| Patent Number |
Title Of Patent |
Date Issued |
| 7345864 |
Voltage limiter for coaxial cable carrying RF signals and voltage |
March 18, 2008 |
| A voltage limiter for a coaxial cable line that carries an RF signal and an AC powering voltage signal is provided, including a signal input carrying a first AC voltage signal and an RF signal, a signal output arranged in series with the input and carrying the RF signal and a second |
| 7332984 |
Electronic signal filter including solderless ground clip having surge protection and shielding |
February 19, 2008 |
| An electronic signal filter is provided, including a first filter housing having a filter cavity, a circuit board having a slot positioned within the filter cavity, and a ground clip. The ground clip includes a slot-retaining portion positioned within and in contact with an inner edg |
| 6989994 |
Circuit board sub-assemblies, methods for manufacturing same, electronic signal filters includin |
January 24, 2006 |
| An electronic signal filter includes a cylindrical housing and a circuit board positioned therein having a plurality of peripheral edges and at least two circular through-holes formed therein. Each through-hole is inwardly spaced from one of the peripheral edges of the circuit board, |
| 6949989 |
Electronic signal filter including solderless ground clip having surge protection and shielding |
September 27, 2005 |
| An electronic signal filter is provided, including a first filter housing member, a second filter housing member, and a circuit board positioned within a filter cavity. The circuit board includes a slot. A ground clip is also provided, including a slot-retaining portion positioned within |
| 6933806 |
Electrical signal filter with solderless ground connection |
August 23, 2005 |
| An electrical signal filter is provided, including a first filter housing member and an abutted second filter housing member that define an internal filter cavity. A circuit board positioned within the filter cavity has at least one plated hole passing from a first surface thereof to an |
| 6842101 |
Tunable inductor |
January 11, 2005 |
| A tunable inductor is provided, including an elongate mandrel having a central axis, and having a helical groove of predetermined pitch formed on an outer surface thereof. A flange having at least one guide member is also included proximate a first end of the mandrel and positioned s |
| 6842086 |
Two-pole notch filter |
January 11, 2005 |
| A tunable top-pole passive notch circuit for attenuating select frequencies of a multi-frequency CATV signal. The circuit includes an input for receiving a multi-frequency CATV signal, and an output for transmitting a portion of the multi-frequency CATV signal, A filter network for a |
| 6829813 |
Method of installing an electrical signal filter |
December 14, 2004 |
| An electrical signal filter housing of the type including a threaded female connector adapted to mate with a hexagonal cable connector having a span X, the filter housing including a cylindrical body having a span Y, which is substantially greater than X, a threaded female connector port |
| 6791436 |
Modular electrical signal filter assembly |
September 14, 2004 |
| A modular electronic signal filter assembly is provided, including a plurality of modular filter housing members joined to one another in a longitudinal direction via a plurality of coupling members. The outer peripheral surfaces of the filter housing members are provided with mechan |
| 6759927 |
Isolation shield assembly for electrical filters and a method of manufacturing electrical filter |
July 6, 2004 |
| An electronic signal filter is provided, including a cylindrical housing and a single circuit board having a first filter section and a second filter section being positioned within the interior compartment of the cylindrical housing such that it effectively divides the interior comp |
| 6674342 |
Electrical signal filter with improved isolation shield |
January 6, 2004 |
| An electrical signal filter including elongate upper and lower filter housing members abutted along a longitudinal seam between the housing members. The housing members hold at least one circuit board. A ground post is formed integrally with the lower filter housing member and is sec |
| 6636129 |
Two-tiered tuned filter |
October 21, 2003 |
| A reduced length filter including a housing having a female connector end and an opposed male connector end, and a circuit board positioned within the housing. The circuit board has first and second filter sections positioned on upper and lower surfaces thereof, and a ground plane po |
| 6560087 |
Electronic signal filter with surge protection mechanism |
May 6, 2003 |
| An electronic signal filter is provided that includes a metal housing which has been adapted to be electrically grounded, and a circuit board positioned within the housing. The circuit board includes a first area and a second area, and has an electrically conductive trace formed on a |
| 6429754 |
Electrical signal filter with improved isolation shield |
August 6, 2002 |
| An electrical signal filter including elongate upper and lower filter housing members abutted along a longitudinal seam between the housing members. The housing members hold at least one circuit board having first and second filter sections electrically connected to one another. An i |
| 6292567 |
Sync suppression television security system with addressable sync restoration |
September 18, 2001 |
| A television transmission security system, including scrambling a television signal by suppressing at least one of the horizontal sync pulse and vertical blanking interval of the television signal; transmitting the scrambled television signal; generating, and separately transmitting alon |
| 6273766 |
Electronic device including a collet assembly with dual receiving sockets |
August 14, 2001 |
| An electronic device of the type including a threaded female connector adapted to mate with a cable connector including a housing, a female connector extending from the housing, and a circuit board positioned within said housing and having a first presoldered conductor wire extending |
| 6210222 |
Coaxial cable connector |
April 3, 2001 |
| A F-type coaxial cable connector includes an outer tubular sleeve which receives an inner tubular post. The inner post includes a projecting barrel portion sized to receive the center conductor and the dielectric layer of a prepared coaxial cable end. The barrel portion includes a ra |
| 6019636 |
Coaxial cable connector |
February 1, 2000 |
| Two-piece and three-piece coaxial cable connectors having common components. Both structures include a connector assembly having first and second sets of circumferential threads, a contact, supported inside the connector assembly via an insulator, having a receiving element and exten |
| 5821831 |
Diplex filter comprising monotonic poles |
October 13, 1998 |
| A three port diplex filter circuit with common, low, and high terminals having a frequency response up to 1 GHz comprises a Chebychev-like low pass filter connected between the common and low terminals and a Chebychev-like high pass filter connected between the common and high termin |
| 5770983 |
Reduced length tuned filter having transverse oriented coils |
June 23, 1998 |
| The invention provides a tuned filter of reduced overall length in which two coils (air core inductors) are placed side by side, in mounting locations that are transverse with respect to the longitudinal direction of the filter, instead of in-line or diagonal to each other. The trans |
| 5726606 |
Pre-emphasis network with variable time delay |
March 10, 1998 |
| A pre-emphasis network used in a television signal jamming encoder has a variable gain tuned amplifier first stage and an attenuable notch filter and variable gain broadband amplifier second stage. The notch filter is tuned to a center frequency above the television signal intermediate |
| 5662494 |
Filter structure with self-sealing collet assembly |
September 2, 1997 |
| A filter structure including a collet assembly of inexpensive design that provides a reliable seal and can be easily implemented during the manufacturing process is disclosed. The collet assembly includes a front cap, a rear insert body, a collet contact extension passing through the |
| 5440282 |
Filter structure with anti-rotation keying |
August 8, 1995 |
| A filter structure of inexpensive design that reliably prevents rotation of a filter housing with respect to an outer sleeve of the filter structure is disclosed. More specifically, a connector portion of an end cap of the filter structure is keyed with an opening provided in a receiving |
| 5202656 |
Frequency shifting tuning process and filter structure |
April 13, 1993 |
| A technique is disclosed to independently tune different sections of a filter by momentarily frequency shifting a first tuned section, preferably by shorting certain nodes in the first tuned section, such that response of a second section can be determined and independently tuned. The fi |
| 5185793 |
Method and apparatus for securing television signals using sideband interdiction |
February 9, 1993 |
| A method and apparatus for securing a television transmission signal from unauthorized reception is disclosed that employs a sideband interdiction technique. A portion of the signal's sideband content is enhanced such that the signal is rendered useless for reception. The signal is decod |
| 5168251 |
Quality factor improvement for filter application |
December 1, 1992 |
| A tuned filter having an improved Q is disclosed in which two or more inductors are placed in parallel to increase the net Q relative to a single inductor of the same net inductance and/or two or more capacitors are placed in series to increase the net Q relative to a single capacitor |
| 5148133 |
Quality factor improvement for filter applications |
September 15, 1992 |
| A tuned filter having an improved Q is disclosed in which two or more inductors are placed in parallel to increase the net Q relative to a single inductor of the same net inductance and/or two or more capacitors are placed in series to increase the net Q relative to a single capacitor |
| 4807285 |
Method and apparatus for scrambling a television signal |
February 21, 1989 |
| An in-band television signal scrambling method and apparatus are disclosed which employ a scrambler which receives and scrambles a television signal by suppressing the amplitude of the horizontal synchronizing signals contained therein to a point below the "black" level and which generat |
| 4802214 |
Method and apparatus for identifying and rendering operative particular descramblers in a televi |
January 31, 1989 |
| An in-band television signal scrambling method and apparatus are disclosed which employ a scrambler which receives and scrambles a television signal and one or more descramblers for restoring the scrambled television signal to an unscrambled condition. A tier level encoding scheme is use |
| 4451803 |
Split tuning filter |
May 29, 1984 |
| A split tuning filter is disclosed in which at least two separate electrically interconnected filter sections mounted on a common circuit board are magnetically isolated through an isolation area defined by a pair of spaced isolation shields. A conductor interconnecting the two filte |
| 4311974 |
Wide band directional coupler |
January 19, 1982 |
| A directional coupler for sampling energy traversing a CATV system of the type wherein wide band television signals are extracted from a coaxial transmission line situated at points located at varying distances from the line amplifier. The coupler includes a voltage sensing transformer i |
