US4361822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic pallet
Assignee: Individual
•
Filing: 1981-08-18
•
Granted: 1982-11-30
•
Expires: 2001-08-18
Abstract
Abstract A magnetic pallet incorporating a plurality of individual, flexible polymer magnetic strips in a double layer thickness between metallic front and back enclosure plates to provide a substantially continuous magnetic field across both front and back planar surfaces.
Inventors
- 👤 David T. Adler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:53
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/02; H01F7/0205; H01F7/021; H01F7/0215
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
137 words
Magnetic holding apparatus comprising: first and second metallic plates; and a plurality of individual polymer magnetic materials in strip configuration interposed between said metallic plates, and in contact therewith to form an enclosure to generate a substantially continuous magnetic field across each of the surfaces of said plates; with said individual strip materials each exhibiting North and South polarities across opposing surfaces thereof, and arranged in a double layer thickness in which a North polarity surface of one strip is positioned in contact with a South polarity surface of another strip, and wherein adjacent double layer thickness strips are aligned in opposite magnetic polarity relationship at the points of contact with said metallic plates; whereby an enhanced magnetic circuit is produced and increased magnetic forces of attraction are generated across each surface of said enclosure forming plates.
Claim 2
Dependent Claim
137 words
Magnetic holding apparatus comprising: first and second metallic plates; and a plurality of individual polymer magnetic materials in strip configuration interposed between said metallic plates, and in contact therewith to form an enclosure to generate a substantially continuous magnetic field across each of the surfaces of said plates; with said individual strip materials each exhibiting North and South polarities across opposing surfaces thereof, and arranged in a double layer thickness in which a North polarity surface of one strip is positioned in contact with a South polarity surface of another strip, and wherein adjacent double layer thickness strips are aligned in opposite magnetic polarity relationship at the points of contact with said metallic plates; whereby an enhanced magnetic circuit is produced and increased magnetic forces of attraction are generated across each surface of said enclosure forming plates.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 wherein said individual strips are of a flexible, polymer magnetic material.
Claim 4
Dependent Claim
17 words
The apparatus of claim 1 wherein said first and second plates are of similar metallic material composition.
Claim 5
Dependent Claim
21 words
The apparatus of claim 1 wherein said individual strips are coded to identify the opposing North and South polarity surfaces thereof.
Claim 6
Dependent Claim
28 words
The apparatus of claim 1 wherein said first metallic plate is arranged to provide a seam into which said second metallic plate is inserted in forming said enclosure.
Claim 7
Dependent Claim
23 words
The apparatus of claim 1 wherein said first plate includes aperture means for the hanging of said holding apparatus in the use thereof.
Claim 8
Dependent Claim
18 words
The apparatus of claim 1 wherein said polymer magnetic material strips are each of a one-eighth inch thickness.
Claim 9
Dependent Claim
23 words
The apparatus of claim 7 wherein said metallic plates are configured to provide an enclosure of nine inch by nine inch surface area.
Claim 10
Dependent Claim
30 words
The apparatus of claim 8 wherein nine polymer magnetic strips are interposed between said metallic plates, each of which is of a substantially one inch width and nine inch length.
References Cited (Backward Citations)
US3665355A
Cited
US3942147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-29 | 1986-05-31 | 1986-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-29 | 1990-05-31 | 1990-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-29 | 1994-05-31 | 1994-11-30 | $7700.00 | Window Closed / Lapsed |