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Snap-on vernier syringe

  • US 4,710,179 A
  • Filed: 10/27/1986
  • Issued: 12/01/1987
  • Est. Priority Date: 10/27/1986
  • Status: Expired due to Fees
First Claim
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1. A syringe assembly comprising:

  • a cylinder from which a volume of material can be dispensed;

    piston means to be inserted in and moveable through said cylinder for expulsing material therefrom; and

    collar means having a hole for receiving said piston means therethrough, said collar means being removably connected to said cylinder to support and align said piston means for movement through said cylinder, said collar means also including;

    at least one exterior face;

    an interior core spaced from said face;

    an access opening formed in said face through which an end of said cylinder may be inserted, said collar means being removably connected to said cylinder when said cylinder is inserted through said access opening and rotated through the space between said exterior face and said interior core;

    a catch member;

    a seat formed in said interior core into which said catch member may be moved; and

    position control means communicating with said catch member and extending through said collar means to a manually accessible position thereof at which to control the movement of said catch member relative to said seat, said position control means being operable to move said catch member either into said seat in said core to permit the rotation of said cylinder end and the connection or disconnection of said collar means to or from said cylinder or out of said seat and into the space between said exterior face said interior core to block the rotation of said cylinder end and prevent the disconnection of said collar means from said cylinder.

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