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US3759014A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for dislodging accumulated dust from dust collecting elements

Assignee: Standard Oil Co
•
Filing: 1971-05-12
•
Granted: 1973-09-18
•
Expires: 1991-05-12
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Abstract

Abstract An electrostatic precipitator for industrial dusts has dustcollecting elements mounted for transverse vibration and vibrating means that insures maximum effectiveness in dislodging dust accumulations, without the destructive longitudinal rapping techniques customarily employed by the art. The dust-collecting elements are hinge mounted, either individually on respective axes or collectively on an axis in common, with the hinge axis or axes extending in general parallelism with the transverse vibratory motion, i.e. with the respective waves that travel along the lengths of the elements, so no force moments are transmitted to the supporting structure. Vibratory motion is applied by any suitable means, such as vibrators of various conventional types, through a moment arm located at or adjacent to the hinge mounting. The vibration is preferably controlled so as to match the natural frequency of the dust-collecting elements, and such elements are preferably selected on the basis of possessing easily induced natural frequencies. The entire dust-collecting structure is advantageously resiliently mounted with respect to the enclosing housing and its supporting framework.

Inventors

  • 👤 Dyken H Van
  • 👤 D Brandt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 06:51
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/76

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 34 words
Dust collecting apparatus as recited in claim 1, wherein the means for applying vibratory movement is a pneumatic vibrator having a piston and a cylinder, the latter being rigidly secured to the moment arm.
Claim 2
Dependent Claim 39 words
Dust collecting apparatus as recited in claim 1, wherein the means for applying vibratory movement to the moment arm is constructed and arranged to apply vibratory movement that substantially matches a natural frequency of vibration of the dust-collecting element.
Claim 3
Dependent Claim 27 words
Dust collecting apparatus as recited in claim 1, wherein the dust collecting element is a structural steel shape whose width extends substantially parallel with the hinge axis.
Claim 4
Dependent Claim 21 words
Dust collecting apparatus as recited in claim 1, wherein a plurality of the dust collecting elements are rigidly interconnected in common.
Claim 5
Dependent Claim 26 words
Dust collecting apparatus as recited in claim 5, wherein the plurality of dust collecting elements are arranged side-by-side in series to form a dust collecting panel.
Claim 6
Dependent Claim 77 words
Dust collecting apparatus as recited in claim 5, wherein the plurality of dust collecting elements are spaced relative to each other and are rigidly interconnected by a substantially rectangular structure; the hinge suspension means has one member extending along and secured to said structure intermediate its expanse, so that said structure provides a moment arm with respect to the hinge axis, and has another member pivotally related to said one member and supported by the supporting means.
Claim 7
Dependent Claim 20 words
Dust collecting apparatus as recited in claim 5, including means resiliently connecting the rigidly interconnected elements with the supporting means.
Claim 8
Dependent Claim 43 words
Dust collecting apparatus as recited in claim 5, wherein there is a plurality of side-by-side series of the dust collecting elements arranged one after the other in file; and means resiliently connecting the said plurality of series with the supporting means in common.
Claim 9
Dependent Claim 50 words
Dust collecting apparatus as recited in claim 6, wherein the series of dust collecting elements are spaced from each other and are rigidly interconnected by one member of the hinge suspension means, another member of said means being pivotally related to said one member and supported by the supporting means.
Claim 10
Dependent Claim 23 words
Dust collecting apparatus as recited in claim 10, wherein the moment arm extends rigidly from adjacent the one member of the hinge suspension.
Claim 11
Independent Claim 78 words
A method of dislodging accumulated dust from an elongate dust-collecting element, comprising applying vibratory motion to a moment arm attached to the upper end portion of the dust-collecting element, longitudinally of said element and at a location offset laterally therefrom, while freely suspending said element from a hinge axis, said moment arm extending transversely of said hinge axis so as to induce transverse waves that travel downwardly along the length of said element and dislodge said accumulated dust.
Claim 12
Dependent Claim 22 words
A method in accordance with claim 12, wherein the vibratory movement substantially matches a natural frequency of vibration of the dust-collecting element.

References Cited (Backward Citations)

CA458872A Cited
CA656468A Cited
US2893511A Cited
US3201923A Cited
GB957273A Cited
US3212643A Cited
US3605915A Cited
US3587213A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-17 1977-03-19 1977-09-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-17 1981-03-19 1981-09-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-17 1985-03-19 1985-09-18 $7700.00 Window Closed / Lapsed

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