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US3648769A Expired / Lapsed US ⏱️ 0.0 years remaining

Well cleaner

Assignee: Individual
•
Filing: 1970-09-04
•
Granted: 1972-03-14
•
Expires: 1990-09-04
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Abstract

Abstract A device for cleaning and/or disinfecting commercial wells consisting of a tubular housing smaller in diameter than the well casing and which is lowered to a location below the liquid level in the well. A resonant diaphragm partition separates the housing into an upper closed chamber and a lower open chamber. Centrally mounted on the upper portion of the diaphragm is a rotational mass which revolves at constant speed and the mass-speed relationship develops sinusoidal vibrations in the low-sonic range and substantially vertical to its diaphragm mount location. The sinusoidal force excites the diaphragm into one of its modes of natural frequency in the form of bending wave motion in the diaphragm. The force, sinusoidal in nature, thus released also excites the housing of the upper and lower chambers and longitudinal bending waves are in turn continuously developed and transmitted through the material of the housing and in a direction through the lower open end portion of the cylindrical housing. The longitudinal bending wave vibrations in the material of the cylindrical housing in turn cause compressional acoustic waves to be transmitted through the surrounding water medium at speeds approximating 4,800 feet per second from both the inner and outer surfaces of the lower open end cylindrical shell, and from the outer surface of the upper closed cylindrical shell. The direction of the released compressional sound waves is perpendicular to surfaces of the cylindrical shell and the waves are multidirectional in nature.

Inventors

  • 👤 Harold T Sawyer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 23:12
CPC Classifications
E; E21; E21B; E21B37/00; B; B08; B08B; B08B3/00; B08B3/04; B08B3/10; B08B3/12

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 156 words
A well cleaner for wells having a casing extending into the earth for collection of fluid prior to withdrawal, said cleaner comprising: a housing, a transverse partition dividing said housing into an upper chamber and the lower chamber, a mass in said upper chamber cyclically rotating on a substantially transverse axis, said mass when in a condition of rotation being a source of sinusoidal wave energy, and a source of power for said cyclically rotating mass, a bracket located substantially centrally on said partition and connected to said source of sinusoidal wave energy, said partition being of relatively stiff resilient material anchored at its perimeter to said housing whereby sinusoidal motion conveyed to the partition by said bracket is passed to the housing and vibration is set up thereby in said housing when at a location within said fluid whereby the fluid passes said vibration to the wall of said casing to loosen material lodged thereon.
Claim 2
Dependent Claim 156 words
A well cleaner for wells having a casing extending into the earth for collection of fluid prior to withdrawal, said cleaner comprising: a housing, a transverse partition dividing said housing into an upper chamber and the lower chamber, a mass in said upper chamber cyclically rotating on a substantially transverse axis, said mass when in a condition of rotation being a source of sinusoidal wave energy, and a source of power for said cyclically rotating mass, a bracket located substantially centrally on said partition and connected to said source of sinusoidal wave energy, said partition being of relatively stiff resilient material anchored at its perimeter to said housing whereby sinusoidal motion conveyed to the partition by said bracket is passed to the housing and vibration is set up thereby in said housing when at a location within said fluid whereby the fluid passes said vibration to the wall of said casing to loosen material lodged thereon.
Claim 3
Dependent Claim 45 words
A well cleaner as in claim 1, wherein there is a flexible power line extending from ground surface into the well to said well cleaner, said power line being adjustable up and down to raise and lower the position of said housing in the well.
Claim 4
Dependent Claim 63 words
A well cleaner as in claim 1, wherein a motor having a body rotating about a substantially transverse axis provides said mass, an end of said body in alignment with said axis having a vibration isolating mounting on said housing, a rotating shaft for said motor having an end opposite said one end of the body having an eccentric mounting on said bracket.
Claim 5
Dependent Claim 73 words
A well cleaner as in claim 1, wherein there is a tank for well treating material mounted in said lower chamber at a location clear of said housing, and material distributing means connected to said tank receptive of quantities of said material, and outlet means included in said material distributing means whereby said material is dispensed into the fluid in the well in response to action by said source of sinusoidal wave energy.
Claim 6
Dependent Claim 23 words
A well cleaner as in claim 1, wherein said upper chamber is air tight to provide buoyancy for said cleaner in the fluid.
Claim 7
Dependent Claim 25 words
A well cleaner as in claim 5, wherein the housing around said lower chamber is perforated to provide passage through said housing for said fluid.

References Cited (Backward Citations)

US2871943A Cited
US2816612A Cited
US2918126A Cited
US3101499A Cited
US3209834A Cited
US3194326A Cited
US3402611A Cited
US3527300A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-03-14 1975-09-13 1976-03-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-03-14 1979-09-13 1980-03-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-03-14 1983-09-13 1984-03-14 $7700.00 Window Closed / Lapsed

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