US3681722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor current relay
Assignee: GEM Products LLC
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Filing: 1971-11-09
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Granted: 1972-08-01
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Expires: 1991-11-09
Abstract
Abstract A small electromatic relay especially useful as a surge current relay wherein the component parts thereof are easily fabricated, relatively inexpensive to produce and the assembly of which is easily accomplished not requiring a high degree of skill wherein it is almost impossible to misassemble the components in other than their intended operable state.
Inventors
- 👤 Eric C Johnsen
- 👤 William M Polk
- 👤 Robert A Brockman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:49
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
233 words
An electrical switch comprising the combination: a main body member having an upper portion with at least two spaced channels receiving first and second stationary terminal contact members in captive relationship and defining an upper recess chamber in which a bridging contact member, as hereinafter defined, moves; a lower planar portion connected to said upper portion through an innerset intermediate portion defining a housing within which an armature member reciprocally moves and the exterior surface of which carries an exciting coil to operate said armature member; a base member defining an upper planar portion for engagement with the lower planar portion of said body member and forming the lower terminus of the path of travel of said armature member, said base member carrying third and fourth stationary contact terminal members in retained relationship and being adapted to be retained as an assembled switch in secured assembly; a cap member defining an enclosure over the path of travel of said armature member and having complementary channels to captively receive said first and second retaining contact members and having retaining members for reception and securement in aligned relationship with other of said members; and a bridging contact mounted on and moveable with said armature for effecting electrical connection with one of said first and second stationary contact members and one of said third and fourth stationary terminal contact members upon energization of said exciting coil.
Claim 2
Dependent Claim
233 words
An electrical switch comprising the combination: a main body member having an upper portion with at least two spaced channels receiving first and second stationary terminal contact members in captive relationship and defining an upper recess chamber in which a bridging contact member, as hereinafter defined, moves; a lower planar portion connected to said upper portion through an innerset intermediate portion defining a housing within which an armature member reciprocally moves and the exterior surface of which carries an exciting coil to operate said armature member; a base member defining an upper planar portion for engagement with the lower planar portion of said body member and forming the lower terminus of the path of travel of said armature member, said base member carrying third and fourth stationary contact terminal members in retained relationship and being adapted to be retained as an assembled switch in secured assembly; a cap member defining an enclosure over the path of travel of said armature member and having complementary channels to captively receive said first and second retaining contact members and having retaining members for reception and securement in aligned relationship with other of said members; and a bridging contact mounted on and moveable with said armature for effecting electrical connection with one of said first and second stationary contact members and one of said third and fourth stationary terminal contact members upon energization of said exciting coil.
Claim 3
Dependent Claim
28 words
The switch in accordance with claim 1 wherein said cap member is recessed to form an upper chamber into which one of first and second stationary contacts prOjects.
Claim 4
Dependent Claim
32 words
The electrical switch in accordance with claim 2 wherein said first and second electrical contacts are stationary terminals and wherein one of said terminals has a button protruberance juxtapositioned said bridging contact
Claim 5
Dependent Claim
32 words
The electrical switch in accordance with claim 3 wherein said bridging contact comprises a member which is press fitted onto a stub protruberance of said armature which is composed of ferromagnetic material.
Claim 6
Dependent Claim
37 words
The electrical switch in accordance with claim 4 wherein said bridging contact member carries a button contact for electrical contact and engagement with said button protruberance of said one of said first and second stationary contact terminals.
Claim 7
Dependent Claim
29 words
The electrical switch in accordance with claim 5 wherein at least one of said cap, main body and base members are provided with locating means to facilitate assembly thereof.
Claim 8
Dependent Claim
17 words
The electrical switch in accordance with claim 6 wherein said innerset, intermediate portion is tubular in configuration.
Claim 9
Dependent Claim
27 words
The electrical switch in accordance with claim 7 wherein said armature member is in electrical contact with one of said third and fourth stationary terminal contact members.
Claim 10
Dependent Claim
55 words
The electrical switch in accordance with claim 8 wherein said electrical contact between said armature and said one of said third and fourth stationary terminal contact members, is obtained through a biasing means which normally retains said bridging contact member out of electrical contact with one of said first and second stationary terminal contact members.
Claim 11
Dependent Claim
16 words
The electrical switch in accordance with claim 9 wherein said biasing means is a spring member.
Claim 12
Dependent Claim
45 words
The electrical switch in accordance with claim 10 wherein the lower surfaces of said planar portion of said main body member carries at least one plate-like projection projecting into said bottom member forming said lower terminus of the path of travel of said armature member.
Claim 13
Dependent Claim
33 words
The electrical switch in accordance with claim 11 wherein the interior surface of said cap member is configured so as to be received in nestled relationship with respect to said main body member.
Claim 14
Dependent Claim
24 words
The electrical switch in accordance with claim 12 wherein said cap, main body member and base member are formed of electrically insulating moldable plastic.
Claim 15
Dependent Claim
35 words
The electrical switch in accordance with claim 13 wherein retaining pins are disposed through at least two of said cap, main body and base members for obtaining rigid securement of said members with each other.
Claim 16
Dependent Claim
31 words
The electrical switch in accordance with claim 14 wherein at least said main body member is provided with locating means to facilitate placement of said cap member thereonto for assembly purposes.
Claim 17
Dependent Claim
45 words
The electrical switch in accordance with claim 15 wherein the base member is provided with opposed through-holes through which retaining pins are passed and upon which securement means are positioned to retain said cap member, main body member and base member in rigid secured relationship.
Claim 18
Dependent Claim
28 words
The electrical switch in accordance with claim 16, wherein means are provided to secure said biasing member to one of said third and fourth stationary terminal contact members.
Claim 19
Dependent Claim
29 words
The electrical switch in accordance with claim 17 wherein the said cap member has notched side walls to permit projection therethrough of said first and second stationary contact members.
Claim 20
Dependent Claim
37 words
The electrical switch in accordance with claim 18 wherein said upper portion of said main body portion is provided with channels to captively receive in coaction with said cap member, said first and second stationary contact members.
Claim 21
Dependent Claim
32 words
The electrical switch in accordance with claim 19 wherein a side wall of said base member is channelled to receive one of said third and fourth stationary contact members in retained relationship.
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) | 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 |