A multiple sensor smoke detector includes at least an ionization and a photoelectric sensor. Outputs from the sensors are fed to circuitry for generating continuously variable coefficients. One coefficient corresponds to each sensor output. Respective coefficients and sensor outputs are multiplied in multiplier circuitry to produce processed outputs. The processed outputs are combined in a summing...

A method for forming parts from inorganic particulate materials is disclosed. The method utilizes a two-component binder composition which is removable at a faster rate than conventional binder compositions, thereby reducing the formation of voids and cracks that occur during binder removal. No toxic materials are required and the method does not rely on solvents. The method may be used with ceram...

Apparatus for combining two measurements of pressure where one measurement is obtained from a first pressure gauge (1) having good long-term stability and a second pressure gauge (2) having good dynamic response where the two measurements are combined in a signal processing means to provide a single measurement with good long-term stability and good dynamic response. The apparatus is preferably on...

Dans une composition organopolysiloxanique génératrice de mousse élastomère, comprenant au moins un polyacyloxyorganopolysiloxane obtenu par fonctionnalisation, par un polyacyloxyæilane, d'au moins une huile réactive qui est un polysiloxane polyhydroxylé destiné à réagir en présence d'eau pour former l'élastomère avec formation d'acide de formule R'COOH, dans laquelle R' représente un radical hydr...

An electrosurgical hemostatic instrument is provided in which the coagulation status of tissue engaged by two elements delivering an electrosurgical energy to tissue may be observed, and in which damage from thermal spread may be minimized. A preferred embodiment of the invention provides a bipolar endoscopic clamping, coagulation and cutting device. In this device, the outer conductive surface of...

Compounds of formula (I): (I) wherein- R1 is methyl, ethyl, isopropyl or sec-butyl; X is carbonyl or methylene; Z is =C=(R2)2 or =C=(CH2)m (in which R2 is alkyl, and m is integer of from 2 to 5); n is 0 or 1; R3 is nitro, amino, alkylamino, dialkylamino, alkoxy, alkoxyalkoxy, or a group (iii), (iv), (v), (vi), (vii), (viii) or (ix): (iii) (iv) (v) (vi) (vii)

Disclosed are methods and corresponding apparatuses utilized in the production of ophthalmic lenses, and more specifically for the separation of the corresponding mold halves between which contact lenses are produced. The method to which the several variations of this invention are directed includes: (1) loosening one of the mold halves relative to the contact lens by applying a thermal gradient a...

The present invention is directed to a composition comprising polystyrene or polypropylene with at least 0.05% (w/w) of an additive or wetting agent, the article of manufacture comprised thereof, such as a mold for making contact lenses and the mold assembly containing said mold, and the use of such mold so to minimize defects, such as holes, puddles, chips and tears in the lens.

Hydrophilic contact lens molds are transiently modified to provide a water dynamic contact angle equal to or less than 100.degree. by treatment with a wetting agent which may be water or a surfactant composition which provides a mold surface having a water wetting force of at least 70 mg to afford a reduction in lens hole defects in hydrophilic contact lens manufacture.

A method for producing visible marks in molded contact lenses, particularly soft hydrogel contact lenses, by placing a recessed mark configuration in a metal insert. The metal insert is subsequently used to produce injection molding frames, which are then subsequently used in the molding of the final contact lenses. The recessed mark configuration is at least approximately 10 microns deep, has a V...

An apparatus for molding polystyrene mold halves which are used, with a complementary mold halves, for subsequent molding of a soft contact lens such as a hydrogel soft contact lens. The apparatus is designed with superior heat conduction capacity so as to minimize the molding cycle time, while simultaneously producing uniformly precise and accurate optical quality surfaces. Molten polystyrene is ...

The present invention is directed to an automated apparatus for consolidating serial product flow wherein the product flow includes random variations in the flow. The present invention provides a consolidation buffer for receiving the serial products from the production line, and then consolidating random variations in the product flow. The automated robotic handling means then selects a predeterm...

A method and apparatus have been devised for analyzing abnormal conditions of gait and posture and for translating such analysis into biomechanical correction through the utilization of orthotics alone and in combination with other measures and which includes a walking platform upon which a patient can stride, video cameras directed at the patient including a frontal camera, lateral camera, overhe...

There is provided a process for injection molding a preform for stretch blow molding a thin-wall vessel such as a bottle using amorphous polyethylene terephthalate (A-PET) as a molding material, wherein a required amount of crystallized polyethylene terephthalate (C-PET) is added to the A-PET. The resulting mixture material can be easily plasticized to increase the IV value of the molding material...

This is a surgical instrument. It is a guidewire made of a stainless steel alloy core which is coated with a non-hydrophilic lubricious polymer on the majority of its length located proximally and a hydrophilic polymer located at the majority of the remaining distal length of the guidewire. Preferably, the guidewire has a polymeric tie layer located between the metallic core of the guidewire assem...

An empty medical bag which is heat sterilized and made of a matrix-phase polymer system. After heat sterilization at 121.degree.C, the inside surfaces do not adhere to each other.

A scanning optical rangefinder including an optical scanner and a light source. The optical scanner includes a rotating scan disc with a circular array of conave reflectors thereon. Mirrors are provided for directing light from the light source towards the concave reflectors on the rotating scan disc and then to direct light from the concave reflectors on the scan disc towards a target. Light rece...

An apparatus and method for aiming a vehicle headlight to a standard image pattern includes a frame movable relative to the vehicle. A housing carried on a vertically adjustable housing includes a lens 68 focusing a headlight beam onto a reflective screen 60 which reflects the beam image to a camera 80. A control compares areas of the digitized image output from the camera with a standard image pa...

The intake opening for water-massage baths described has an internal valve member (24) the closure member (26) of which is movable between a shut-off or closure position in which it prevents water from flowing from inside the opening into the intake pipe (18) thereof and a fully-open position in which it allows water to flow through. The closure member (26) is hinged on the body (12) of the openin...