Patent US3798763A successfully refreshed from Google Patents.
US3798763A
Expired / Lapsed
US
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Method of making a rotary switch stator
Assignee: Individual
•
Filing: 1973-02-23
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Granted: 1974-03-26
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Expires: 1993-02-23
Abstract
Abstract A method of manufacturing a rotary switch stator in which round section wire used for the stator pins is formed into meander loops which are placed in a mold so that certain portions of the meander are held in radial formation and other portions are held in parallel arrangement whilst the intermediate interconnecting portions are within the annular cavity of the mold which is filled with liquid electrically insulating material. After the insulating material has solidified, the excess parts of the wire are cut off to leave a stator having a plurality of equi-spaced radial contact studs and the same number of parallel electrical contact members respectively connected thereto.
Inventors
- 👤 M Deltoer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:27
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/04; H01H11/06; H01H11/0056; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011; Y10T29/49105; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/4922; Y10T29/49222
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
207 words
A method of manufacturing a rotary switch stator including the steps of: a. bending at least one wire to form a plurality of meander loops having arcuate portions at the ends interconnecting long rectilinear portions; b. taking the meander loops at one end and arranging parts to form a plurality of rectilinear portions in equi-spaced relation in a circle and radially aligned with respect to the centre of the circle; c. arranging the remaining parts of the meander loop in parallel arrangement whereby a number of intermediate connecting parts are provided between the radial parts and the parallel parts; d. holding said radial parts and those portions of said parallel parts adjacent said intermediate parts in fixed relation; e. placing said intermediate parts in a molding zone; f. pumping into said molding zone, electrically insulating material in liquid form; g. allowing said liquid to set within the molding zone; h. removing the resulting cast stator element from said molding zone; i. cutting away the inner arcuate portions joining the radial portions so as to leave a plurality of equi-spaced contact studs; and j. cutting away the excess parts of the parallel portions of the meander loops so as to leave a corresponding number of electrical contact members.
Claim 2
Independent Claim
207 words
A method of manufacturing a rotary switch stator including the steps of: a. bending at least one wire to form a plurality of meander loops having arcuate portions at the ends interconnecting long rectilinear portions; b. taking the meander loops at one end and arranging parts to form a plurality of rectilinear portions in equi-spaced relation in a circle and radially aligned with respect to the centre of the circle; c. arranging the remaining parts of the meander loop in parallel arrangement whereby a number of intermediate connecting parts are provided between the radial parts and the parallel parts; d. holding said radial parts and those portions of said parallel parts adjacent said intermediate parts in fixed relation; e. placing said intermediate parts in a molding zone; f. pumping into said molding zone, electrically insulating material in liquid form; g. allowing said liquid to set within the molding zone; h. removing the resulting cast stator element from said molding zone; i. cutting away the inner arcuate portions joining the radial portions so as to leave a plurality of equi-spaced contact studs; and j. cutting away the excess parts of the parallel portions of the meander loops so as to leave a corresponding number of electrical contact members.
Claim 3
Dependent Claim
98 words
The method according to claim 1, including: forming a second set of meander loops of identical form to the first set; placing the radial parts of the second set in between the radial parts of the first set so that all the radial conductors are equi-spaced in the circle; and holding said parallel parts of the first and second sets in two parallel planes whereby the resulting contact members after the molding and cutting operations are located in two parallel rows of contacts, the elements of one row being staggered in relation to those of the other row.
Claim 4
Dependent Claim
30 words
The method according to claim 2, wherein there are 12 radial parts for forming 12 equispaced radial contact studs, and the contact elements are arranged in two rows of six.
Claim 5
Dependent Claim
26 words
The method according to claim 2, further comprising: compressing the radial parts of the two sets substantially in the same plane parallel to said parallel planes.
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |