John F O'Connor

US Patent:

42303567, Oct 28, 1980

Filed:

Oct 23, 1978

Appl. No.:

5/953852

Inventors:

John D. O'Connor - Miami FL

International Classification:

A47F 1306

US Classification:

294 19R

Abstract:

A tile-grout applicator for expeditiously applying grout to tile after it has been layed such as on a tile, marble and slate floor or the like, comprising a lightweight, rigid elongated blade mounting member, a somewhat flexible grout applicator blade removably connectable to said support member, and a handle connected at substantially a 35 degree angle to said blade support member such that when the support portion of the blade support member is parallel to the horizontal, the handle forms approximately a 35 degree angle. The support member includes a blade-retaining bar which projects at substantially a 90 degree angle to the support member along the midportion of the support member in a downward direction such that a groove disposed in the flexible applicator blade receives the protruding area on the support member to allow the resilient blade to become affixed to the support member. The blade has a tapered edge at substantially a 45 degree angle, the angular portion being disposed on the side of the applicator opposite the motion of the applicator. The length of the blade size may be varied to accommodate either cementitious grout or epoxy-like grout, a shorter blade being used for epoxy-like grout.

US Patent:

6271726, Aug 7, 2001

Filed:

Jan 10, 2000

Appl. No.:

9/480831

Inventors:

Bert L. Fransis - San Diego CA
John Francis O'Connor - San Diego CA

Assignee:

Conexant Systems, Inc. - Newport Beach CA

International Classification:

H03F 345

US Classification:

330254

Abstract:

An amplifier circuit including a novel degeneration input stage that permits a low Noise Figure and superior linearity to be achieved in combination. The amplifier is suitable for use in fully integrated direct-conversion tuner circuits, and provides continuously variable gain functionality implemented by steering current away from an output load of the amplifier through differential transistor pairs located in the current signal paths of an input stage. Voltage headroom problems are avoided by placing the attenuation resistors of the degenerated input stage in the signal path, such that there is little or no DC voltage drop across the resistors. Further, this arrangement permits very accurate on-chip matching to an off-chip signal source. The distribution of IP3 values over the gain range of the amplifier, as well as gain and NF characteristics, are dependent on resistor ratios rather than absolute values. These amplifier characteristics are thus largely temperature and process independent.