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. 02, 1976
Filed:
Oct. 11, 1974
Ingemar H Lundquist, Oakland, CA (US);
Leif J Sundblom, Castro Valley, CA (US);
Valleylab, Inc., Boulder, CO (US);
Abstract
The present invention relates to a timing device for an intravenous feeding pump, whereby the pump can be set to operate at its regular rate for a predetermined period (preferably up to about 4 hours) and thereafter at a reduced rate just sufficient to keep the needle open. The apparatus comprises a gear train driven by the main drive shaft of the intravenous feeding pump actuator, which drives a setting dial at a considerably reduced speed back to a '0' position. The setting dial is clutched to a final gear of the gear train through a spring slip clutch, so that the setting dial can be set to a desired position without driving the gear train or the gear train continue to drive even though the setting dial is latched in its 0 position. When the control knob is in the active position, means is provided when the setting dial returns to its 0 position to actuate an alarm device, such as a light, or a buzzer, or both, and to switch the power circuit of the drive motor into a reduced motor speed for a 'keep-open' rate of feed to the needle.