Controlled inductance device and method

Inductor devices – With electric and/or magnetic shielding means

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C336S08400R, C336S083000

Reexamination Certificate

active

07009482

ABSTRACT:
Improved inductive apparatus having controlled core saturation which provides a desired inductance characteristic with low cost of manufacturing. In one embodiment, a pot core having a variable geometry gap is provided. The variable geometry gap allows for a “stepped” inductance profile with high inductance at low dc currents, and a lower inductance at higher dc currents, corresponding for example to the on-hook and off-hook states of a Caller ID function in a typical telecommunications line. In other embodiments, single- and multi-spool drum core devices are disclosed which use a controlled saturation element to allow for selectively controlled saturation of the core. Exemplary signal conditioning circuits (e.g., dynamically controlled low-capacitance DSL filters) using the aforementioned inductive devices are disclosed, as well as cost-efficient methods of manufacturing the inductive devices.

REFERENCES:
patent: 1767715 (1930-06-01), Stoekle
patent: 2025093 (1935-12-01), Cotter et al.
patent: 2913640 (1959-11-01), Edgarton
patent: 3546571 (1970-12-01), Fletcher et al.
patent: 3551864 (1970-12-01), Spoldi et al.
patent: 3585553 (1971-06-01), Muckelroy et al.
patent: 4013911 (1977-03-01), Fujiwara et al.
patent: 4047138 (1977-09-01), Steigerwald
patent: 4118678 (1978-10-01), Goshima et al.
patent: 4138636 (1979-02-01), Liberman
patent: 4462016 (1984-07-01), Bland et al.
patent: 4613841 (1986-09-01), Roberts
patent: 4713589 (1987-12-01), Kashiwagi
patent: 4833437 (1989-05-01), Williamson
patent: 4874990 (1989-10-01), Dobnick
patent: 4989574 (1991-02-01), Abe
patent: 5003279 (1991-03-01), Morinaga et al.
patent: 5166655 (1992-11-01), Rogers
patent: 5281942 (1994-01-01), Stokes
patent: 5289359 (1994-02-01), Ziermann
patent: 5350980 (1994-09-01), Dye et al.
patent: 5351167 (1994-09-01), Wai et al.
patent: 5359315 (1994-10-01), Inoue et al.
patent: 5506560 (1996-04-01), Takeuchi et al.
patent: 5670925 (1997-09-01), Gibbs
patent: 5770991 (1998-06-01), Baird
patent: 5939955 (1999-08-01), Chen et al.
patent: 5952907 (1999-09-01), McWilliams et al.
patent: 6005467 (1999-12-01), Abramov
patent: 6087920 (2000-07-01), Abramov
patent: 6091211 (2000-07-01), Koga et al.
patent: 6154028 (2000-11-01), Bushida et al.
patent: 6181777 (2001-01-01), Kiko
patent: 6212259 (2001-04-01), Kiko
patent: 6223419 (2001-05-01), Abramov
patent: 6326874 (2001-12-01), Banzi, Jr. et al.
patent: 6414583 (2002-07-01), Yeh et al.
patent: 6483412 (2002-11-01), Holdahl et al.
patent: 6512438 (2003-01-01), Yoshimori et al.
patent: 6560851 (2003-05-01), Yamamoto et al.
patent: 2004/0150500 (2004-08-01), Kiko
Section 6 of the Magnetics Ferrite Cores Design Manual and Catalog (FC-601); Tuning Assembly Dimensions (18 mm ×11 mm); p. 10 of 37; no date; http://www.mag-inc.com/pdf/Pot—RS—DS—Cores.pdf.
Section 9 of the Magnetics Ferrite Cores Design Manual and Catalog (FC-601); EP Cores and Accessories (EP7); p. 1 of 5; no date; http://www.mag-inc.com/pdf/ep—cores.pdf.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Controlled inductance device and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Controlled inductance device and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlled inductance device and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3600051

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.