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
Superconducting magnetizer
(4934
Area efficient through-hole connections
Sparse data compression
Analysis of stress impact on transistor performance
Local call local switching at handover
Paper product with surface pattern
  Randomly Featured Patents
Lamp casing
Dispensing device with self-cleaning nozzle
Polymer, resist composition and patterning process
Pneumatic radial tire for passenger car
LED lamp
Golf tee
Method and apparatus for minimizing accumulation of polymer on process equipment, especially safety devices
Controlled sample orientation and rotation in an acoustic levitator
Semiconductor chip package and method for fabricating the same
Surface cleaner