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US3844738A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and device for de-aerating greases

Assignee: US Philips Corp
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Filing: 1973-12-03
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Granted: 1974-10-29
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Expires: 1993-12-03
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Abstract

Abstract A method of and a device for de-aerating greases, in which the grease to be de-aerated is fed to the inner side of a cylindrical drum which rotates at a high speed. The grease feed rate is continuous and so high that the grease flows along the inner side of the drum in a thin layer, meanwhile discharging air present therein. The thin layer is collected again at some distance from the grease inlet in a stationary duct which extends outside the drum.

Inventors

  • 👤 J Vandersteen
  • 👤 J Reinhoudt
  • 👤 G Remmers

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 20:43
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0021; B01D19/0026; B04; B04B; B04B1/00; B04B1/02; B04B1/04; B04B5/00; B04B5/08; Y; Y10; Y10S; Y10S494/00; Y10S494/90; Y10S494/901

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 77 words
A METHOD OF DE-AERATING GREASES, COMPRISING FEEDING THE GREASE TO BE DE-AERATED TO THE INNER SIDE OF A CYLINDRICAL DRUM WHICH ROTATES AT A VERY HIGH SPEED, THE GREASE FEED RATE BEING CONTINUOUS AND SO HIGH THAT THE GREASE FLOWS ALONG THE INNER SIDE OF THE DRUM IN A THIN LAYER AND MEANWHILE DISCHARGES AIR PRESENT THEREIN, COLLECTING THE THIN LAYER AT SOME DISTANCE FROM THE GREASE INLET IN A STATIONARY DUCT WHICH EXTENDS OUTSIDE THE DRUM.
Claim 2
Independent Claim 77 words
A METHOD OF DE-AERATING GREASES, COMPRISING FEEDING THE GREASE TO BE DE-AERATED TO THE INNER SIDE OF A CYLINDRICAL DRUM WHICH ROTATES AT A VERY HIGH SPEED, THE GREASE FEED RATE BEING CONTINUOUS AND SO HIGH THAT THE GREASE FLOWS ALONG THE INNER SIDE OF THE DRUM IN A THIN LAYER AND MEANWHILE DISCHARGES AIR PRESENT THEREIN, COLLECTING THE THIN LAYER AT SOME DISTANCE FROM THE GREASE INLET IN A STATIONARY DUCT WHICH EXTENDS OUTSIDE THE DRUM.
Claim 3
Independent Claim 168 words
A device for de-aerating greases comprising an approximately horizontally arranged cylindrical drum which is rotatable on a shaft and which is closed on one end face, a rim on the other end of the drum having a face which extends transverse to the shaft, a disc having an outer diameter which is only slightly smaller than the inner diameter of the drum being arranged inside the drum, the said disc being provided with a shaft which is passed out of the drum via the open side where it is clamped, a number of ducts in said disc which extend from the outer circumference inwards where they open into a further duct which extendS to the outside through the said shaft, a further stationary rim being situated opposite to the said face of the rim of the drum, the said further stationary rim having an annular recess which faces this face, the said recess communicating, through one or more ducts, with an inlet for the grease to be de-aerated.
Claim 4
Independent Claim 168 words
A device for de-aerating greases comprising an approximately horizontally arranged cylindrical drum which is rotatable on a shaft and which is closed on one end face, a rim on the other end of the drum having a face which extends transverse to the shaft, a disc having an outer diameter which is only slightly smaller than the inner diameter of the drum being arranged inside the drum, the said disc being provided with a shaft which is passed out of the drum via the open side where it is clamped, a number of ducts in said disc which extend from the outer circumference inwards where they open into a further duct which extendS to the outside through the said shaft, a further stationary rim being situated opposite to the said face of the rim of the drum, the said further stationary rim having an annular recess which faces this face, the said recess communicating, through one or more ducts, with an inlet for the grease to be de-aerated.
Claim 5
Independent Claim 128 words
A device for de-aerating greases comprising a rotatably mounted drum having its longitudinal axis horizontally arranged and having one end thereof closed, a rim on the other end of said drum having a face extend transverse to said longitudinal axis, means communicating with the interior of said drum for supplying greases to be de-aerated on to said face of said rim, a body carried within said drum having an outer diametrical dimension only slightly smaller than the inner diametrical dimension of said drum and having a plurality of ducts extending from the outer circumference of said body radially inward for collecting the greases supplied to said drum, and means communicating with said ducts for collecting said de-aerated greases and passing said greases to the outside of said drum.
Claim 6
Independent Claim 128 words
A device for de-aerating greases comprising a rotatably mounted drum having its longitudinal axis horizontally arranged and having one end thereof closed, a rim on the other end of said drum having a face extend transverse to said longitudinal axis, means communicating with the interior of said drum for supplying greases to be de-aerated on to said face of said rim, a body carried within said drum having an outer diametrical dimension only slightly smaller than the inner diametrical dimension of said drum and having a plurality of ducts extending from the outer circumference of said body radially inward for collecting the greases supplied to said drum, and means communicating with said ducts for collecting said de-aerated greases and passing said greases to the outside of said drum.
Claim 7
Dependent Claim 49 words
The device according to claim 3 wherein said drum is carried on a rotatable shaft, and wherein said body is a disc carried on a shaft extending out of the open side of said drum, and a further duct extending through said shaft communicating with said plurality of ducts.

References Cited (Backward Citations)

US2648496A Cited
US3213592A Cited
US3396088A Cited
US3559879A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-10-28 1978-04-29 1978-10-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-28 1982-04-29 1982-10-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-28 1986-04-29 1986-10-29 $7700.00 Window Closed / Lapsed

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