US3871945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically actuable element
Assignee: Dayco Products Canada Inc
•
Filing: 1973-03-12
•
Granted: 1975-03-18
•
Expires: 1993-03-12
Abstract
Abstract A middle tape punched to receive magnets is provided first with a tape on one side then with magnets in the punched apertures and then with a tape on the other side to provide a source of a series of magnetically actuable elements.
Inventors
- 👤 Donald Winrow
- 👤 Charles Norman Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:33
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/37; G09F9/375; H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; H01F7/00; H01F7/02; H01F7/0205; H01F7/0221; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T428/00; Y10T428/22; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24752
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
A plurality of tape layers arranged so that a plurality of magnetically rotatable thin flat members may be formed therefrom comprising: three laminated layers of tape extending longitudinally together, with adjacent layers arranged to adhere to eacH other, both said outer tapes being set back from at least one edge of said middle tape, a series of magnet apertures in said middle tape spaced longitudinally therealong, and located in that portion of said tape covered on each side by said outer tapes, magnets in said apertures magnetizable at a predetermined angle relative to the longitudinal extension direction of the tape, a series of cut-out locations in said middle tape, spaced longitudinally therealong and located in that portion of said middle tape, which is exposed on each side, by the set-back of said outer tapes, said cut-out locations being so arranged that each magnet aperture is a predetermined bearing and distance from one of said cut-out locations.
Claim 2
Dependent Claim
156 words
A plurality of tape layers arranged so that a plurality of magnetically rotatable thin flat members may be formed therefrom comprising: three laminated layers of tape extending longitudinally together, with adjacent layers arranged to adhere to eacH other, both said outer tapes being set back from at least one edge of said middle tape, a series of magnet apertures in said middle tape spaced longitudinally therealong, and located in that portion of said tape covered on each side by said outer tapes, magnets in said apertures magnetizable at a predetermined angle relative to the longitudinal extension direction of the tape, a series of cut-out locations in said middle tape, spaced longitudinally therealong and located in that portion of said middle tape, which is exposed on each side, by the set-back of said outer tapes, said cut-out locations being so arranged that each magnet aperture is a predetermined bearing and distance from one of said cut-out locations.
Claim 3
Dependent Claim
21 words
A product as claimed in claim 1 wherein said outer tapes are set back from both edges of said middle tape.
Claim 4
Dependent Claim
108 words
A magnetically rotatable element of relatively wide relatively thin substantially planar shape, whose thickness is made up of a middle and two outer layers of tape, said middle layer being formed to provide spindles projecting from opposed sides thereof beyond said outer layers of tape, with said spindles defining a rotary axis for said element approximately parallel to said plane, an aperture in said middle layer of tape located to be occluded on each side by one of said outer layers, a magnet in said aperture of approximately the thickness of said middle layer, magnetizable with a component at an angle to the axis defined by said spindle.
Claim 5
Dependent Claim
108 words
A magnetically rotatable element of relatively wide relatively thin substantially planar shape, whose thickness is made up of a middle and two outer layers of tape, said middle layer being formed to provide spindles projecting from opposed sides thereof beyond said outer layers of tape, with said spindles defining a rotary axis for said element approximately parallel to said plane, an aperture in said middle layer of tape located to be occluded on each side by one of said outer layers, a magnet in said aperture of approximately the thickness of said middle layer, magnetizable with a component at an angle to the axis defined by said spindle.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |