US6222191B1 — Occupancy sensor

Claim 1

Independent Claim 101 words

An occupancy based load controller, comprising: at least one occupancy sensor, including at least one passive infrared sensor; a passive infrared lens operable to focus infrared energy from a plurality of directions toward said passive infrared sensor; a passive infrared mask operable to block infrared radiation from selected directions; a sensor case assembly enclosing said occupancy sensors; a passive infrared retaining ring removably engaging said passive infrared lens and passive infrared mask to said sensor case assembly; and wherein said mask is operable to rotate within and relative to said sensor case assembly to adjust the spatial sensitivity of said sensor.

Claim 2

Dependent Claim 101 words

An occupancy based load controller, comprising: at least one occupancy sensor, including at least one passive infrared sensor; a passive infrared lens operable to focus infrared energy from a plurality of directions toward said passive infrared sensor; a passive infrared mask operable to block infrared radiation from selected directions; a sensor case assembly enclosing said occupancy sensors; a passive infrared retaining ring removably engaging said passive infrared lens and passive infrared mask to said sensor case assembly; and wherein said mask is operable to rotate within and relative to said sensor case assembly to adjust the spatial sensitivity of said sensor.

Claim 3

Dependent Claim 17 words

The load controller of claim 1 , wherein said passive infrared lens is a multi-faceted Fresnel lens.

Claim 4

Dependent Claim 26 words

The load controller of claim 1 , wherein said passive infrared mask is an oblong pattern mask operable to pass infrared radiation in a narrow pattern.

Claim 5

Dependent Claim 17 words

The load controller of claim 1 , wherein said passive infrared mask is a 180 degree mask.

Claim 6

Dependent Claim 17 words

The load controller of claim 1 , wherein said passive infrared mask is a 270 degree mask.

Claim 7

Dependent Claim 17 words

The load controller of claim 1 , wherein said passive infrared mask is a 360 degree mask.

Claim 8

Dependent Claim 21 words

The load controller of claim 1 , wherein said passive infrared mask is operable to rotate in increments of 30 degrees.

Claim 9

Dependent Claim 33 words

The load controller of claim 1 , wherein said sensor case assembly further comprises one or more light pipes operable to conduct light from a LED motion indicator through said sensor case assembly.

Claim 10

Dependent Claim 119 words

An occupancy based load controller, comprising: at least one occupancy sensor, including at least one ultrasonic transmitter and sensor; a sensor case assembly enclosing said at least one occupancy sensor; a light-emitting motion indicator within said sensor case assembly; at least one light pipe within said sensor case assembly, said light pipe including a first surface coupled to said light-emitting motion indicator and a second surface coupled adjacent to an exterior of said sensor case assembly; said at least one light pipe operable to conduct light from said light-emitting motion indicator within said sensor to said exterior of said sensor case assembly, said first surface acting as a light input and said second surface acting as a light output.

Claim 11

Dependent Claim 119 words

An occupancy based load controller, comprising: at least one occupancy sensor, including at least one ultrasonic transmitter and sensor; a sensor case assembly enclosing said at least one occupancy sensor; a light-emitting motion indicator within said sensor case assembly; at least one light pipe within said sensor case assembly, said light pipe including a first surface coupled to said light-emitting motion indicator and a second surface coupled adjacent to an exterior of said sensor case assembly; said at least one light pipe operable to conduct light from said light-emitting motion indicator within said sensor to said exterior of said sensor case assembly, said first surface acting as a light input and said second surface acting as a light output.

Claim 12

Dependent Claim 15 words

The load controller of claim 9 , wherein said first and second surfaces are contiguous.

Claim 13

Dependent Claim 91 words

An occupancy based load controller mountable to a surface of a structure, comprising: at least one occupancy sensor; a sensor case assembly enclosing said at least one occupancy sensor; and a sensor mounting plate adapted to be fastened to the surface of the structure, said sensor mounting plate being removably coupled to said sensor case assembly with one or more mounting tabs to permit removal of said sensor case assembly and said occupancy sensors from said sensor mounting plate without removing said sensor mounting plate from the surface of the structure.

Claim 14

Dependent Claim 91 words

An occupancy based load controller mountable to a surface of a structure, comprising: at least one occupancy sensor; a sensor case assembly enclosing said at least one occupancy sensor; and a sensor mounting plate adapted to be fastened to the surface of the structure, said sensor mounting plate being removably coupled to said sensor case assembly with one or more mounting tabs to permit removal of said sensor case assembly and said occupancy sensors from said sensor mounting plate without removing said sensor mounting plate from the surface of the structure.

Claim 15

Dependent Claim 34 words

The load controller of claim 11 , further comprising: a sensor mounting stud; and fastening means adapted for securing said sensor mounting plate and said sensor mounting stud to the surface of the structure.

Claim 16

Dependent Claim 19 words

The load controller of claim 12 , wherein the structure the load controller is mounted to is a ceiling.

Claim 17

Dependent Claim 20 words

The load controller of claim 12 , wherein the structure the load controller is mounted to is a junction box.

Claim 18

Dependent Claim 20 words

The load controller of claim 12 , wherein the structure the load controller is mounted to is a light ballast.

Claim 19

Dependent Claim 19 words

The load controller of claim 12 , wherein the structure the load controller is mounted to is a wall.

Claim 20

Dependent Claim 78 words

The load controller of claim 11 , wherein said sensor mounting plate permits rotation of said sensor case assembly without rotating said sensor mounting plate, said sensor mounting plate comprising: a generally flat plate; a shallow rim on a perimeter of said flat plate; and a plurality of teeth on said shallow rim, said teeth being operable with a plurality of teeth on said sensor case assembly to provide tactile feedback during rotation of said sensor case assembly.

Claim 21

Dependent Claim 21 words

The load controller of claim 11 , wherein said sensor mounting plate comprises four mounting tabs uniformly spaced 90 degrees apart.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2004-04-23	2004-10-23	2005-04-24	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2008-04-23	2008-10-23	2009-04-24	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2012-04-23	2012-10-23	2013-04-24	$7700.00	Window Closed / Lapsed

Occupancy sensor

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