Patent US3592982A successfully refreshed from Google Patents.
US3592982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary selector switches for electronic circuits
Assignee: Individual
•
Filing: 1969-11-24
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Granted: 1971-07-13
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Expires: 1989-11-24
Abstract
Abstract A multiple position switch in which the moving contact or contacts slide between a pair of parallel sets of fixed contacts, the movement of the moving contact being obtained from the rotation of a knob which is constrained to a plurality of circumferentially fixed positions so that step by step rotation of the knob causes adjacent pairs of fixed contacts to be bridged by the moving contact step by step.
Inventors
- 👤 Marcel Henri Deltoer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:18
CPC Classifications
H; H01; H01H; H01H19/00; H01H19/54; H01H19/60; H01H19/635; H01H19/6355; H01H19/02; H01H19/10; H01H19/11
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
134 words
A selector switch comprising a rotary knob; a shaft having a plurality of protruding threads and supporting said knob; the knob and shaft having definite angular positions defined by click-stops; at least a pair of shoes in the form of half-nuts of elastic insulating material facing each other and applied against the threads of the shaft; a C-shaped resilient contact blade substantially capping each shoe; a pair of shells facing each other, each enclosing one shoe and provided in the central portion with means parallel to the shaft for guiding the corresponding shoe, and in each lateral portion with a row of stationary contacts, each cooperating with one end of said blade; and means for fitting together said shells substantially in edge to edge relationship for enclosing the shaft, the shoes and the contacts.
Claim 2
Dependent Claim
134 words
A selector switch comprising a rotary knob; a shaft having a plurality of protruding threads and supporting said knob; the knob and shaft having definite angular positions defined by click-stops; at least a pair of shoes in the form of half-nuts of elastic insulating material facing each other and applied against the threads of the shaft; a C-shaped resilient contact blade substantially capping each shoe; a pair of shells facing each other, each enclosing one shoe and provided in the central portion with means parallel to the shaft for guiding the corresponding shoe, and in each lateral portion with a row of stationary contacts, each cooperating with one end of said blade; and means for fitting together said shells substantially in edge to edge relationship for enclosing the shaft, the shoes and the contacts.
Claim 3
Dependent Claim
81 words
A switch according to claim 1, characterized by the fact that the C-shaped blade is tapered towards its ends which are curved at least transversely, said blade being fastened to the half-nut and held curved by a cap surrounding its central portion and the resting surface on the half-nut, which cap is held on each side by a stud engaged in a radial recess in the half-nut, the width of which is larger towards the axis thereof then towards the outside.
Claim 4
Dependent Claim
42 words
A switch according to claim 2, characterized by the fact that the resting surface of the blade blade is a cylindrical portion of the half-nut, and the cap is in contact with the blade only on opposite sides of said resting surface.
Claim 5
Dependent Claim
29 words
A switch according to claim 2, characterized by the fact that the blade has lateral studs held in the recesses of the half-nut by the studs of the cap.
Claim 6
Dependent Claim
36 words
A switch according to claim 1, characterized by the fact that the pitch of the threads of the threaded shaft is 15.24 mm., while the angular step of the control knob of said shaft is 30*.
Claim 7
Dependent Claim
43 words
A switch according to claim 1, characterized by the fact that the stationary contacts are tongues embedded in the material of the shells and protruding towards the inside of the shell, the tongue portions protruding outside of the shell providing the electrical connection.
Claim 8
Dependent Claim
44 words
A switch according to claim 6, characterized by the fact that the assembly of tongues of one and the same shell is obtained from a perforated single metal blade embedded in the mold upon manufacture, the needless connections between tongues being eliminated after molding.
Claim 9
Dependent Claim
41 words
A switch according to claim 6, characterized by the fact that the stationary contacts located on the same side of a shell are separated by bosses forming, towards the inside of the shell, protrusions which are larger than the said contacts.
Claim 10
Dependent Claim
50 words
A switch according to claim 8, characterized by the fact that the bosses are borne by a pair of small barbs of molded material having a low coefficient of friction with respect to the component metal of the blades; which parts are interposed between the adjacent edges of the shells.
Claim 11
Dependent Claim
45 words
A switch according to claim 8, characterized by the fact that the ends of the blades are curved in the longitudinal direction and come into contact at their terminal portion with the bosses and, via a portion close to their center, with the stationary contacts.
Claim 12
Dependent Claim
60 words
A switch according to claim 6, characterized by the fact that the stationary contacts borne by the shells are separated by the same pitch, but are interposed between each other, the distance between two consecutive stationary contacts belonging to the two shells being equal to the linear displacement of the half-nut for one step of rotation of the control knob.
Claim 13
Dependent Claim
31 words
A switch according to claim 11, characterized by the fact that the stationary contacts located on one side of the shells being interconnected, the threaded shaft comprises two half-nuts precisely opposite.
Claim 14
Dependent Claim
47 words
A switch according to claim 11, characterized by the fact that the stationary contacts located on the same side of two shells being separately interconnected, the screw comprises two opposite half-nuts, the contact blade of which are shifted by one step of linear displacement of said half-nuts.
Claim 15
Dependent Claim
52 words
A switch according to claim 11, characterized by the fact that a slide formed of several pairs of opposite half-nuts is mounted on the threaded shaft, the distance between two contact bridges borne by two adjacent half-nuts being equal to twice the distance between stationary contacts of one and the same shell.
Claim 16
Dependent Claim
42 words
A switch according to claim 11, characterized by the fact that the distance between two consecutive stationary contacts of one and the same shell is equal to 2.54 mm., while the axial length of a half-nut is slightly less than 5.08 mm.
Claim 17
Dependent Claim
41 words
A switch according to claim 6, characterized by the fact that the shells are assembled by connections between the housing of the head of the threaded shaft and a bottom plate which can form the stop for the said threaded shaft.
Claim 18
Dependent Claim
77 words
A switch according to claim 1, characterized by the fact that the threaded shaft is rigidly connected with a head comprising at least one borehole for the housing of two balls with an interposed compression spring, said head being housed in a housing having star-shaped depressions which receive the ball portions in elastic protrusion with respect to said head, the distance between two consecutive depressions being equal to one angular step of rotation of the control knob.
Claim 19
Dependent Claim
55 words
A switch according to claim 17, characterized by the fact that the threaded portion of the shaft and the head thereof are of molded material of a low coefficient of friction, the flared end of a metal shaft which forms an extension of the threaded portion being embedded in the molded material of the head.
Claim 20
Dependent Claim
33 words
A switch according to claim 18, characterized by the fact that the threaded shaft, its head and its extension, are tubular are are transversed by an axial shaft operated by an auxiliary knob.
Claim 21
Dependent Claim
49 words
A switch according to claim 18, characterized by the fact that an extension of the flaring of the metal shaft protrudes with respect to the head and cooperates with the opening of a metal plate placed agaInst the housing containing the head for limiting the rotation of the shaft.
Claim 22
Dependent Claim
60 words
A switch according to claim 1, characterized by the fact that the threadings borne by the two facing half-nuts permit placing the two corresponding C-blades with an axial spacing equal to one step of linear displacement of the half-nuts corresponding to one step of linear displacement of the half-nuts corresponding to one step of angular rotation of the control knob.
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |