A visor protector prevents a visor secured to a helmet from being scratched when not in use such as during transportation thereof. The protector includes a protective member that essentially covers at least the external surface of the visor. The protective cover is biased in pressuring configuration against the visor by stretchable straps secured to the protective member and releasably attaching to the helmet in stretched configuration. Preferably, the protective member includes an internal shel...

A vapor generator comprising an evaporator unit, which in turn includes an inner chamber for containing a first fluid in a liquid state, and further includes a preheated liquid inlet and a vapor outlet, the evaporator unit having a heating device therein which can be activated for vaporizing the first fluid contained in the inner chamber to generate vapor. The vapor generator further comprises a preheating tank defining an inner chamber and comprising a liquid inlet for injection of the first fl...

The self-cleaning filter is used for filtering incoming dirty liquid and distinctly recuperating clean liquid and waste liquid. The filter comprises a housing having an inner chamber defining first and second inner chamber portions, and an outer chamber; a filtering screen mounted to the housing and separating the inner and outer chambers; first and second inlet ports in the housing for allowing dirty liquid to flow respectively into the first and second inner chamber portions; a clean liquid ou...

This centrifugal apparatus comprises a primary frusto-conical filter screen rotating about a vertical axis, which is closed at its smaller diameter end and which is surrounded at its larger diameter upper end by a flat horizontal imperforate ring. A secondary cylindrical filter screen is fixed to and upstands from the periphery of the flat imperforate ring. The solid-liquid mixture is fed to the bottom of the primary filter screen and moves up under centrifugal force, the liquid being filtered a...

The whirlpool tub includes a rigid tub shell inserted into the opening of a surrounding podium. The tub is to be filled with hot water. A first insulation membrane is installed spacedly around the tub inside the podium, defining a first closed air pocket between the tub and this first insulation membrane. A second insulation membrane is installed spacedly around the first insulation membrane, also inside the podium, defining a second closed air pocket between the first and the second membranes. ...

A method of attachment of a ski to a snowmobile, the snowmobile capable of displacement about a gliding surface. The method comprises the step of providing the snowmobile with at least one steering link defining a push axis. It also comprises the step of providing a snowmobile ski having a ski body defining an undersurface, a snowmobile mounting member connected to the ski body, and at least one blade member attached to the ski body and arranged about the ski body undersurface, the blade member ...

An exterior weather shielding panel assembly for fitting against an external side wall of a building, comprising a rigid back board for anchoring engagement with the building side wall, a waterproofing membrane applied against the back board, an air ventilating screen applied against the waterproofing membrane opposite the back board, and a plurality of shingles disposed against the screen outer face in slopewisely cascading fashion. Nails concealed by the overlapping sections of upper rows of s...

An oil separating buoyant surface vessel for separating oil from surface water level from a large body of oil-contaminated water and for economically reclaiming this oil The vessel comprises a pair of lateral buoyancy members and a liquid flow-through separator rigid open frame integral to the buoyancy member and destined to be maintained in partly submerged condition in water. The separator frame comprises a first chamber having a front surface water intake port, and a pair of first channel mem...

An apparatus and method allowing an optimized illumination in a light profile microscope by excitation of a sample with an elliptically collimated beam. The beam, which is typically supplied by a laser is collimated with unequal beam waist radii (and Rayleigh ranges) along major and minor axes orthogonal to a propagation direction, and approximates a plane sheet of illumination. The plane sheet of illumination is aligned with a thinnest width dimension thereof along the optic axis of the microsc...

A pair of spaced, parallel beams are designed to hold a group of aligned, contiguous article carrying pallets. Each beam has a web of uniform width with a lower, inturned flange to extend under the side edges of the aligned pallets and an upper outturned flange to be picked up by the pivoted jaws of a crane. These jaws together with a pusher/puller carriage are mounted on a long frame suspended from the crane which travels across one face of a rack in which pairs of parallel tracks are arranged ...