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:
Feb. 18, 2020
Filed:
Jun. 28, 2017
Deka Products Limited Partnership, Manchester, NH (US);
Dean Kamen, Bedford, NH (US);
Larry B. Gray, Merrimack, NH (US);
Jesse T. Bodwell, Manchester, NH (US);
John M. Kerwin, Manchester, NH (US);
Dirk A. van der Merwe, Canterbury, NH (US);
Stephen L. Fichera, Salem, NH (US);
Jonathan R. Thurber, Deerfield, NH (US);
Martin D. Desch, Newburyport, MA (US);
DEKA Products Limited Partnership, Manchester, NH (US);
Abstract
A syringe pump includes a lead screw, a motor, and a sliding block assembly. The lead screw has threads and the motor is coupled to the lead screw to rotate it. The half-nut housing has a half nut and a barrel cam. The half nut is disposed within the half-nut housing. The half nut has half-nut threads at an end adjacent to the lead screw void. The half nut engages or disengages with the threads of the lead screw. The half nut includes a half-nut cam-follower surface and a half nut slot. The barrel cam is disposed within the half-nut housing and engages with the half-nut cam-follower surface. The barrel cam includes a pin to fit within the half nut slot such that the barrel cam rotates between a first position and a second position to actuate the half nut between the engagement position and the disengagement position, respectively.