Styrene polymer foam that is more environmentally acceptable, capable of making foam insulation over a wide range of densities, decorative and does not require the modification of existing equipment for high pressure operation is prepared using a mixed blowing agent of carbon dioxide plus ethyl chloride and optionally a fluorocarbon to provide a foam having primary cells and secondary cells define...

A connector 12 for forming a mitred corner joint of door or window frames constructed from hollow extruded frame elements 2, 3 of substantially rectangular-section comprises two inserts 13, 13', each of which is secured within the rectangular- section of a respective frame element 2, 3 adjacent to a mitred end thereof, and a screw 14 to connect releasably the inserts 13, 13' and secure the mitred ...

A benzonaphthalene compound has the formula (I) wherein R1 represents (i) or (ii) -CH2OH; R6 represents or OR7 wherein R7 represents hydrogen, alkyl having 1-20 carbon atoms, monohydroxyalkyl or polyhydroxyalkyl, r' or r'' represent hydrogen, lower alkyl, mono or polyhydroxyalkyl, aryl or a residue of an amino acid or a sugar, or together form a heterocycle; R2 re...

A benzonaphthalene compound has the formula (I) wherein R1 represents (i) or (ii) -CH2OH; R6 represents or OR7 wherein R7 represents hydrogen, alkyl having 1-20 carbon atoms, monohydroxyalkyl or polyhydroxyalkyl, r' or r'' represent hydrogen, lower alkyl, mono or polyhydroxyalkyl, aryl or a residue of an amino acid or a sugar, or together form a heterocycle; R2 re...

A marine propulsion device 10 comprises a pivot housing 30 adapted to be mounted on the transom 14 of a boat for pivotal movement relative to the transom 14 about a generally vertical steering axis 21 and about a generally horizontal tilt axis 22. The pivot housing 30 includes a rear end and an opening 70. A propulsion unit 34 is removably connected to the rear end of the pivot housing 30 for pivo...

A marine propulsion device 10 comprises a pivot housing 30 adapted to be mounted on the transom 14 of a boat for pivotal movement relative to the transom 14 about a generally vertical steering axis 21 and about a generally horizontal tilt axis 22. The pivot housing 30 includes a rear end and an opening 70. A propulsion unit 34 is removably connected to the rear end of the pivot housing 30 for pivo...

A hydraulically controllable, leakproof holding valve is disclosed, and which is adapted to be attached in the lifting hydraulic line leading to a working cylinder or the like. The holding valve includes a slidably mounted control piston, which functions as a controlled non-return valve during periods when the working cylinder is stationary or being lifted, and the piston also functions as a throt...

A choke valve specially used for regulating the flow volume and with it the back pressure of liquids or gas while drilling through shallow gas bearing formations from an off-shore drilling platform. The valve comprises a flexible cylindrical valve element (8) positioned in the valve housing (1) flow passage and where the valve is so designed that the valve element's (8) flow area can be reduced by...

A choke valve specially used for regulating the flow volume and with it the back pressure of liquids or gas while drilling through shallow gas bearing formations from an off-shore drilling platform. The valve comprises a flexible cylindrical valve element (8) positioned in the valve housing (1) flow passage and where the valve is so designed that the valve element's (8) flow area can be reduced by...

It comprises upper and lower devices for locating each tube in the radial direction. There is a scale against which the liquid column can be read. There is also an arrangement for locking each tube in the axial direction. This also permits manual adjustment of the axial position of the tube relative to the scale.

In the starting position of the appts., the magnetic field-sensitive detector (10) is at a predetermined distance from the bottom (30) of the tank (3), and a stop (18) is located against a contact (19). Via a signal from an electronic unit (21), a drive motor (15) rotates rollers (14) in an anti-clockwise direction so that the vertically moving system (9) commences to move. At the same time, the s...

A tube (5) of flexible material has one end closed and its other end tightly connected to the bag wall around an aperture (4) in the bag neck secured by the closure (3). In order to remove harmful material such as insulating material contg. asbestos from a pipe conduit (40), the open mouth of the bag is applied against one side of the pipe and the bag closure is secured around the pipe on the othe...

The reinforcement fixture (20) is attached by bolts extending through the thickness of the door panel (1). It comprises a primary flat plate part resting on the door panel main surface (11) and a secondary such part (22) integral with the primary and at right-angles to it. The secondary platepart, in the closed position of the door, is located parallel and tightly adjacent to the lock closure plat...

The primary movement components work in conjunction with secondary such components belonging to a support in an intermediary position provided with apertures. This intermediary support has, in turn, its own primary movement components freely arranged away from a corresp. aperture (7) and functioning in conjunction with secondary such components located in an inner support (5) provided with apertur...