A switch structure characterized by a pushbutton-rotatable switch handle and a plurality of switch blocks mounted in tandem, the switch blocks comprising molded base and cover portions which provide an insulating barrier between the moving and stationary contact arms for increased current capabilities, and the switches having reciprocable switch operating plungers which are actuated either together or separately by longitudinal or rotary movement of the switch actuator.

A marine structure includes a base which is to be founded upon the sea bed. An elastic pre-stressed column is rigidly fixed to and extends upwardly from the base. A buoyant, rigid structure is fixed to the upper end of the upstanding elastic column. The buoyant, rigid structure includes a submerged part and a part projecting up above the sea level to support a deck superstructure. The pre-stressed elastic column is designed to deflect in a curved manner when the buoyant, rigid structure is subje...

An elongated, hollow stud, or wall support member, is formed of sheet material, and has at least one longitudinally extending planar wall. The wall is formed with a longitudinally extending series of rectangularly formed holes, the holes being so aligned as to each receive a wall panel retainer so disposed therein as to effect an abutting relationship between the edges of two adjacent wall panels. The retainer has a spring tensioned clip portion removably insertable through the holes to project ...

A tire structure which augments a conventional tire structure by including therein a load transferring configuration in each sidewall from the bead to the tread. The beads of each sidewall are contacted tangentially by a plurality of elongated connecting members and the sidewall area between the bead and the connecting members is reinforced.

The apparatus disclosed includes essentially a cot structure comprising, in combination, a folding frame having a flexible cover yieldable to body contour, and legs supporting said frame in displaced relation to a floor surface; said legs having a spring cantilever configuration and torsion residing in a single continuous bar member with opposite ends adapted to be received and held by said frame member; sockets so disposed in said frame member adapted to slidably receive the opposite ends of sa...

A hollow columnar structure fabricated from at least two, part-oval, extruded aluminium sections and intended for use as a sailing vessel mast or boom, a lamp standard or as piping. The sections each have a longitudinally extending groove along each of the longitudinal edges thereof, the grooves of one section being contiguous with the grooves of another when the sections are placed in position to form the columnar structure. Each groove is T-shaped in section whereby, when two such grooves come...

A folding paperboard carton including self-positioning, self-locking bottom wall panel structure, and mutually confronting, first side wall panels connected by mutually confronting hinged second side wall panels. The bottom wall panel structure a first bottom wall panel hinged to one of the confronting first side wall panels, and a second bottom wall hinged to the other of the confronting first side wall panels. The first bottom wall panel includes tab means affixed thereto, in the folded mode o...

A support structure comprising a pair of support units each including a housing and a ball stud having a ball portion placed in the housing and a shank portion formed integrally with the ball portion, the upper support unit having its ball stud shank portion extending downward from the housing fixed to an upper structure such as a bridge girder, the lower support unit having its ball stud shank portion extending upward from the housing fixedly embedded in a lower structure such as a bridge base ...

A recuperator structure for recovering heat values from a hot gas stream comprising exhaust gases from a combustion burner supplied with combustion air for burning a fuel in which a heat exchanger is used for exchanging heat between the hot exhaust gases and the combustion air for preheating the combustion air and including a variable temperature control for selectively restricting the volumetric flow of either the air or the exhaust gases or both through the heat exchanger in order to control t...

The specification discloses a vertical framework structure extendable in both lateral and longitudinal directions. The structure comprises a plurality of vertical columns which are tubular members having a rectangular cross-section. At least two vertical opposing faces of the column are provided with a series of pairs of vertically and horizontally aligned spaced mounting slots. The structure further includes at least one lateral bracing member adapted to support a shelf, and extending between a...