US3812451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich connector plug
Assignee: Individual
•
Filing: 1972-10-30
•
Granted: 1974-05-21
•
Expires: 1992-10-30
Abstract
Abstract A sandwich plug for use in a telephone installation for connecting an automatic dialing mechanism in series with the telephone line.
Inventors
- 👤 N Buglewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:36
CPC Classifications
H; H01; H01R; H01R31/00; H04; H04M; H04M1/00; H04M1/02; H04M1/0293
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
181 words
A sandwich connector plug for connecting auxiliary equipment such as an automatic telephone dialer in series with the jack of a telephone line comprising: a pair of readily separable mating parts, one of such parts having contact elements projecting therefrom for engaging said jack and the other of such parts having contact elements for receiving projecting contact elements from a telephone line plug, the inner ends of said contact elements being normally in engagement when assembled, an adapter insert between said mating parts for insulatingly separating the inner end of a selected contact element of said one part from its corresponding contact element of said other part with the inner ends of the remaining corresponding contact elements of said parts in contact, said adapter insert and one of said mating parts being provided with interfitting notch and projection means to locate said insert in place, and means for attaching a wire in conductive relationship with each of said separated contact elements, said wires being adapted to be connected to said auxiliary apparatus in series with one wire of said telephone line.
Claim 2
Dependent Claim
181 words
A sandwich connector plug for connecting auxiliary equipment such as an automatic telephone dialer in series with the jack of a telephone line comprising: a pair of readily separable mating parts, one of such parts having contact elements projecting therefrom for engaging said jack and the other of such parts having contact elements for receiving projecting contact elements from a telephone line plug, the inner ends of said contact elements being normally in engagement when assembled, an adapter insert between said mating parts for insulatingly separating the inner end of a selected contact element of said one part from its corresponding contact element of said other part with the inner ends of the remaining corresponding contact elements of said parts in contact, said adapter insert and one of said mating parts being provided with interfitting notch and projection means to locate said insert in place, and means for attaching a wire in conductive relationship with each of said separated contact elements, said wires being adapted to be connected to said auxiliary apparatus in series with one wire of said telephone line.
Claim 3
Dependent Claim
156 words
A sandwich connector plug for connecting auxiliary equipment such as an automatic telephone dialer in series with the jack of a telephone line comprising: a pair of mating parts, one of such parts having contact elements projecting therefrom for engaging said jack and the other of such parts having contact elements for receiving projecting contact elements from a telephone line plug, the inner ends of said contact elements being normally in engagement when assembled, an adapter insert for insulatingly separating the inner end of a selected contact element of said one part from its corresponding contact element of said other part, and means for attaching a wire in conductive relationship with each of said separated contact elements comprising conductor elements attached to said insert on opposite sides thereof and in conductive relationship with their contact elements, said wires being adapted to be connected to said auxiliary apparatus in series with one wire of said telephone line.
Claim 4
Dependent Claim
156 words
A sandwich connector plug for connecting auxiliary equipment such as an automatic telephone dialer in series with the jack of a telephone line comprising: a pair of mating parts, one of such parts having contact elements projecting therefrom for engaging said jack and the other of such parts having contact elements for receiving projecting contact elements from a telephone line plug, the inner ends of said contact elements being normally in engagement when assembled, an adapter insert for insulatingly separating the inner end of a selected contact element of said one part from its corresponding contact element of said other part, and means for attaching a wire in conductive relationship with each of said separated contact elements comprising conductor elements attached to said insert on opposite sides thereof and in conductive relationship with their contact elements, said wires being adapted to be connected to said auxiliary apparatus in series with one wire of said telephone line.
Claim 5
Dependent Claim
155 words
A sandwich connector plug for connecting auxiliary equipment such as an automatic telephone dialer in series with the jack of a telephone line comprising: a pair of mating parts, one of such parts having contact elements projecting therefrom for engaging said jack and the other of such parts having contact elements for receiving projecting contact elements from a telephone line plug, the inner ends of said contact elements being normally in engagement when assembled, an adapter insert for insulatingly separating the inner end of a selected contact element of said one part from its corresponding contact element of said other part, said insert being provided with openings for permitting contact between the inner ends of selected corresponding contact elements, and means for attaching a wire in conductive relationship with each of said separated contact elements, said wires being adapted to be connected to said auxiliary apparatus in series with one wire of said telephone line.
Claim 6
Dependent Claim
155 words
A sandwich connector plug for connecting auxiliary equipment such as an automatic telephone dialer in series with the jack of a telephone line comprising: a pair of mating parts, one of such parts having contact elements projecting therefrom for engaging said jack and the other of such parts having contact elements for receiving projecting contact elements from a telephone line plug, the inner ends of said contact elements being normally in engagement when assembled, an adapter insert for insulatingly separating the inner end of a selected contact element of said one part from its corresponding contact element of said other part, said insert being provided with openings for permitting contact between the inner ends of selected corresponding contact elements, and means for attaching a wire in conductive relationship with each of said separated contact elements, said wires being adapted to be connected to said auxiliary apparatus in series with one wire of said telephone line.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |