Abstract: An apparatus for applying a coating to an object includes a pair of reciprocating members which each include a porous resilient pad mounted for movement toward and away from each other. The apparatus includes a coating supply system for supplying coating to the resilient pads. The pads have a movement sequence from an initial rest position where the pads are spaced apart from one another to a coating loading position where the pads are in physical contact and have a degree of compression with each other to load the coating onto the pads, then the pads are moved to an intermediate rest position with the pads spaced apart an the object to be coated is moved between the pads. The sequence then includes a coating delivery position where the pads are in physical contact with each other and the object so that the pads have a degree of compression with each other and the object thereby applying the coating to the object.

Abstract: An apparatus for applying a coating to an object includes a pair of reciprocating members which each include a porous resilient pad mounted for movement toward and away from each other. The apparatus includes a coating supply system for supplying coating to the resilient pads. The pads have a movement sequence from an initial rest position where the pads are spaced apart from one another to a coating loading position where the pads are in physical contact and have a degree of compression with each other to load the coating onto the pads, then the pads are moved to an intermediate rest position with the pads spaced apart an the object to be coated is moved between the pads. The sequence then includes a coating delivery position where the pads are in physical contact with each other and the object so that the pads have a degree of compression with each other and the object thereby applying the coating to the object.

Abstract: A method for visualization of a lubricant coating on a surface of an article includes dissolving a fluorescent agent into a lubricant. The method then includes applying the fluorescenated lubricant to coat a surface of the article. The coated article is then irradiated with an electromagnetic radiation capable of inducing a fluorescent emission in the fluorescent agent and the fluorescent emission is observed to detect the coverage of the lubricant on the surface of the article.

Abstract: An apparatus for applying a coating to an object includes a pair of rotating members each including a porous resilient roll mounted for counter-rotatory movement. The members are mounted so that they contact each other during a segment of the movement and are out of contact with each other at other segments of the movement. The apparatus includes a coating supply system for supplying a coating to the resilient rolls. The rotatory movement of the members includes a coating loading segment where the resilient rolls are in physical contact and have a degree of compression with the coating supply system for loading the coating into the rolls. The sequential movement also includes an intermediate segment where the resilient rolls are out of contact with each other and where an object to be coated is movable into position for movement between the resilient rolls when the rolls are in a coating delivery segment.

Abstract: An apparatus for applying a coating to an object includes a pair of rotating members each including a porous resilient roll mounted for counter-rotatory movement. The members are mounted so that they contact each other during a segment of the movement and are out of contact with each other at other segments of the movement. The apparatus includes a coating supply system for supplying a coating to the resilient rolls. The rotatory movement of the members includes a coating loading segment where the resilient rolls are in physical contact and have a degree of compression with the coating supply system for loading the coating into the rolls. The sequential movement also includes an intermediate segment where the resilient rolls are out of contact with each other and where an object to be coated is movable into position for movement between the resilient rolls when the rolls are in a coating delivery segment.

Abstract: A method for visualization of a lubricant coating on a surface of an article includes dissolving a fluorescent agent into a lubricant. The method then includes applying the fluorescenated lubricant to coat a surface of the article. The coated article is then irradiated with an electromagnetic radiation capable of inducing a fluorescent emission in the fluorescent agent and the fluorescent emission is observed to detect the coverage of the lubricant on the surface of the article.

Abstract: A metal article has a coating of a noncuring polar lubricant. Preferred articles are of stainless steel and may be cutting devices such as needles, lancets and cannulas or sliding devices such as stylets and guidewires. Preferred noncuring polar lubricants are polysiloxanes terminated with a polar group. Particularly preferred lubricants are aminoalkyl or carboxyalkyl polysiloxanes. The lubricated metal article may be in a sliding relationship with a plastic article such as a catheter-guidewire or a catheter-cannula assembly. The plastic portion of the assembly may also include a lubricant.

Abstract: A leach resistant composition includes a quaternary ammonium complex of heparin and a silicone. A method for applying a coating of the composition to a surface of a medical article is within the purview of the present invention. Medical articles having surfaces which are both lubricious and antithrombogenic, are produced in accordance with the method hereof.

Abstract: A leach resistant composition includes a quaternary ammonium complex of heparin and a silicone. A method for applying a coating of the composition to a surface of a medical article is within the purview of the present invention. Medical articles having surfaces which are both lubricious and antithrombogenic, are produced in accordance with the method hereof.

Abstract: A method for catheter tipping including applying to a catheter blank a layer of a noncuring aminoalkyl terminated polysiloxane lubricant, mounting the lubricated blank on a mandrel and advancing the mandrel-catheter assembly into a heated die so that the die causes the heated tip of the blank to assume the shape of the die. The catheter may then be cut beyond the shaped tip and easily removed from both the die and the mandrel.

Abstract: A method for lubricating a low surface energy polymeric surface includes plasma treatment of the surface. A film of a polysiloxane lubricant is applied to the plasma-treated surface to give an even coating of the lubricant which is stable for a protracted period of time.

Abstract: A lubricating film for preventing time-temperature dependent increase in adhesion in a catheter assembly including an interference-fitted thermoplastic catheter wherein a film of polydimethylsiloxane is deposited on the tip of the cannula, preferably from a solution of a volatile solvent.

Abstract: A counter current defroster-humidifier arrangement, having a plurality of layered sets of parallel air flow passages formed by corrugated paper-like or porous material, is located in the above-freezing compartment of a refrigerator. The device receives moisture-laden air from the above-freezing compartment for flow in one direction through first alternate sets of parallel layered sets of air passages. The moisture is both absorbed and adsorbed within the passages and transpires or diffuses through the passage walls into the second alternate layered sets of passages which receive cooled dry air exiting the evaporator chamber for flow in the opposite direction. Thus, the arrangement substantially reduces the moisture content of the food compartment air prior to its return to the evaporator chamber while maintaining the food compartment in a high humidity food preserving condition by returning the transpired absorbed and adsorbed moisture to the chilled return air.

Abstract: A shaft seal structure located in the annular space between a pump housing and a relatively rotatable shaft. The seal includes an outer cup member, a plurality of intermediate plastic washers, an inner spring disc member and an assembly retainer. The cup member has a radial portion formed in an inward arcuate frustoconical section defining an opening which encircles the shaft in closely spaced relation with a concavity of cup adapted to face the high interior pressure of the housing. The annular resilient plastic washers are supported such that high interior pressures during operation of the pump are operative to force the washers into layered conformity with the concavity of the outer cup section, while lubricant-containing capillary means are provided intermediate the washers.

Abstract: A moisture indicator particularly adapted for use in a refrigerant system to indicate by visual inspection the moisture content of refrigerant therein. A preferred embodiment of the indicator comprises a hygroscopic plastic sleeve which is mounted behind a sight glass within a housing such as a receiver. The whole sleeve can be impregnated with a cobalt salt whose color changes when exposed to water. In use, the color of the indicator may be visually compared with a reference color stripe which does not change color with the addition of moisture and which is preferably applied adjacent the cobalt salt. The sleeve can also be non-hygroscopic plastic, or even metal, coated with a thin film of hygroscopic plastic containing cobalt salts.