Patent US4706818A successfully refreshed from Google Patents.
US4706818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic flatware retriever
Assignee: Individual
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Filing: 1986-05-16
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Granted: 1987-11-17
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Expires: 2006-05-16
Abstract
Abstract A device for preventing magnetically attractable flatware and other objects from falling into a food disposer. Round tubes containing magnets are arranged parallel to one another across a collar at the mouth of the disposer. Each tube contains an assembly of cylindrical magnets, separated by spacers, which are magnetized and oriented to provide a strong attractive force around the tube.
Inventors
- 👤 Stephen W. Zutell
- 👤 David A. Wade
- 👤 James V. Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:08
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/26; B03C1/28; B65; B65F; B65F2210/00; B65F2210/152; B65F2210/1525; Y; Y10; Y10S; Y10S209/00; Y10S209/926
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
A magnetic device for preventing flatware from falling into a food disposer machine, comprising, a non-magnetic collar adapted to be mounted over the mouth of the machine, said collar having an annular wall defining a vertical opening for the passage of food scraps into the machine, and at least two magnetic elements mounted by said collar in said opening, each element extending across said opening from one side thereof to an opposite side, each element comprising a round, smooth, hollow, cylindrical non-magnetic sleeve containing a series of permanent magnets aligned axially within it, said magnets separated from each other by non-magnetic spacers, said collar having mounting means projecting into said opening from said wall, said mounting means positioned and sized for seating and capturing the ends of the respective sleeves, said collar deforming outwardly in a direction parallel to said elements and away from said ends if a compressive force is applied thereto transversely to said elements, thereby to enable said sleeves to be seated on and captured by said mounting means when the compressive force is removed.
Claim 2
Dependent Claim
178 words
A magnetic device for preventing flatware from falling into a food disposer machine, comprising, a non-magnetic collar adapted to be mounted over the mouth of the machine, said collar having an annular wall defining a vertical opening for the passage of food scraps into the machine, and at least two magnetic elements mounted by said collar in said opening, each element extending across said opening from one side thereof to an opposite side, each element comprising a round, smooth, hollow, cylindrical non-magnetic sleeve containing a series of permanent magnets aligned axially within it, said magnets separated from each other by non-magnetic spacers, said collar having mounting means projecting into said opening from said wall, said mounting means positioned and sized for seating and capturing the ends of the respective sleeves, said collar deforming outwardly in a direction parallel to said elements and away from said ends if a compressive force is applied thereto transversely to said elements, thereby to enable said sleeves to be seated on and captured by said mounting means when the compressive force is removed.
Claim 3
Dependent Claim
34 words
The device of claim 1 wherein each magnet has parallel end faces which are perpendicular to the axis of the respective element, each magnet having its opposite magnetic poles on its respective end faces.
Claim 4
Dependent Claim
30 words
The device of claim 2 wherein magnets on opposite sides of a spacer are oriented to repel each other, and the magnetic lines of flux extend outside of said sleeve.
Claim 5
Dependent Claim
51 words
The device of claim 1 wherein said collar is of inverted hat-shaped and comprises a horizontal outer flange for seating in a bowl, said flange extending outwardly around the top of said wall, and an inturned lip at the bottom end of said wall on which a flexible baffle is seated.
Claim 6
Dependent Claim
48 words
The device of claim 1 wherein said mounting means comprises opposed pairs of bosses on said wall, said bosses sized and positioned to project into the ends of said sleeves to position and secure them and to confine the series of magnets in the interior of said sleeve.
Claim 7
Dependent Claim
35 words
The device of claim 1 wherein said collar mounts two such elements in parallel horizontal position, each element extending across said opening, said elements positioned on opposite sides of the center of said vertical opening.
Claim 8
Dependent Claim
23 words
The device of claim 6 wherein said elements are staggered vertically, one being above the other, each being off center in said opening.
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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) | 1990-11-16 | 1991-05-18 | 1991-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-16 | 1995-05-18 | 1995-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-16 | 1999-05-18 | 1999-11-17 | $7700.00 | Window Closed / Lapsed |