Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Safety syringe










Image Number 3 for United States Patent #7799002.

An improved safety hypodermic syringe includes a reciprocal tubular needle sheath disposed on the exterior of the syringe body, a latch mechanism engaging the syringe body and the sheath to latch the sheath in a needle-covering position after delivering contents from the syringe body, and a spring engaging the syringe body and the sheath and expandable to move the sheath to cover the needle point, where the spring is a non-uniform helical spring having multiple 360.degree. turns each turn uniformly spaced from adjacent turns, each 360.degree. turn comprising first and second alternating angled portions, the first of the alternating angled portions being at a first angle to a plane perpendicular to an axis through the center of the helical spring and the second angled portions being at a second lesser angle to the plane perpendicular to the axis.








 
 
  Recently Added Patents
Polynucleotide capture materials, and methods of using same
Current collector for lead acid battery
Starch networks as absorbent or superabsorbent materials and their preparation by extrusion
Apparatus and method for controlling semiconductor die warpage
Method of using N-thio compounds for oligonucleotide synthesis
Process for producing a plasma protein-containing medicament with reduced concentration of citrate and metals
Electronic currency, electronic wallet therefor and electronic payment systems employing them
  Randomly Featured Patents
Cup sleeve element
Passive hemostatic sheath valve
Golf accessory caddy
Quasi-azeotropic mixture based on 1,1,1,3,3-pentafluorobutane, methylene chloride and methanol for the treatment of solid surfaces
Side frame of a tool wagon
Method and system for message management
Release apparatus for a camera
Nasal continuous positive airway pressure apparatus and method
Inhibition of hydrogen peroxide decomposing enzymes during bleaching of cellulose fibers
Compounds with medicinal effects due to interaction with the glucocorticoid receptor