US4091244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple contact switch
Assignee: Nortel Networks Ltd
•
Filing: 1977-06-27
•
Granted: 1978-05-23
•
Expires: 1997-06-27
Abstract
Abstract A multiple contact switch has a plurality of contact areas spaced across a base member, a plurality of cantilevered spring contact members mounted side-by-side on the base member with contact portions overlying the contact areas, and a rotary cam member extending over the spring contact members to push the contact members down to make contact. A cam surface is provided for each contact member. The cam member is actuated by a remove actuating member and in a line switch for a telephone set, the switch can be mounted on the base of the telephone set with the cam actuated by a flexible cable which in turn is actuated by means depressed when a hand set is replaced.
Inventors
- 👤 Pak-Jong Chu
- 👤 Jacques Marcel Audette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:50
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/06; H04M1/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
A multi-contact switch for a telephone set, comprising: a base member mounted on one part of said telephone set; a plurality of contact areas on said base member, spaced across said base member; a plurality of elongate cantilever spring contact members extending side-by-side over said base member, a contact member related to each contact area; a contact portion on each contact member, the contact portion over the related contact area, the contact members resiliently biased away from said base member; a rotary cam member mounted over said spring contact members, the rotary axis of the cam member extending normal to the longitudinal axes of the spring contact members; cam surfaces on said rotary cam member, a cam surface for each spring contact member; an arm extending radially at one end of said cam member; a remote actuating member mounted on said telephone set at a position remote from said base member; means for connecting said arm to said remote actuating member.
Claim 2
Dependent Claim
161 words
A multi-contact switch for a telephone set, comprising: a base member mounted on one part of said telephone set; a plurality of contact areas on said base member, spaced across said base member; a plurality of elongate cantilever spring contact members extending side-by-side over said base member, a contact member related to each contact area; a contact portion on each contact member, the contact portion over the related contact area, the contact members resiliently biased away from said base member; a rotary cam member mounted over said spring contact members, the rotary axis of the cam member extending normal to the longitudinal axes of the spring contact members; cam surfaces on said rotary cam member, a cam surface for each spring contact member; an arm extending radially at one end of said cam member; a remote actuating member mounted on said telephone set at a position remote from said base member; means for connecting said arm to said remote actuating member.
Claim 3
Dependent Claim
47 words
A switch as claimed in claim 1, said means for connecting said arm to a remote actuating member comprising a flexible cable, one end of said cable connected to said arm and the other end of said cable including means for connecting to said remote actuating member.
Claim 4
Dependent Claim
82 words
A switch as claimed in claim 2, said flexible cable comprising an inner cable and an outer flexible casing, including attachment means on said base member for attachment of said casing at said one end of said cable, said inner member extending through said attachment means to said arm; further attachment means at said other end of said cable for attachment of said other end of said casing, said inner member extending through said further attachment means to said remote actuating member.
Claim 5
Dependent Claim
55 words
A switch as claimed in claim 3, comprising a line switch for a telephone set, said base member mounted on a base part of the telephone set and said further attachment means mounted on said telephone set housing adjacent to an actuating member moved by removal and replacement of a handset on the telephone set.
Claim 6
Dependent Claim
98 words
A switch as claimed in claim 3, said switch a line switch in a telephone set having a base and a top housing, said base member of said switch mounted on said base of the telephone set, said top housing including means depressed by replacement of a handset on the top housing and forming said remote actuating member, said further attachment means mounted on said top housing and said inner member of said cable connected to said means depressed by the hand set, whereby said cam member is rotated by pushing of said inner member of the cable.
Claim 7
Dependent Claim
106 words
A switch as claimed in claim 3, said switch a line switch in a telephone set having a base and a top housing, said base member of said switch mounted on said base of the telephone set, said top housing including means depressed by replacement of a handset on the top housing and forming said remote actuating member, mounting means extending from said base toward said top housing, means pivotally mounting a lever in said telephone set, one end of said lever in cooperation with said means depressed by the handset and the other end of said lever connected to the inner member of said cable.
Claim 8
Dependent Claim
46 words
A switch as claimed in claim 6, said lever a bell-crank lever, a bracket on said base extending toward said top housing, said bell crank lever pivotally mounted on said bracket, whereby said cam member is rotated by pulling of said inner member of the cable.
References Cited (Backward Citations)
US1169957A
Cited
US2101271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |