. The piece has a head adapted to be grasped between the fingers, a pendent tongue insertible into the space, and a wide base with feet seating the piece squarely on the floor boards adjoining the space.

The pallet of the invention includes a load deck supported on pallet feet or spacers. The spacers of the invention are metal sleeves, each with a serrated upper edge, the entire length of which is pressed into the wooden load deck to substantially the entire depth of the serrations. The serrations may be alternately set in opposite directions, and function to prevent turning and lateral movements of the spacers in relation to the load deck. The spacers are each retained against the load deck by ...

An implant composed substantially of cortical bone is provided for use in cervical Smith-Robinson vertebral fusion procedures. The implant is derived from allograft or autograft cortical bone sources, is machined to form a symmetrically or asymmetrically shaped (e.g. a substantially "D"-shaped) implant having a canal running therethrough according to methods of this invention, and inserted into the space between adjacent cervical vertebrae to provide support and induce fusion of the adjacent ver...

One embodiment of a hollow spinal spacer (10) includes a curved anterior wall (11) having opposite ends (12, 13), a posterior wall (15) having opposite ends (16, 17), two lateral walls (20, 21), each integrally connected between the opposite ends (12, 13, 16, 17) of the anterior (11) and posterior (15) walls to define a chamber (30). The walls (11, 15, 20, 21) include a superior face (35) and an inferior face (40). The superior face (35) defines a first opening (36) in communication with the cha...

A spinal spacer 300 for engagement between vertebrae is provided. The spacer includes a body 301 having a first end 311, an opposite second 315 end, a superior face 335 defining a superior vertebral engaging surface 337 and an inferior face 338 defining an inferior vertebral engaging surface 340. At least one of the vertebral engaging surfaces defines a set of migration resistance grooves 350. Each of the grooves 350 includes a first face 355 defining an angle of no more than about 90 degrees re...

Casing spacers for isolating carrier pipe mechanically, galvanically, and chemically from pipe casings. The spacers may be attached using fasteners to pipe joint restrainers or other ring structures which encircle carrier pipe. The spacers are more efficient to install in the field, provide robust mechanical structure and physical stability which does not degrade over time, provide additional protection to the pipe joints, and, because they may be attached to conventional structures instead of r...

One embodiment of a hollow spinal spacer (10) includes a curved anterior wall (11) having opposite ends (12, 13), a posterior wall (15) having opposite ends (16, 17), two lateral walls (20, 21), each integrally connected between the opposite ends (12, 13, 16, 17) of the anterior (11) and posterior (15) walls to define a chamber (30). The walls (11, 15, 20, 21) include a superior face (35) and an inferior face (40). The superior face (35) defines a first opening (36) in communication with the cha...

A reciprocating dialyzer is described for use as an artificial kidney or other extracorporeal mass transfer device. A dialyzer unit includes a membrane package having an aligned pair of thin semi-permeable membranes forming a chamber between the interior faces to receive fluid (such as blood) to be treated, and spacing elements in dialyzate chambers at the exterior faces of the membranes which contact the membrances and limit their expansion, while allowing chemical transfer to the dialyzate slu...