US3894203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cradle switch for telephone apparatus having self-aligning, pivoted contact assembly
Assignee: GTE International Inc
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Filing: 1974-01-08
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Granted: 1975-07-08
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Expires: 1994-01-08
Abstract
Abstract A cradle switch for telephones in which the contact elements, for dust protection, are enclosed by a housing, in turn covered by a hood which is tiltable by the cradle and which controls one or more comb-shaped contact spring members through the medium of corresponding arms rigidly attached to, or integral with, the hood. The contact springs of each comb-shaped member on both sides slidably engage contact pins disposed in corresponding rows in the bottom of the housing, the lower ends of these contact pins being insertable in a printed circuit board. The hood is supported for rocking movement by rows of bearing pins extending from both sides of the housing into recesses in the side walls of the hood. The design avoids adjustments, e.g., to adapt the switch to different switching functions such as break-make, makebefore-break, etc.
Inventors
- 👤 Helmut Heinrich Walter Diehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:34
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/06; H04M1/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
An improved cradle switch for a telephone, said switch comprising in combination a cup-shaped lower portion of insulating material including in the bottom thereof at least one row of contact pins which outside of said lower portion serve for connections and within said lower portion serve as contact elements, the side walls of said lower portion including bearing pins with a pair of slits in said side walls adjacent to said bearing pins, with one slit on each side of said bearing pins, and a hood tiltably supported on said bearing pins, said hood including at least one arm of insulating material with a combshaped spring contact member secured to the free end of said arm, said spring contacts being adapted to slidably engage said row of contact pins.
Claim 2
Dependent Claim
129 words
An improved cradle switch for a telephone, said switch comprising in combination a cup-shaped lower portion of insulating material including in the bottom thereof at least one row of contact pins which outside of said lower portion serve for connections and within said lower portion serve as contact elements, the side walls of said lower portion including bearing pins with a pair of slits in said side walls adjacent to said bearing pins, with one slit on each side of said bearing pins, and a hood tiltably supported on said bearing pins, said hood including at least one arm of insulating material with a combshaped spring contact member secured to the free end of said arm, said spring contacts being adapted to slidably engage said row of contact pins.
Claim 3
Dependent Claim
41 words
The improved cradle switch as claimed in claim 1, wherein said hood is provided on opposite sides with recesses engaged by corresponding bearing pins for tiltably supporting said hood on opposite sides close to the edge of said cup-shaped lower portion.
Claim 4
Dependent Claim
45 words
The improved cradle switch as claimed in claim 1 wherein the tilt axis of the hood is perpendicular to the row of contact pins and wherein the contact springs of said member are adapted to bear and wipe against opposed sides of said contact pins.
Claim 5
Dependent Claim
24 words
The improved cradle switch as claimed in claim 1, wherein said arm of insulating material carrying said combshaped member is integral with said hood.
Claim 6
Dependent Claim
33 words
The improved cradle switch as claimed in claim 2 wherein said hood includes slide grooves leading to said recesses, said slide grooves having a width which decreases in the direction toward said recesses.
Claim 7
Dependent Claim
55 words
The improved cradle switch as claimed in claim 1, wherein said arm of insulating material includes at its free end a pair of resilient tongues and said comb-shaped member includes an aperture adapted to receive said tongues in locking engagement whereby saiD comb-shaped member may be snap-fastened to said tongues in self-holding and self-aligning relationship.
References Cited (Backward Citations)
US2902550A
Cited
US3610845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |