Patent US3681735A successfully refreshed from Google Patents.
US3681735A
Expired / Lapsed
US
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Push-button type switching apparatus
Assignee: Individual
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Filing: 1970-10-23
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Granted: 1972-08-01
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Expires: 1990-10-23
Abstract
Abstract A push-button type switching apparatus is provided comprised of a base having a concave space at the center and guide holes at both sides of the concave space, a push-button cap which caps said base, a magnetic path, which is arranged in the concave space of the base, and a galvano-magnetro effect device which is positioned in said magnetic path. The magnetic path is formed with a U-shaped magnetic frame, both ends of which project upward and a moving yoke which turns around one end of the magnetic frame as the fulcrum. The push-button cap is provided with guide bars which vertically slide in the guide holes and an actuating means which causes the moving yoke to vary the density of magnetic flux applied to the galvano-magnetro effect device.
Inventors
- 👤 Noboru Masuda
- 👤 Tunekazu Kobayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:23
CPC Classifications
H; H01; H01H; H01H36/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
187 words
A push-button type switching apparatus comprised of: a. a non-magnetic base having a long narrow concavity at the center of an upper surface and vertical guide holes at both sides of said concavity; b. A non-magnetic push-button cap which slidably caps the base so as to cover the upper surface of the base, aid cap being provided with (1) guide bars having upper ends and lower ends, said guide bars being in fixed association associateion with the inside top of the push-button cap and which freely slide through said guide holes and (2) a projection which is provided at an internal surface opposite to one lengthwise side of the long narrow concavity; c. a plurality of resetting means which are associated with the guide bars to retain said push-button cap in home position; d. a magnetic path in the long narrow concavity of the base, including a moving yoke actuated by the projection when the push-button cap is pressed down; and e. at least one galvano-magnetro effect device arranged in said magnetic path so that the density of magnetic flux varies with motion of the moving yoke.
Claim 2
Dependent Claim
187 words
A push-button type switching apparatus comprised of: a. a non-magnetic base having a long narrow concavity at the center of an upper surface and vertical guide holes at both sides of said concavity; b. A non-magnetic push-button cap which slidably caps the base so as to cover the upper surface of the base, aid cap being provided with (1) guide bars having upper ends and lower ends, said guide bars being in fixed association associateion with the inside top of the push-button cap and which freely slide through said guide holes and (2) a projection which is provided at an internal surface opposite to one lengthwise side of the long narrow concavity; c. a plurality of resetting means which are associated with the guide bars to retain said push-button cap in home position; d. a magnetic path in the long narrow concavity of the base, including a moving yoke actuated by the projection when the push-button cap is pressed down; and e. at least one galvano-magnetro effect device arranged in said magnetic path so that the density of magnetic flux varies with motion of the moving yoke.
Claim 3
Dependent Claim
37 words
A push-button type switching apparatus according to claim 1, wherein guide cylinders are inserted into said guide holes and resetting springs are housed in the guide cylinders to push up the lower ends of the guide bars.
Claim 4
Dependent Claim
48 words
A push-button type switching apparatus according to claim 2, wherein the lower ends of guide bars to be inserted into said guide cylinders are threaded, guide rings are mounted on the threaded portions of the guide bars and the guide rings are pushed up by the resetting springs.
Claim 5
Dependent Claim
46 words
A push-button type switching apparatus according to claim 3, wherein the guide cylinders, which restrain the guide rings to prevent turning of the rings in said cylinders, are maintained in the guide holes so as to perMit the guide cylinders to rotate in the guide holes.
Claim 6
Dependent Claim
57 words
A push-button type switching apparatus according to claim 1, wherein hooks are positioned at the upper openings of the guide holes, stoppers which engage said hooks when the push-button cap is released are provided at the lower ends of the guide bars and resetting springs are housed in the guide holes to push up the guide bars.
Claim 7
Dependent Claim
41 words
A push-button type switching apparatus according to claim 1, wherein spaces are formed under the guide holes by eliminating portions of the base at its lower end so that the lower ends of the guide bars can project into said spaces.
Claim 8
Dependent Claim
131 words
A push-button type switching apparatus according to claim 6, wherein U-shaped guide frames having free sides, the central portions of which are longer than the length of the guide holes, are attached to the base so that said free sides of said guide frames extend above and under the guide holes and the central portions of said guide frames lightly contact the sides of the base free sides being provided with apertures which are aligned with the guide holes; the guide bars are inserted through the apertures of the guide frames and the guide holes so that the lower ends of the guide bars are projected into the space below; and resetting springs which simultaneously actuate the guide frames and guide bars are associated with said guide frames and guide bars.
Claim 9
Dependent Claim
62 words
A push-button type switching apparatus according to claim 7, wherein the U-shaped guide frames are mounted to the sides of the base corresponding to the guide holes, and both free sides of the guide frames are forced to contact the upper and lower openings of the guide holes so that the apertures of the guide frames are aligned with the guide holes.
References Cited (Backward Citations)
US3537046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |