US3573702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyed plug resistor
Assignee: TE Connectivity Corp
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Filing: 1969-11-07
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Granted: 1971-04-06
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Expires: 1989-11-07
Abstract
Abstract A plug device for use in conjunction with radio and television frequency circuits and coaxial cable applications is disclosed. The plug features a load resistor with one lead secured to the body of the plug and another lead adapted to insertably engage the contact-receiving member of a receptacle in a component. The resistor serves to load and subsequently balance the circuit to prevent signal distortion in house droplines or in the continuing remainder of the circuit. The plug also features a rotatable hardened shell which surrounds the body of the device and which rotates relative to the body. Keying means, including cooperating hole means between shell and body and a special keyed wrench device, provide a means by which the plug device may be removed, once installed. This rotatable shell feature in a plug device discourages illegal tampering with electronic equipment, such as theft of the cable signal by freeloaders.
Inventors
- 👤 Michael Francis O'keefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:18
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/62; H01R13/639; H01R13/6397
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
73 words
An electrical plug device comprising outer shell means, an internal body means within said shell means having load resistor means therein and sealing means, said outer shell means being freely rotatable relative to said body means, said body means being adapted to be threaded onto or removed from a counterpart receptacle by special tool means, said sealing means adapted to seal said plug onto a receptacle and prohibit the ingress of moisture thereinto.
Claim 2
Dependent Claim
73 words
An electrical plug device comprising outer shell means, an internal body means within said shell means having load resistor means therein and sealing means, said outer shell means being freely rotatable relative to said body means, said body means being adapted to be threaded onto or removed from a counterpart receptacle by special tool means, said sealing means adapted to seal said plug onto a receptacle and prohibit the ingress of moisture thereinto.
Claim 3
Dependent Claim
87 words
An electrical plug device comprising outer shell means rotatably secured to internal body means, load resistor means and sealing means within said body means, said outer shell means having first hole means in the end thereof disposed to overlie second hole means in the end of said body means, said first and second hole means comprising key means for keying said outer shell means to said body means so that said plug device may be installed upon or removed from a receptacle only by special tool means.
Claim 4
Dependent Claim
87 words
An electrical plug device comprising outer shell means rotatably secured to internal body means, load resistor means and sealing means within said body means, said outer shell means having first hole means in the end thereof disposed to overlie second hole means in the end of said body means, said first and second hole means comprising key means for keying said outer shell means to said body means so that said plug device may be installed upon or removed from a receptacle only by special tool means.
Claim 5
Dependent Claim
68 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed thereon, and outer shell means fixed to said body means and adapted to rotate freely relative to said body whereby said plug device can only be removed by keyed tool means.
Claim 6
Dependent Claim
68 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed thereon, and outer shell means fixed to said body means and adapted to rotate freely relative to said body whereby said plug device can only be removed by keyed tool means.
Claim 7
Dependent Claim
111 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed thereon, outer shell means fixed to said body means and adapted to rotate freely relative to said body, first hole means in said shell means and second hole means in said body means, said first and second hole means adapted to become aligned by the rotation of said shell means, and tool means adapted to engage said plug device and said first and second hole means thereby to install and remove said plug device.
Claim 8
Dependent Claim
111 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed thereon, outer shell means fixed to said body means and adapted to rotate freely relative to said body, first hole means in said shell means and second hole means in said body means, said first and second hole means adapted to become aligned by the rotation of said shell means, and tool means adapted to engage said plug device and said first and second hole means thereby to install and remove said plug device.
Claim 9
Dependent Claim
131 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed therEon, outer shell means fixed to said body means and adapted to rotate relative to said body, first hole means in said shell means and second hole means in said body means, said first and second hole means disposed in offcenter longitudinal relationship relative to the common centerline of said plug device, said first and second hole means further adapted to become aligned by the rotation of said shell means, and tool means adapted to engage said plug device and said first and second hole means thereby to install and remove said plug device.
Claim 10
Dependent Claim
131 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed therEon, outer shell means fixed to said body means and adapted to rotate relative to said body, first hole means in said shell means and second hole means in said body means, said first and second hole means disposed in offcenter longitudinal relationship relative to the common centerline of said plug device, said first and second hole means further adapted to become aligned by the rotation of said shell means, and tool means adapted to engage said plug device and said first and second hole means thereby to install and remove said plug device.
Claim 11
Dependent Claim
164 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed thereon, outer shell means fixed to said body means and adapted to rotate relative to said body means, first hole means in said shell means and second hole means in said body means, said first and second hole means disposed in offcenter longitudinal relationship relative to the common centerline of said plug device, said first and second hole means further adapted to become aligned by the rotation of said shell means, and tool means adapted to engage said plug device and said first and second hole means thereby to install and remove said plug device, said tool means including a shank portion with a circular recess in the end thereof and a pin in said recess, said pin disposed concentrically with said first and second hole means.
Claim 12
Dependent Claim
164 words
In an electrical plug device including body means with resistor means therein, sealing means defined by pliable gasket means adapted to become compressed between said plug device and a counterpart receptacle when said plug device is installed thereon, outer shell means fixed to said body means and adapted to rotate relative to said body means, first hole means in said shell means and second hole means in said body means, said first and second hole means disposed in offcenter longitudinal relationship relative to the common centerline of said plug device, said first and second hole means further adapted to become aligned by the rotation of said shell means, and tool means adapted to engage said plug device and said first and second hole means thereby to install and remove said plug device, said tool means including a shank portion with a circular recess in the end thereof and a pin in said recess, said pin disposed concentrically with said first and second hole means.
References Cited (Backward Citations)
US2839730A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |