The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 2002
Filed:
Feb. 04, 2000
Kenneth R. Brown, Scottsdale, AZ (US);
Other;
Abstract
A pump is supported on a housing and has an inlet port coupled to a lubricant supply and an outlet port coupled to a tube outlet opening for delivering a predetermined amount of the lubricant during an activated cycle of the pump. An actuator, when triggered, operates in an actuated state for a predetermined duration during which time the pump is activated for one cycle and delivers a predetermined amount of the lubricant to the tube outlet opening. A switch is independently selectable for triggering the actuator to activate only the active cycle of the pump. The actuator may be a spring-biased solenoid or a timer circuit with a relay. The pump may be a piston-diaphragm type or any one of various motor driven types. The pump is activated for about 1 second, without also activating a cleaning cycle or a purging cycle and delivers ⅛ to ½ cc of a lubricant comprising about 90% by volume of a pharmaceutical grade mineral oil and about 10% by volume of NNL-690. The duration of the active cycle is adjustable and controls the amount of lubricant delivered by the pump. The lubricant is delivered at a pressure of about 2.6 psi well into the air intake hole of the handpiece while holding the handpiece upside down so as to assure that a maximum amount of the lubricant is delivered as near as possible to and reaches and remains in the handpiece rotor assembly to enable the formation of an effective eutectic film during a subsequent sterilization step.