Patent US3818150A successfully refreshed from Google Patents.
US3818150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone switchhook with bi-directional operation
Assignee: NEC Platforms Ltd
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Filing: 1972-11-02
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Granted: 1974-06-18
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Expires: 1992-11-02
Abstract
Abstract Switchhook apparatus for a telephone subset including a receiver cradle fastened to two interconnected members, mounted for rotation on shafts whose axes are mutually perpendicular.
Inventors
- 👤 I Kunimine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:21
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/06; H04M1/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
175 words
Telephone switchhook apparatus capable of movement in two directions for installation in a desk and wall mounted subset, said apparatus comprising: a switchhook frame; an electrical contact means mounted to said switchhook frame; a switchhook lever means; a first shaft means for mounting said switchhook lever means within said switchhook frame permitting the rotation of said lever means in said first direction about the axis of said shaft means; a motion conversion means; a second shaft means for securing said conversion means to said lever means for permitting the rotation of said conversion Means in said second direction about an axis at right angles to the axis of said first shaft means; and means connected to said switchhook frame for activating said contact means upon the movement of said switchhook lever means in said one direction when the switchhook apparatus is installed in a desk subset and for activating said contact means upon the movement of said motion conversion means in said second direction when said switchhook apparatus is installed in a wall mounted subset.
Claim 2
Dependent Claim
175 words
Telephone switchhook apparatus capable of movement in two directions for installation in a desk and wall mounted subset, said apparatus comprising: a switchhook frame; an electrical contact means mounted to said switchhook frame; a switchhook lever means; a first shaft means for mounting said switchhook lever means within said switchhook frame permitting the rotation of said lever means in said first direction about the axis of said shaft means; a motion conversion means; a second shaft means for securing said conversion means to said lever means for permitting the rotation of said conversion Means in said second direction about an axis at right angles to the axis of said first shaft means; and means connected to said switchhook frame for activating said contact means upon the movement of said switchhook lever means in said one direction when the switchhook apparatus is installed in a desk subset and for activating said contact means upon the movement of said motion conversion means in said second direction when said switchhook apparatus is installed in a wall mounted subset.
Claim 3
Dependent Claim
103 words
Switchhook apparatus according to claim 1 which further comprises receiver hanger means fastened to said switchhook lever means and said conversion means for rotating said lever means in said first direction when the switchhook apparatus is installed in a desk set and for rotating said conversion means in said second direction when the switchhook apparatus is installed in a wall mounted set; and mechanical energy storage means, coupled between said conversion means and said frame means, for rotating said conversion means about the axis of said second shaft means, and for rotating said lever means about the axis of said first shaft means.
Claim 4
Dependent Claim
120 words
In a telephone subset, switchhook apparatus capable of movement in two directions, said apparatus comprising: a switchhook frame; a switchhook lever means; a first shaft means for mounting said switchhook lever means within said switchhook frame permitting the rotation of said lever means in said first direction about the axis of said shaft means; a motion conversion means; a second shaft means for securing said conversion means to said lever means for permitting the rotation of said conversion means in said second direction about an axis at right angles to the axis of said first shaft means; the combination being so constructed and arranged that said switchhook apparatus can be used in a subset mounted in vertical and horizontal positions.
Claim 5
Dependent Claim
120 words
In a telephone subset, switchhook apparatus capable of movement in two directions, said apparatus comprising: a switchhook frame; a switchhook lever means; a first shaft means for mounting said switchhook lever means within said switchhook frame permitting the rotation of said lever means in said first direction about the axis of said shaft means; a motion conversion means; a second shaft means for securing said conversion means to said lever means for permitting the rotation of said conversion means in said second direction about an axis at right angles to the axis of said first shaft means; the combination being so constructed and arranged that said switchhook apparatus can be used in a subset mounted in vertical and horizontal positions.
Claim 6
Dependent Claim
112 words
In a telephone subset according to claim 3 having a receiver connected to said subset and wherein said telephone subset switchhook apparatus further comprises a receiver hanger means fastened to said conversion means; and mechanical energy storage means, coupled between said conversion means and said frame means for rotating said conversion means about the axis of said second shaft means, when said subset is mounted in the vertical position and said receiver is removed from said receiver hanger means, and for rotating said lever means about the axis of said first shaft means, when said subset is mounted in a horizontal position and said receiver is removed from said receiver hanger means.
Claim 7
Dependent Claim
42 words
In a telephone subset according to claim 4 wherein said conversion means further includes means for establishing the subset''s electrical connections representative of the ''''off-hook'''' and ''''on-hook'''' conditions thereof when said receiver is removed from and replaced on said receiver hanger means.
References Cited (Backward Citations)
US2640109A
Cited
US2848554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |