US5656339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and arrangement for applying a fluid to a surface using a vibrating needle
Assignee: US Philips Corp
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Filing: 1995-06-20
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Granted: 1997-08-12
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Expires: 2015-06-20
Abstract
Abstract The invention relates to a method of applying a fluid (12) to a surface (13), the pressurised fluid being applied from a container (1) to the surface via a hollow needle (7). In order to preclude clogging of the needle the needle is subjected to a longitudinal vibration during the application of fluid. The invention also relates to an arrangement for carrying out the method, the arrangement comprising a vibration device (3), such as a piezoelectric transducer, which can be coupled to the needle (7) to set the needle into longitudinal vibration. The fluid may be, for example, a solder paste or an adhesive.
Inventors
- 👤 Wessel J. Wesseling
- 👤 Nicolaas J. A. Van Veen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:19
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0448; B; B05; B05C; B05C11/00; B05C11/10; B05C5/00; B05C5/02; B23; B23K; B23K3/00; B23K3/06; B23K3/0607
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
45 words
A method of applying a pressurized fluid to a surface, pressurized fluid being applied from a container to the surface through a hollow needle, wherein the needle is subjected to a vibration in the direction of its longitudinal axis during the application of the fluid.
Claim 2
Independent Claim
45 words
A method of applying a pressurized fluid to a surface, pressurized fluid being applied from a container to the surface through a hollow needle, wherein the needle is subjected to a vibration in the direction of its longitudinal axis during the application of the fluid.
Claim 3
Dependent Claim
44 words
A method as claimed in claim 1, wherein the needle is subjected to a vibration having a frequency between 1 and 100 Hz and durations of the needle movement towards the surface are longer than durations of the needle movement away from the surface.
Claim 4
Dependent Claim
35 words
A method as claimed in claim 2, in which the fluid is a solder paste, and the vibration has an amplitude of the same order of magnitude as solder globule grain sizes in the paste.
Claim 5
Dependent Claim
23 words
A method as claimed in claim 1, wherein the needle is subjected to a vibration having a frequency between 1 and 30 kHz.
Claim 6
Dependent Claim
21 words
A method as claimed in claim 1, wherein the fluid is subjected to a pulsating pressure concurrently with the needle vibration.
Claim 7
Dependent Claim
48 words
An arrangement for applying pressurized fluid to a surface comprising a hollow needle via which, in operation, the pressurized fluid is applied to the surface, wherein the arrangement comprises a vibration device coupled to the needle to make the needle vibrate in the direction of its longitudinal axis.
Claim 8
Dependent Claim
48 words
An arrangement for applying pressurized fluid to a surface comprising a hollow needle via which, in operation, the pressurized fluid is applied to the surface, wherein the arrangement comprises a vibration device coupled to the needle to make the needle vibrate in the direction of its longitudinal axis.
Claim 9
Dependent Claim
19 words
An arrangement as claimed in claim 6, wherein the vibration device comprises a piezoelectric transducer connected to the needle.
Claim 10
Dependent Claim
19 words
An arrangement as claimed in claim 7 wherein pressure means are provided for pressurizing the fluid in a container.
Claim 11
Dependent Claim
56 words
An arrangement as claimed in claim 7, wherein the piezoelectric transducer is driven by a voltage having a frequency of between 1 and 100 Hz, the amplitude of the voltage varying between two extreme values, the duration between the low value and the high value differing from the duration between the high value and low value.
Claim 12
Dependent Claim
19 words
An arrangement as claimed in claim 9 wherein pressure means are provided for pressurizing the fluid in a container.
Claim 13
Dependent Claim
15 words
An arrangement as claimed in claim 6, wherein the vibration device comprises a cam mechanism.
Claim 14
Dependent Claim
19 words
An arrangement as claimed in claim 11 wherein pressure means are provided for pressurizing the fluid in a container.
Claim 15
Dependent Claim
19 words
An arrangement as claimed in claim 6 wherein pressure means are provided for pressurizing the fluid in a container.
References Cited (Backward Citations)
US4828886A
Cited
DE3728054A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-11 | 2001-02-10 | 2001-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-11 | 2005-02-10 | 2005-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-11 | 2009-02-10 | 2009-08-12 | $7700.00 | Window Closed / Lapsed |