US3587014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positioning device for instrument assembly
Assignee: GORDON CLAUD S 5710 KENOSHA STREET RICHMOND ILLINOIS 60071 A CORP OF
•
Filing: 1970-01-13
•
Granted: 1971-06-22
•
Expires: 1990-01-13
Abstract
Abstract A magnet-positioning device by which a cylindrical core magnet is accurately centered and securely held within an electrical instrument casing. The device includes a hollow bracket having inwardly projecting tabs on the sides thereof which provide a seat for the core magnet. An end of the magnet supports a circular plate which has a pair of notches at opposite points in the edge thereof. These notches are engaged by a pair of aligned centering screws which penetrate the bracket sides at an elevation removed from the inwardly projecting tabs. The screws cam the core magnet against the seat tabs and axially align the core magnet within the bracket and thus within the instrument casing.
Inventors
- 👤 Julius Nador
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:39
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; G; G01; G01R; G01R11/00; G01R11/02; G01R5/00; G01R5/02; G01R5/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
A positioning device for cylindrical core magnets, the device including a hollow bracket, the improvement comprising, seating means on the inside of the bracket against which the core magnet is seated, a disc retained against an end of the core magnet opposite the seated end, a plurality of indentations in said disc in the edge thereof, and holding means penetrating sides of said bracket engaging said indentations, said indentations and holding means having complementary surfaces camming said magnet against the bracket seating means.
Claim 2
Dependent Claim
83 words
A positioning device for cylindrical core magnets, the device including a hollow bracket, the improvement comprising, seating means on the inside of the bracket against which the core magnet is seated, a disc retained against an end of the core magnet opposite the seated end, a plurality of indentations in said disc in the edge thereof, and holding means penetrating sides of said bracket engaging said indentations, said indentations and holding means having complementary surfaces camming said magnet against the bracket seating means.
Claim 3
Independent Claim
101 words
A device for positioning a cylindrical core magnet in an instrument casing wherein the magnet is held within a hollow bracket, the improvement comprising internal seating means in the bracket, a pair of aligned setscrews penetrating the bracket sides at an elevation spaced from the seating means, circular disc means retained against one end of the core magnet opposite the end seated against said seating means, a pair of opposed indentations in the circular edge of said disc means engageable by said setscrews, the setscrews and indentations having complementary surfaces by which said core magneT is cammed against the seating means.
Claim 4
Independent Claim
101 words
A device for positioning a cylindrical core magnet in an instrument casing wherein the magnet is held within a hollow bracket, the improvement comprising internal seating means in the bracket, a pair of aligned setscrews penetrating the bracket sides at an elevation spaced from the seating means, circular disc means retained against one end of the core magnet opposite the end seated against said seating means, a pair of opposed indentations in the circular edge of said disc means engageable by said setscrews, the setscrews and indentations having complementary surfaces by which said core magneT is cammed against the seating means.
Claim 5
Dependent Claim
52 words
The device according to claim 2 wherein the core magnet is provided on opposite curved sides thereof with a pair of semicylindrical pole shoes, the pole shoes extending above said one end of the magnet to form a circular nest, said disc means being contained within said nest but freely rotatable therein.
Claim 6
Dependent Claim
17 words
The device of claim 3 wherein the disc means has substantially the same diameter as the nest.
Claim 7
Dependent Claim
43 words
The device of claim 3 wherein the core magnet is molded with a pair of aligned and opposed notches in the edge of said one end alignable with the indentations in said disc means to avoid interference of the setscrews with the magnet.
Claim 8
Dependent Claim
31 words
The device of claim 4 in which each setscrew has a conical end, the indentations being V-notches, the apex of each notch being pointed toward the center of the disc means.
Claim 9
Dependent Claim
137 words
An instrument assembly including a cylindrical core magnet, a substantially rectangular hollow bracket in which the magnet is held, the bracket including a pair of internally extending shoulder portions on the sides thereof constituting a seating means for the core magnet, the bracket further including a pair of externally extending lugs, and an outer cylindrical ring in which the bracket is held by means of said lugs, the improvement comprising a pair of aligned cone setscrews penetrating the bracket sides at an elevation spaced from the seating means, disc means retained on one end of the core magnet opposite the end seated against said seating means, a pair of opposed indentations in said disc means engageable by said setscrews, the setscrews and indentations having complementary surfaces by which the core magnet is cammed against said seating means.
Claim 10
Dependent Claim
137 words
An instrument assembly including a cylindrical core magnet, a substantially rectangular hollow bracket in which the magnet is held, the bracket including a pair of internally extending shoulder portions on the sides thereof constituting a seating means for the core magnet, the bracket further including a pair of externally extending lugs, and an outer cylindrical ring in which the bracket is held by means of said lugs, the improvement comprising a pair of aligned cone setscrews penetrating the bracket sides at an elevation spaced from the seating means, disc means retained on one end of the core magnet opposite the end seated against said seating means, a pair of opposed indentations in said disc means engageable by said setscrews, the setscrews and indentations having complementary surfaces by which the core magnet is cammed against said seating means.
Claim 11
Dependent Claim
24 words
The device of claim 7 wherein said notches are V-notches, the apex of each notch being pointed towards the center of the disc means.
Claim 12
Dependent Claim
31 words
The device of claim 7 in which said outer cylindrical ring is provided with a pair of diametrically opposed axially extending inner slots, said bracket means being positionable in said slots.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |