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
Etch resistant clearcoat
Electrode for a plasma torch
(4936
Encoding method and encoding device, decoding method and decoding device and transcoding method and transcoder for multi-object audio signals
Methods for measuring media performance associated with adjacent track interference
Antibodies to Clostridium difficile toxins
Unified feedback frame for supporting a plurality of feedback modes and a multiple-input multiple-output (MIMO) communication system using the unified feedback frame
  Randomly Featured Patents
Pool floor
Antiparasitic pyrrolobenzoxazine compounds
Fluidized bed reactor with back-mixing for dehydrogenation of light paraffins
Modular coaxial cable connector
Optical disk apparatus and track access method therefor
Radio network and method of establishing time synchronization among a plurality of buses
Process for polymerizing propylene using a silica-supported catalyst
Apparatus and method to measure platelet contractility
Nickel electrode and alkaline battery using the same
Magnetic resonance imaging systems