Patent US3671891A successfully refreshed from Google Patents.
US3671891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small type electromagnetic contactor
Assignee: Panasonic Electric Works Co Ltd
•
Filing: 1971-08-30
•
Granted: 1972-06-20
•
Expires: 1991-08-30
Abstract
Abstract A small type electromagnetic contactor wherein a turning frame is rotatably bridged between a pair of opposing slots in a case having a build-in electromagnetic device, and actuating arm of an actuating rod member slidably mounted in an upper case member is disposed to be in contact with said turning frame.
Inventors
- 👤 Yushito Usui
- 👤 Kenji Shiojima
- 👤 Toshikatsu Hatakeyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:28
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16; H01H50/18; H01H50/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
254 words
A small type electromagnetic contactor comprising an upper member which comprises a case opened at one side, a plurality of fixed contacts secured integral to said case, an actuating rod having a plurality of movable contacts respectively arranged to face each said fixed contact, said actuating rod being disposed slidably along a path in the case at said opened side and provided with an actuating arm projected at an end and outside the case, and a means for biasing said actuating rod in opening direction of the contacts; and a main body member which comprises a case opened at one side, an electromagnetic device contained in said case, a plunger slidably mounted in said electromagnetic device, said plunger being extended at a head out of the device, a connecting pin provided at said head of the plunger, and a turning frame having a shoulder part and a hooking part and pivotably mounted in an open slot disposed inside the case, said hooking part being engaged with said connecting pin of the plunger; said upper member being superposed on the open side of the case of said main body so that the actuating arm of the actuating rod will engage said shoulder part of said turning frame, whereby an energization of the electromagnetic device will cause the turning frame to be pivotally turned by the connecting pin of the plunger attracted so as to urge the actuating arm of the actuating rod with the shoulder part of the frame in closing direction of the contacts.
Claim 2
Dependent Claim
254 words
A small type electromagnetic contactor comprising an upper member which comprises a case opened at one side, a plurality of fixed contacts secured integral to said case, an actuating rod having a plurality of movable contacts respectively arranged to face each said fixed contact, said actuating rod being disposed slidably along a path in the case at said opened side and provided with an actuating arm projected at an end and outside the case, and a means for biasing said actuating rod in opening direction of the contacts; and a main body member which comprises a case opened at one side, an electromagnetic device contained in said case, a plunger slidably mounted in said electromagnetic device, said plunger being extended at a head out of the device, a connecting pin provided at said head of the plunger, and a turning frame having a shoulder part and a hooking part and pivotably mounted in an open slot disposed inside the case, said hooking part being engaged with said connecting pin of the plunger; said upper member being superposed on the open side of the case of said main body so that the actuating arm of the actuating rod will engage said shoulder part of said turning frame, whereby an energization of the electromagnetic device will cause the turning frame to be pivotally turned by the connecting pin of the plunger attracted so as to urge the actuating arm of the actuating rod with the shoulder part of the frame in closing direction of the contacts.
Claim 3
Dependent Claim
39 words
An electromagnetic contactor according to claim 1, wherein said turning frame comprises mutually parallel arms disposed on both sides of a main body, pivoting shafts disposed outside said arms, and hook members disposed at the ends of said arms.
Claim 4
Dependent Claim
32 words
An electromagnetic contactor according to claim 1, in which said actuating arm of the actuating rod is brought into contact with the turning frame substantially at the center of its main body.
Claim 5
Dependent Claim
52 words
An electromagnetic contactor according to claim 1, in which said pivoting shafts of the turning frame are rotatably engaged respectively in vertically opened slots disposed on the internal side walls of the lower case, and each upper part of said open slot is covered with a projection from the upper case 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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |