A retainer assembly for securing a sheet-like material to a wall comprising an elongated stud having an inner end welded to the wall and extending outwardly therefrom so as to be perpendicular to the wall, the stud having a pointed outer end whereby the sheet-like material can be impaled thereon and positioned so as to be adjacent the wall, the stud being provided with a longitudinal slit extending from the outer pointed end to a location adjacent the inner end so as to form a pair of longitudin...

An improved technique for providing air tight insulation for a window, particularly a double-hung window, in which there is provided a window panel separating bead for carrying one or more gaskets extending longitudinally of the bead and adapted to be in a folded engaged position for providing an air tight seal between the window panel frame and the bead.

Electrical insulation comprises (1) an inner layer of a cross-linked polymer, e.g. polyethylene, an ethylene/tetrafluoroethylene copolymer, an ethylene/chlorotrifluoroethylene polymer or a vinylidene fluoride polymer, and (2) an outer layer of an aromatic polymer having a glass transition temperature of at least 100.degree. C., e.g. a polyether ether ketone, a polyether ketone or a polyether sulfone. Such insulation combines excellent properties under normal service conditions with low smoke evo...

Insulation of structures making use of plastic strips which are proportioned and disposed to achieve a desired insulation effect.

The device includes a shell with a mat of insulation material therein, held by friction. The shell is secured to a building, in position extending across a juncture line where a hole or gap exists. It has a mounting strip at the top edge, which also serves as a wheather protector. In one form the shell is made of wood, and includes a mounting timber at the top having an inclined edge engaging the building and thereby biasing the lower portion against the building, eliminating the need for secure...

Thermal insulation for placement in a gas-tight and at least partially evacuated space in a hollow chamber, including insulating material in fiber form, and at least one substance admixed to the insulating material for absorbing and/or scattering thermal radiation.

An insulator holder is provided herein which allows a lineman to service or repair porcelain insulators without being subjected to the hazzards of broken or cracked insulators. The insulator holder provides a plurality of jaws which converge toward a base whereby the insulator can be firmly held in place during maintenance. One embodiment of the device includes adjustable jaws which can be positioned according to the size of the insulator being repaired.

Pipe insulating units are disclosed which can be slipped radially over the pipe. The units are formed such that two adjacent pieces interlock to form a set which completely surrounds the pipe and which has parallel faces which are abutted by the parallel faces of adjacent sets. The units and sets are then held together by bolting or other means. Each unit comprises a circular piece of insulating material having a hole in the center thus forming an annular disc. This annular disc has a portion of...

Apparatus for cutting pieces of insulation used to line specially-shaped ductwork, such as radius elbows and O. G. sets. A pair of telescoping trammel tubes are pivotal about a pivot post, and radially movable with respect to the post to assume any desired, graduated, relative position. A cutter wheel is disposed on the end of each of the trammel tubes, and the cutter wheels may be movable from one position wherein they are in line with the trammel tubes, and thus can make a radial cut, to a sec...

An improved insulation panel, which includes first and second extruded elongated aluminum plates, one of which contains a channel and the other a projection, by means of which they are placed in abutting engagement to form a single panel with a tongue formed on the end of one of said plates and a groove on the other of said plates, to permit placing a plurality of panels in abutting relationship without gaps therebetween, and in which, on the outside edges of each of said plates, and thus on the...