US3916119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone switch
Assignee: Nortel Networks Ltd
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Filing: 1974-11-25
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Granted: 1975-10-28
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Expires: 1994-11-25
Abstract
Abstract A switch for a telephone, in particular the switch hook assembly, is adapted to plug in receiving sockets provided in the telephone housing, instead of being attached by screws. The switch is generally of conventional form, with a frame mounted on a base, the base carrying the various contacts. The frame is provided with legs which are inserted into sockets - for example hollow bosses molded as part of the telephone housing. A resilient retaining member can be provided for retaining the assembly in position.
Inventors
- 👤 Beverley William Gumb
- 👤 Ronald Joseph Morrell
- 👤 Fredrick Thomas Cogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:34
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/06; H04M1/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
118 words
A telephone switch comprising: a frame including a planar cross member, spaced apart downwardly extending legs and spaced apart upwardly extending legs, said legs substantially in the same plane as said cross member, a base mounted on said cross member; a lever arm pivotally mounted on said upwardly extending legs; a plurality of contact members mounted on said base; a card member on said lever arm, said card member operative to make and break contacts between selected pairs of said contact members on pivoting of said lever arm; resilient means urging said lever arm to a predetermined pivotal position on said frame, said downwardly extending legs adapted to be inserted in cooperative recesses formed in said telephone housing.
Claim 2
Dependent Claim
118 words
A telephone switch comprising: a frame including a planar cross member, spaced apart downwardly extending legs and spaced apart upwardly extending legs, said legs substantially in the same plane as said cross member, a base mounted on said cross member; a lever arm pivotally mounted on said upwardly extending legs; a plurality of contact members mounted on said base; a card member on said lever arm, said card member operative to make and break contacts between selected pairs of said contact members on pivoting of said lever arm; resilient means urging said lever arm to a predetermined pivotal position on said frame, said downwardly extending legs adapted to be inserted in cooperative recesses formed in said telephone housing.
Claim 3
Dependent Claim
58 words
A telephone switch as claimed in claim 1, said contact members arranged in two groups, a group on each side of said planar crossmember; said card member pivotal from one pivot position to another, and eNgaging one group of contact members in one pivotal position and engaging the other group of contact members in the other pivotal position.
Claim 4
Dependent Claim
47 words
A telephone switch as claimed in claim 1, said lever arm including spaced apart downwardly extending legs, the lower ends of said legs of said lever arm bifurcated, the bifurcated parts fitting over the upper ends of said upwardly extending legs of said frame and pivotal thereon.
Claim 5
Dependent Claim
54 words
A telephone switch as claimed in claim 3, including an upwardly extending extension on the upper end of one of said upwardly extending legs of said frame and a lateral projection on said extension, and a hole in the related downwardly extending leg of said lever arm, the lateral projection positioned in said hole.
Claim 6
Dependent Claim
20 words
A telephone switch as claimed in claim 4, said hole a slot extending in a lateral direction across said leg.
Claim 7
Dependent Claim
25 words
A telephone switch as claimed in claim 1, said contact members extending through said base and terminals formed on the ends of said contact members.
Claim 8
Dependent Claim
139 words
A telephone set comprising: a housing and a hook switch mounted on said housing, said hook switch comprising: a frame including a planar cross member, spaced apart downwardly extending legs and spaced apart upwardly extending legs, said legs in planes substantially parallel to the plane of said planar cross member; a base mounted on said cross member; a lever arm pivotally mounted on said upwardly extended legs; a plurality of contact members mounted on said base; a card member on said lever arm, said card member operative to make and break contacts between selected pairs of said contact members on pivoting of said lever arm; and resilient means urging said lever arm to a predetermined pivotal position on said frame; said housing including spaced apart recesses positioned for the reception of said downwardly extending legs of said hook switch.
Claim 9
Dependent Claim
139 words
A telephone set comprising: a housing and a hook switch mounted on said housing, said hook switch comprising: a frame including a planar cross member, spaced apart downwardly extending legs and spaced apart upwardly extending legs, said legs in planes substantially parallel to the plane of said planar cross member; a base mounted on said cross member; a lever arm pivotally mounted on said upwardly extended legs; a plurality of contact members mounted on said base; a card member on said lever arm, said card member operative to make and break contacts between selected pairs of said contact members on pivoting of said lever arm; and resilient means urging said lever arm to a predetermined pivotal position on said frame; said housing including spaced apart recesses positioned for the reception of said downwardly extending legs of said hook switch.
Claim 10
Dependent Claim
104 words
A telephone set as claimed in claim 7, including a resilient retaining member to retain said hook switch in position in said housing, said retaining member comprising an upwardly extending member having an enlarged portion at its upper end, said enlarged portion including a downwardly and outwardly inclined face, and a lip beneath said inclined face, the arrangement such that on insertion of the downwardly extending legs in said recesses in said housing, said base of said hook switch moves down said downwardly and outwardly inclined face flexing said retaining member, said lip engaging over said base when said hook switch is completely inserted.
References Cited (Backward Citations)
US3027432A
Cited
US3165597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |