Patent US3927985A successfully refreshed from Google Patents.
US3927985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for preparation of earth improving substances from organic waste
Assignee: Toa-Throne AB
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Filing: 1974-07-29
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Granted: 1975-12-23
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Expires: 1994-07-29
Abstract
Abstract A receptacle for the production of earth improving substances from organic waste comprising an enclosure divided into two sections, the upper section being detachably mounted on the lower section and serving the purpose of a lid for the last mentioned section, the lower section in addition comprising an inclining bottom portion and a horizontal or nearly horizontal bottom portion, and further supply ducts for air, said ducts communicating with the interior of said sections via openings and air exhaust ducts, characterized by at least part of the bottom having the form of a staircase with oblique steps and holes or slits arranged between adjacent steps, said steps being so arranged as to prevent waste material from falling down into said air supply channel.
Inventors
- 👤 Roy Lennart Hyttinge
- 👤 Lars Olov Widvall
- 👤 Anders Erik Ingvar Hook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:11
CPC Classifications
C; C05; C05F; C05F3/00; C05F3/04; C05F17/00; C05F17/90; C05F17/907; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y02W; Y02W30/00; Y02W30/40; Y10; Y10S; Y10S4/00; Y10S4/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
179 words
RECEPTACLE FOR THE PRODUCTION OF EARTH IMPROVING SUBSTANCE FROM ORGANIC WASTE, COMPRISING AN INVERTED TOP SECTION AND A BOTTOM SECTION, SAID SECTIONS HAVING CONGRUENT TRAPEZOIDAL VERTICAL CROSS SECTIONS AND THE TOP SECTION BEING TURNED 180* IN THE HORIZONTAL PLANE RELATIVE TO THE BOTTOM SECTION AND DETACHABLY MOUNTED UPON THE BOTTOM SECTION TO FORM A LID THEREFOR, THE DIMENSIONS OF ONE OF SAID SECTIONS BEING SMALLER THAN THOSE OF THE OTHER SECTION IN ORDER TO HOUSE THE MAJOR PART OF SAID ONE SECTION WITHIN SAID OTHER TRAY FOR TRANSPORTATION WHEN INVERTED AND TURNED 180*, AN INNER BOTTOM WITHIN SAID BOTTOM SECTION HAVING AN INCLINED PORTION AND DEFINING AN AIR SPACE THEREBELOW, AT LEAST PART OF SAID INCLINED PORTION BEING OF STAIRCASE SHAPE WITH OBLIQUE STEPS FORMED BY PLATES WITH SLOTS AND SPACERS BETWEEN ADJACENT STEPS, WHEREBY ADJACENT PLATES PARTLY OVERLAP EACH OTHER TO PREVENT WASTE FROM PENETRATING SAID SLOTS, AIR INLET MEAND COMMUNICATING WITH SAID AIR SPACE AND TRHOUGH SAID SLOTS WITH THE WASTE RECEIVING INTERIOR OF SAID RECEPTACLE, AND AIR OUTLET MEANS FOR LEADING AIR OUT OF SAID INTERIOR.
Claim 2
Dependent Claim
179 words
RECEPTACLE FOR THE PRODUCTION OF EARTH IMPROVING SUBSTANCE FROM ORGANIC WASTE, COMPRISING AN INVERTED TOP SECTION AND A BOTTOM SECTION, SAID SECTIONS HAVING CONGRUENT TRAPEZOIDAL VERTICAL CROSS SECTIONS AND THE TOP SECTION BEING TURNED 180* IN THE HORIZONTAL PLANE RELATIVE TO THE BOTTOM SECTION AND DETACHABLY MOUNTED UPON THE BOTTOM SECTION TO FORM A LID THEREFOR, THE DIMENSIONS OF ONE OF SAID SECTIONS BEING SMALLER THAN THOSE OF THE OTHER SECTION IN ORDER TO HOUSE THE MAJOR PART OF SAID ONE SECTION WITHIN SAID OTHER TRAY FOR TRANSPORTATION WHEN INVERTED AND TURNED 180*, AN INNER BOTTOM WITHIN SAID BOTTOM SECTION HAVING AN INCLINED PORTION AND DEFINING AN AIR SPACE THEREBELOW, AT LEAST PART OF SAID INCLINED PORTION BEING OF STAIRCASE SHAPE WITH OBLIQUE STEPS FORMED BY PLATES WITH SLOTS AND SPACERS BETWEEN ADJACENT STEPS, WHEREBY ADJACENT PLATES PARTLY OVERLAP EACH OTHER TO PREVENT WASTE FROM PENETRATING SAID SLOTS, AIR INLET MEAND COMMUNICATING WITH SAID AIR SPACE AND TRHOUGH SAID SLOTS WITH THE WASTE RECEIVING INTERIOR OF SAID RECEPTACLE, AND AIR OUTLET MEANS FOR LEADING AIR OUT OF SAID INTERIOR.
Claim 3
Dependent Claim
43 words
Receptacle according to claim 1, having inverted chutes of semicircular cross section attached to and sloping downwards from the upper part of said inclined portion to a limiting wall extending downwards from the upper end of an opposed part of the bottom section.
Claim 4
Dependent Claim
42 words
Receptacle according to claim 1, wherein the area of a horizontal cross section of said air space is gradually increasing as the section is taken from the upper part of said inclined portion downwardly to the bottom portion of said inclined portion.
Claim 5
Dependent Claim
42 words
Receptacle according to claim 1, wherein the area of a horizontal cross section of said air space is gradually decreasing as the section is taken from the upper part of said inclined portion downwardly to the bottom portion of said inclined portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |