US3842231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact spring set for an electromagnetic relay
Assignee: Siemens AG
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Filing: 1973-04-06
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Granted: 1974-10-15
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Expires: 1993-04-06
Abstract
Abstract An electromagnetic relay has a contact spring set in which the contact springs are held in fixed position between two plastic base members, one of which is thermoplastic and is secured to the other by deforming the thermoplastic material during heating by ultrasonic means. The contact springs are aligned in the correct position during assembly by means of registration surfaces mounted on the base member which is not deformed during assembly.
Inventors
- 👤 H Schedele
- 👤 W Bosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:58
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/04; H01H11/06; H01H50/00; H01H50/54; H01H50/56; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
111 words
A contact spring set for an electromagnetic relay comprising a plurality of electrical contact elements, and a block formed of insulating material and comprising first and second insulating members adapted to support said contact elements, said first insulating member being formed of thermoplastic material and said second insulating member being formed of an inherently stable plastic material, said block having a recess formed therein, said electrical contact elements having their contact-making parts supported within said recess, one of said contact elements having a portion interposed between said two insulating members, said two insulating members bearing against said one contact element to maintain it in fixed position relative to said second member.
Claim 2
Dependent Claim
111 words
A contact spring set for an electromagnetic relay comprising a plurality of electrical contact elements, and a block formed of insulating material and comprising first and second insulating members adapted to support said contact elements, said first insulating member being formed of thermoplastic material and said second insulating member being formed of an inherently stable plastic material, said block having a recess formed therein, said electrical contact elements having their contact-making parts supported within said recess, one of said contact elements having a portion interposed between said two insulating members, said two insulating members bearing against said one contact element to maintain it in fixed position relative to said second member.
Claim 3
Dependent Claim
36 words
Apparatus according to claim 1, including a plurality of movable contact elements, said movable contact elements being mounted on said block so that the motion of such movable elements defines a pair of spaced parallel planes.
Claim 4
Dependent Claim
19 words
Apparatus according to claim 1, wherein said contact elements each have a portion interposed between said two interlocked members.
Claim 5
Dependent Claim
19 words
Apparatus according to claim 1 wherein said inherently stable member is provided with means for supporting said contact elements.
Claim 6
Dependent Claim
25 words
Apparatus according to claim 4 wherein said contact elements are pressed against said supporting means by first insulating projections formed integrally with said deformable member.
Claim 7
Dependent Claim
36 words
Apparatus according to claim 1 wherein said two members are interlocked by means of a riveted peg formed integrally with one of said members and received in an aperture provided in the other of said members.
Claim 8
Dependent Claim
34 words
Apparatus according to claim 1 including a terminal connected with said one contact element and adapted to be soldered to an electrical conductor, said terminal extending through an aperture in one of said members.
Claim 9
Dependent Claim
18 words
Apparatus according to claim 7 wherein said aperture is closed by a deformable portion of said other member.
Claim 10
Dependent Claim
41 words
Apparatus according to claim 7 wherein all of said contact elements comprise electrically conductive springs interposed between said two members and terminal elements for each of said springs extending at an angle to said springs through apertures in said one member.
Claim 11
Dependent Claim
18 words
Apparatus according to claim 1 wherein the contact-making parts of said contact elements are spaced from said block.
Claim 12
Dependent Claim
20 words
Apparatus according to claim 1 including a movable contact spring mouNted between inclined supporting surfaces disposed on said two members.
Claim 13
Dependent Claim
36 words
Apparatus according to claim 1 including means for urging one of said contact elements laterally against a supporting wall formed integrally with one of said members by a projection formed integrally with the other said member.
Claim 14
Dependent Claim
35 words
Apparatus according to claim 1 wherein said one contact element has a plurality of projections, said projections being adapted to enter one of said members during assembly of said one member with said other member.
Claim 15
Dependent Claim
28 words
Apparatus according to claim 1 including means formed integrally with one of said members for supporting all of said contact elements preparatory to assembling said two members together.
Claim 16
Independent Claim
79 words
A method for the production of a contact spring set, including the steps of providing first and second insulating members adapted to be interlocked to form a complete contact set assembly, providing a plurality of accurately positioned surfaces on said first member, placing a plurality of contact elements on said accurately positioned surfaces, superposing said second member over said contact elements, and securing said first and second members in fixed relation by each other by deforming said second member.
Claim 17
Independent Claim
79 words
A method for the production of a contact spring set, including the steps of providing first and second insulating members adapted to be interlocked to form a complete contact set assembly, providing a plurality of accurately positioned surfaces on said first member, placing a plurality of contact elements on said accurately positioned surfaces, superposing said second member over said contact elements, and securing said first and second members in fixed relation by each other by deforming said second member.
Claim 18
Dependent Claim
33 words
The method according to claim 15 including the step of deforming a projection integral with said second insulating member without deforming said second member as said projection is urged against a contact member.
Claim 19
Dependent Claim
24 words
The method according to claim 16 wherein said deforming takes place during heating resulting from the application of ultrasonic energy to said second member.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |