An improved propeller shroud comprising a toroidal cavity formed on its inside surface along its entire periphery level with the blades of said propeller and along the meridian of the shroud and movable flaps mounted on downstream of same cooperating with a cavity bottom comprising a retractable wall with or without streamlined partition walls adapted within said toroidal cavity and along substantially meridian planes of said shroud.

A rotary welding gun comprising a handle, an intake of gas utilized to prevent any oxidation of the weld, an inlet of cooling water, an electric current input, all the intakes being contained in a conduit in the interior of the handle, a built-in motor driving an axial shaft, a positioning mandrel projecting towards the exterior round the said axial shaft at its free extremity opposite to that of the motor, a centering means, a torch-mounted eccentric radially with respect to said mandrel, axial...

A method for providing metal castings by using disposable wax dies, comprising through a predetermined and completely automatic cycle a previous degassing step of the die by sucking from the bottom and then the pouring step of the molten metal by a combination of suction from the bottom and pressure from the top on said die, the pressure being applied when degassing approaches the molten metal in the die pot.

The present disclosure is concerned with a photo frame with a hidden light illumination loop made of light transmitting material, a DC or AC-operated light source can provide necessary light delivered by the light illumination loop all around the frame and cast on the photo located within the frame. The light source is preferably made of LED bulb components. The frame includes a front cover having a central opening for the exposition of a located photograph, an intermediate light illumination lo...

"A multi-purpose cartridge type handle assembly" utilizing a movable block wedged in a "U"-shaped bracket and urged by a spring to hold various adaptors fitted with special sanitary tools for flexible operations.

Modular wall panel structure comprising panels having a supporting skeleton of stiles, rails, and mullions of substantially uniform hollow rectangular section and wherein each vertical margin of a panel includes two spaced stiles and wherein each panel includes two spaced bottom rails as well as a top rail and two spaced mullions extending vertically from the top rail to an uppermost bottom rail.

The present disclosure is related to an improved electrically-operated gear rotor pump mainly adapted for automobile fuel injection system; a dc motor in driving connection with the pump is housed together with the pump in a unitary housing. The driving shaft of the dc motor is in coupling engagement with the gear rotor pump by means of a floating coupling device having H-shaped longitudinal cross section. The terminal end of the dc motor shaft is defined in a rectangular form so that it can be ...

A method and apparatus for locating a catheter adjacent to a pacemaker node of the heart. The placement of a catheter tip just before SA heart pacemaker node is a common and desired procedure in medicine, with the most serious complication being its accidental advancement of the beyond this point placing its tip into the heart, with often fatal complications. The catheter tip location just before SA heart pacemaker node is desired because is most often the safest and optimal location. The cathet...

A method and apparatus for guiding a physician in the placement of a probe in the body. The method of placement of a catheter or probe in the body through a multi-directional walled path departing from a straight line involving inserting an insulated catheter or probe with a distal uninsulated tip which is electronically connected in a circuit to an electronic catheter guidance system apparatus located outside the patients body which has a power source and a calibrated monitor. The catheter is a...

A method and apparatus for locating a catheter adjacent to a pacemaker node of the heart. The placement of a catheter tip just before SA heart pacemaker node is a common and desired procedure in medicine, with the most serious complication being its accidental advancement of the beyond this point placing its tip into the heart, with often fatal complications. The catheter tip location just before SA heart pacemaker node is desired because is most often the safest and optimal location. The cathet...