IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0200620
(2005-08-10)
|
등록번호 |
US-8690084
(2014-04-08)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
137 |
초록
▼
A fluid dispense tip includes a bevel at an opening to reduce the amount of surface tension, or “land”, at the opening. The bevel is formed by grinding in a longitudinal direction such that any tooling scars resulting from the grinding operation are likewise longitudinally oriented, further reducing
A fluid dispense tip includes a bevel at an opening to reduce the amount of surface tension, or “land”, at the opening. The bevel is formed by grinding in a longitudinal direction such that any tooling scars resulting from the grinding operation are likewise longitudinally oriented, further reducing the amount of surface tension in the tip, thereby leading to heightened dispensing accuracy. The tip may be machined from stock as a unitary piece, to increase its lifetime, and may be formed with a bore of a relatively large diameter that is tapered down to a smaller diameter near the tip opening, to allow for delivery of fluid through the tip body at a decreased pressure. The tip may optionally be formed with a Luer™-style fitting on the body, such that the tip is compatible with pumps that utilize such a fitting.
대표청구항
▼
1. A dispense tip comprising: a Luer™-type machined base for mounting the dispense tip to a dispensing device having a material pump that introduces a flow of material to the dispense tip during a dispensing operation, the base including a Luer™-type female coupling for mounting the dispense tip to
1. A dispense tip comprising: a Luer™-type machined base for mounting the dispense tip to a dispensing device having a material pump that introduces a flow of material to the dispense tip during a dispensing operation, the base including a Luer™-type female coupling for mounting the dispense tip to a male coupling of the material pump, the base further including a funnel having a funnel inlet at an input end of the base constructed and arranged to receive the flow of material from the material pump and a funnel outlet at an output end of the funnel, the funnel having a smooth tapered inner surface that continuously narrows in diameter in a direction from the funnel inlet to the funnel outlet;an elongated machined neck, wherein the base and the neck are formed along a longitudinal axis from a single common stock of steel;a bore machined in the base and neck, the bore centered along the longitudinal axis, wherein an input end of the bore communicates with the funnel outlet;an opening at an output end of the neck, the opening at the output end of the neck being at an outermost end of the dispense tip, the opening adjacent to, and in communication with, an output end of the bore such that a single fluid path is formed between the funnel inlet and the opening; wherein:the input end of the bore comprises an inner surface of a first inner diameter, the output end of the bore comprises an inner surface of a second inner diameter, and the opening is of the second inner diameter, the first inner diameter being greater than the second inner diameter; wherein:an inner taper is machined in the bore of the neck for transitioning the inner surface of the bore from the first inner diameter to the second inner diameter, the bore being unobstructed both within the first inner diameter and the second inner diameter between the input end of the bore and the opening; and wherein:a portion of an outer surface of the base has a constant diameter, the portion extending in a direction along the longitudinal axis, the portion of the outer surface of the base being positioned between the Luer™-type female coupling and the funnel. 2. The dispense tip of claim 1, wherein the Luer™-type female coupling is formed from the single common stock for mounting the dispense tip to the mating male coupling of the material pump. 3. The dispense tip of claim 1 further comprising a bevel formed on an outer surface of the neck at the output end of the neck. 4. The dispense tip of claim 3, wherein the bevel is ground substantially along the longitudinal axis of the neck such that any tooling marks resulting therefrom are substantially aligned with the longitudinal axis. 5. The dispense tip of claim 4, wherein the bevel is electropolished to substantially remove the tooling marks. 6. The dispense tip of claim 1 further comprising an outer taper along an outer surface of the neck such that an input end of the neck has a first outer diameter, and such that the output end of the neck has a second outer diameter, wherein the first outer diameter is greater than the second outer diameter, and wherein the outer taper transitions the outer surface of the neck from the first outer diameter to the second outer diameter. 7. The dispense tip of claim 6, wherein the outer taper is formed in a region of the neck that corresponds with the position of the inner taper. 8. The dispense tip of claim 1, wherein the inner taper is proximal to the output end of the bore. 9. The dispense tip of claim 1, wherein the inner taper is formed at an angle ranging between 20 degrees and 35 degrees, relative to the longitudinal axis. 10. A method of forming a dispense tip mountable to a dispensing device having a material pump that introduces a flow of material to the dispense tip during a dispensing operation, the method comprising: machining a Luer™-type base and a neck from a single common stock of steel along a longitudinal axis, wherein a bulk portion of stock is removed from the single common stock to form the neck, wherein the Luer™-type machined base is coupled to the dispensing device having the material pump, and wherein a portion of an outer surface of the base has a constant diameter, the portion extending in a direction along the longitudinal axis, the base including a Luer™-type female coupling for mounting the dispense tip to a male coupling of the material pump, the base further including a funnel having a funnel inlet that is constructed and arranged to receive the flow of material from the material pump and a funnel outlet at an output end of the funnel, the funnel having a smooth tapered inner surface that continuously narrows in diameter in a direction from the funnel inlet to the funnel outlet, the portion of the outer surface of the base being positioned between the Luer™-type female coupling and the funnel;machining a bore through the base and neck along a longitudinal axis of the base and the neck, the bore having an inner surface of a first inner diameter;forming an opening at an output end of the neck, the opening at the output end of the neck being at an outermost end of the dispense tip, the opening adjacent to, and in communication with, an output end of the bore, and having an inner surface of a second diameter, wherein the second diameter is less than the first inner diameter;forming an inner taper in the bore of the neck to transition the inner surface of the bore from the first inner diameter to the second inner diameter of the opening, wherein a single fluid path is formed between the funnel inlet and the opening of the neck, and wherein the bore is unobstructed within the first inner diameter and the second inner diameter between the input end of the bore and the opening of the neck. 11. The method of claim 10, wherein forming the dispense tip further comprises forming a bevel on an outer surface of the neck at the output end of the bore. 12. The method of claim 11, wherein forming the bevel comprises grinding the bevel substantially along the longitudinal axis of the neck such that any tooling marks resulting therefrom are substantially aligned with the longitudinal axis. 13. The method of claim 12, wherein forming the bevel further comprises electropolishing the bevel to substantially remove the tooling marks. 14. The method of claim 10 further comprising forming an outer taper along an outer surface of the neck such that an input end of the neck in proximity to the base has a first outer diameter, and such that the output end of the neck has a second outer diameter, wherein the first outer diameter is greater than the second outer diameter, and wherein the outer taper transitions the outer surface of the neck from the first outer diameter to the second outer diameter. 15. The dispense tip of claim 1, wherein the single common stock of steel comprises stainless steel. 16. The dispense tip of claim 10, wherein the single common stock of steel comprises stainless steel. 17. The dispense tip of claim 10, wherein the single common stock of steel comprises stainless steel. 18. The method of claim 10, wherein the single common stock of steel comprises stainless steel.
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