US4990244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recycling the components of used single use human waste collecting and/or absorbing products
Assignee: Individual
•
Filing: 1989-02-02
•
Granted: 1991-02-05
•
Expires: 2009-02-02
Abstract
Abstract Processes and apparatuses are provided for hygienically returning for reuse in subsequent manufacturing processes, the original liquid absorbing materials and moisture sealing materials of used single use collecting and/or absorbing products, previously worn by infants or adults to absorb urine and/or to collect feces. These human wastes are washed out from single use diapers, one use adult diapers, and other like purpose products, and directed into municipal sewer systems, or other systems ending in the treatment of sewage. These used single use collecting and/or absorbing products are heated to reach temperatures high enough to liquidize adhesives originally used, where necessary, to hold together the original liquid absorbing materials and moisture sealing materials, and then the liquidized adhesives are drained clear of these materials. Preferably, this removal of adhesives is completed during the washing of these one use products. Thereafter, the liquid absorbing materials and moisture sealing materials are separated from one another, for recycling to be used again in the manufacture of other products. Previously most of these used single use collecting and or absorbing products were tossed into the waste collection operation of municipalities, which generally ended in the filling of landfills. The human wastes, so deposited in landfills, via the annual use of eighteen billion single use diapers and other like single use products, threaten, or have affected underground water supplies and threaten, or have created other health problems.
Inventors
- 👤 Gene F. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:50
CPC Classifications
B; B09; B09B; B09B3/00; B09B3/40; B03; B03B; B03B9/00; B03B9/06; B03B9/061; B09B3/30; D; D21; D21B; D21B1/00; D21B1/02; D21B1/026; B09B2101/00; B09B2101/65; B09B2101/67; Y; Y10; Y10S; Y10S241/00; Y10S241/38
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
234 words
A process for hygienically returning for reuse, in subsequent manufacturing processes, substantially most of the original liquid absorbing materials and moisture sealing materials originally secured together by adhesives of used one use collecting and absorbing products, previously manufactured and then used to collect human waste, which includes urine and feces, comprising: (a) gathering the used collecting and absorbing products containing human waste; (b) arranging the used collecting and absorbing products containing human waste, into overall groups not exceeding a designated preselected weight; (c) loading a selected overall group of used collecting and absorbing products containing human waste, into machinery, which utilizes water for soaking and washing the selected overall group, to remove the human waste and to divert the human waste, via water leaving the machinery, into municipal sewers for subsequent municipal sewer treatment; (d) operating this machinery for soaking and washing to remove the human waste from the selected overall group of used collecting and absorbing products; (e) heating the washed selected overall group of used collecting and absorbing products to a temperature high enough to liquidize the adhesives used during the original manufacturing process to bond together the original liquid absorbing materials to the original moisture sealing materials; (f) withdrawing the liquidized adhesives from the original liquid absorbing materials and the original moisture sealing materials; and (g) separating the original liquid absorbing materials and the original moisture sealing materials, from one another.
Claim 2
Dependent Claim
234 words
A process for hygienically returning for reuse, in subsequent manufacturing processes, substantially most of the original liquid absorbing materials and moisture sealing materials originally secured together by adhesives of used one use collecting and absorbing products, previously manufactured and then used to collect human waste, which includes urine and feces, comprising: (a) gathering the used collecting and absorbing products containing human waste; (b) arranging the used collecting and absorbing products containing human waste, into overall groups not exceeding a designated preselected weight; (c) loading a selected overall group of used collecting and absorbing products containing human waste, into machinery, which utilizes water for soaking and washing the selected overall group, to remove the human waste and to divert the human waste, via water leaving the machinery, into municipal sewers for subsequent municipal sewer treatment; (d) operating this machinery for soaking and washing to remove the human waste from the selected overall group of used collecting and absorbing products; (e) heating the washed selected overall group of used collecting and absorbing products to a temperature high enough to liquidize the adhesives used during the original manufacturing process to bond together the original liquid absorbing materials to the original moisture sealing materials; (f) withdrawing the liquidized adhesives from the original liquid absorbing materials and the original moisture sealing materials; and (g) separating the original liquid absorbing materials and the original moisture sealing materials, from one another.
Claim 3
Dependent Claim
51 words
A process, as claimed in claim 1, wherein the heating to a temperature high enough to liquidize the adhesives is undertaken by heating the water to this high enough temperature, which is circulated in the machinery, which is operated to remove the human waste from the used collecting and absorbing products.
Claim 4
Dependent Claim
31 words
A process, as claimed in claim 1, wherein the heating to a temperature high enough to liquidize the adhesives is undertaken by heating directly the washed used collecting and absorbing products.
Claim 5
Dependent Claim
25 words
A process, as claimed in claim 3, wherein the heating directly of the washed used collecting and absorbing products is heating via convected heating air.
Claim 6
Dependent Claim
26 words
A process, as claimed in claim 3, wherein the heating directly of the washed used collecting and absorbing products is heating by the radiation of heat.
Claim 7
Dependent Claim
24 words
A process, as claimed in claim 4, wherein the heating, via convected heating air, is undertaken by burning fuels to heat the convected air.
Claim 8
Dependent Claim
25 words
A process, as claimed in claim 4, wherein the heating, via convected heating air, is undertaken by operating electric heaters to heat the convected air.
Claim 9
Dependent Claim
24 words
A process, as claimed in claim 3, wherein the heating directly of the washed used collecting and absorbing products is heating by using steam.
Claim 10
Dependent Claim
25 words
A process, as claimed in claim 3, wherein the heating directly of the washed used collecting and absorbing products is heating by using hot water.
Claim 11
Dependent Claim
34 words
A process, as claimed in claim 1, wherein the separating of the original liquid absorbing materials and the original moisture sealing materials from one another, is undertaken by the operation of an agitated conveyor.
Claim 12
Dependent Claim
106 words
A process, as claimed in claim 1, wherein the separating of the original liquid absorbing materials and the original moisture sealing materials, from one another, is undertaken by the operation of relatively positioned conveyors having a top agitated conveyor utilizing a mesh conveyor belt to receive both the moisture sealing materials and liquid absorbing materials and water contained therein, and a lower conveyor, utilizing a porous conveyor belt to receive the liquid absorbing materials and water contained therein that is passing down through the mesh conveyor belt, and then water, formerly contained int he liquid absorbing materials, passes down through the porous conveyor belt for collection.
Claim 13
Dependent Claim
34 words
A process, as claimed in claim 1, wherein the separating of the original liquid absorbing materials and the original moisture sealing materials, from one another is undertaken, by the operation of an oscillating sieve.
Claim 14
Dependent Claim
61 words
A process, as claimed in claim 1, wherein the loading of a selected overall group of used collecting and absorbing products, containing human waste, into machinery which utilizes water for soaking and washing is undertaken by providing and loading a hopper which in turn is emptied by lowering these used collecting and absorbing products into the machinery for soaking and washing.
Claim 15
Dependent Claim
71 words
A process, as claimed in claim 13, wherein, following the operating of the machinery to remove the human waste, and following the heating of the used collecting and absorbing products, and following the withdrawing of the liquidized adhesives, the separating of the original liquid absorbing materials and the original moisture sealing materials from one another, by using forces created by the operation of machinery, involves the operation of an agitated conveyor.
Claim 16
Dependent Claim
76 words
A process, as claimed in claim 14, wherein the operation of the machinery involves not only the operation of the agitated conveyor, having a mesh conveyor belt to receive the moisture sealing materials, but also the operation of a lower conveyor, having a porous conveyor belt to receive the liquid absorbing materials passing down through the mesh conveyor belt, and water originating in the liquid absorbing materials passes down through the porous conveyor belt for collection.
Claim 17
Dependent Claim
71 words
A process, as claimed in claim 13, wherein following the operating of the machinery to remove the human waste, and following the heating of the used collecting and absorbing products, and following the withdrawing of the liquidized adhesives, the separating of the original liquid absorbing materials and the original moisture sealing materials from one another, by using forces created by the operation of machinery, involves the operation of an oscillating sieve.
Claim 18
Dependent Claim
19 words
A process, as claimed in claim 16, wherein additional like operating oscillating sieves are arranged one above the other.
Claim 19
Dependent Claim
36 words
A process, as claimed in claim 16, wherein additional like operating oscillating sieves are arranged in succession, and undersized materials passing down through the oscillating sieve are led to the subsequent oscillating sieve via a conveyor.
Claim 20
Dependent Claim
240 words
A process, utilized to keep used disposable human waste collecting products originally secured together by adhesives, from being put into a toss out, collecting, pick up transport, and landfill dumping, sequential waste disposal routine, wherein substantially most of the original liquid absorbing materials, and the original moisture sealing materials are hygienically processed for return to be reused in subsequent manufacturing processes, comprising: (a) gathering the otherwise to be tossed out, used disposable human waste collecting products, containing human waste; (b) loading the gathered used disposable human waste collecting products, containing human waste, into machinery, utilizing water for washing, to remove the human waste via draining the water and the human waste into municipal sewers for subsequent municipal sewer treatment; (c) operating this machinery to remove the human waste from the used disposable human waste collecting products; (d) heating the used disposable human waste collecting products, that are washed, to a temperature high enough to liquidize the adhesives used during the original manufacturing process to bond together the original liquid absorbing materials to the original moisture sealing materials; (e) withdrawing the liquidized adhesives from the original liquid absorbing materials and the original moisture sealing materials; (f) separating the original liquid absorbing materials and the original moisture sealing materials from one another; and (g) collecting in separate places the respective recovered original liquid absorbing materials and the original moisture sealing materials, in readiness for their recycling into other products to be manufactured.
Claim 21
Dependent Claim
240 words
A process, utilized to keep used disposable human waste collecting products originally secured together by adhesives, from being put into a toss out, collecting, pick up transport, and landfill dumping, sequential waste disposal routine, wherein substantially most of the original liquid absorbing materials, and the original moisture sealing materials are hygienically processed for return to be reused in subsequent manufacturing processes, comprising: (a) gathering the otherwise to be tossed out, used disposable human waste collecting products, containing human waste; (b) loading the gathered used disposable human waste collecting products, containing human waste, into machinery, utilizing water for washing, to remove the human waste via draining the water and the human waste into municipal sewers for subsequent municipal sewer treatment; (c) operating this machinery to remove the human waste from the used disposable human waste collecting products; (d) heating the used disposable human waste collecting products, that are washed, to a temperature high enough to liquidize the adhesives used during the original manufacturing process to bond together the original liquid absorbing materials to the original moisture sealing materials; (e) withdrawing the liquidized adhesives from the original liquid absorbing materials and the original moisture sealing materials; (f) separating the original liquid absorbing materials and the original moisture sealing materials from one another; and (g) collecting in separate places the respective recovered original liquid absorbing materials and the original moisture sealing materials, in readiness for their recycling into other products to be manufactured.
Claim 22
Dependent Claim
179 words
Apparatus, for hygienically treating used collecting and absorbing products, previously manufactured and secured together by adhesives, and then worn by infants or adults to absorb urine and to collect feces, and then for separating the original liquid absorbing materials and moisture sealing materials, previously adhered together in these used collecting and absorbing products, comprising: (a) a washing machine filled with washing water and connected to a municipal sewer to receive and to wash the collecting and absorbing products, thereby removing the urine and feces via the draining of the washing water and the urine and feces into a municipal sewer for further processing of the urine and feces; (b) a heating means to heat the collecting and absorbing products, to liquidize the adhesives used during the original manufacturing process to bond together the original liquid absorbing materials to the original moisture sealing materials, so the liquidized adhesives will drain clear of these materials; and (c) a separating machine to collect the original moisture sealing materials at one locale and to collect the original liquid absorbing materials at another locale.
Claim 23
Dependent Claim
179 words
Apparatus, for hygienically treating used collecting and absorbing products, previously manufactured and secured together by adhesives, and then worn by infants or adults to absorb urine and to collect feces, and then for separating the original liquid absorbing materials and moisture sealing materials, previously adhered together in these used collecting and absorbing products, comprising: (a) a washing machine filled with washing water and connected to a municipal sewer to receive and to wash the collecting and absorbing products, thereby removing the urine and feces via the draining of the washing water and the urine and feces into a municipal sewer for further processing of the urine and feces; (b) a heating means to heat the collecting and absorbing products, to liquidize the adhesives used during the original manufacturing process to bond together the original liquid absorbing materials to the original moisture sealing materials, so the liquidized adhesives will drain clear of these materials; and (c) a separating machine to collect the original moisture sealing materials at one locale and to collect the original liquid absorbing materials at another locale.
Claim 24
Dependent Claim
30 words
Apparatus, as claimed in claim 20, comprising, in addition, a hopper for collecting a selected quantity of used collecting and absorbing products, before they are received within a washing machine.
Claim 25
Dependent Claim
29 words
Apparatus, as claimed in claim 20, wherein the separating machine is an agitated conveyor having a fine mesh belt to receive the washed and heated collecting and absorbing product.
Claim 26
Dependent Claim
46 words
Apparatus, as claimed in claim 22, having, in addition, a lower conveyor, utilizing a porous conveyor belt, to receive the liquid absorbing materials passing down through the fine mesh belt of the agitated conveyor, and separating water passes down through the porous conveyor belt for collection.
Claim 27
Dependent Claim
15 words
Apparatus, as claimed in claim 20, wherein the separating machine has an oscillating sieve component.
Claim 28
Dependent Claim
18 words
Apparatus, as claimed in claim 24, wherein additional like oscillating sieve components are arranged one above the other.
Claim 29
Dependent Claim
43 words
Apparatus, as claimed in claim 24, wherein additional like oscillating sieve components are arranged in succession, and undersized materials passing through the sieve components are carried to the subsequent oscillating sieve component via a conveyor, there being a conveyor below each sieve component.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |