# US 12,594,521 B2 · Automatic spray dispenser

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- Number: US 12,594,521 B2
- Document ID: US12594521B2
- Status: Granted
- Kind: B2
- Application number: 17/857,010
- Filed: 2022-07-03
- Published: 2024-01-04
- Granted: 2026-04-07
- Earliest claimed: 2022-07-03
- Applicants: Robert C. Danville; Andrew G. Przyjemski
- Inventors: Robert C. Danville; Andrew G. Przyjemski
- Web page: https://patentgrep.com/patent/US12594521B2

## CPC

- B01D 47/06: Spray cleaning
- G01N 33/0004: {Gaseous mixtures, e.g. polluted air}
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

The present invention relates to automatic odor treatment spray dispenser methods.

## Claims

### Claim 1

A method comprising:
a. exposing at least one sensor means to a surrounding environment for detecting and responding to the presence of at least one odor causing agent,
b. periodically converting the response of each sensor means to a periodic electrical output signal,
c. sending each periodic electrical output signal to control means wherein a plurality of periodic electrical output signals are used to calculate by linear least squares regression the slope between the periodic electrical output signals,
d. adding the slopes
e. activating expulsion of an odor treatment agent into the surrounding environment when the added slopes of all sensor means exceeds a threshold level.

### Claim 2 (depends on 1)

The method of claim 1, wherein a plurality of target odor causing agent compositions in the surrounding environment are detected, wherein the responses are converted to electrical output signals for each target odor causing agent composition that vary according to variations in the presence of each output signal, wherein a plurality of successive data points reflecting the electrical output signals are processed for each target odor causing agent composition detected to periodically estimate the slope of a line therethrough by linear least squares regression, and wherein the estimated slopes are added together.

### Claim 3 (depends on 2)

The method of claim 2, wherein the respective slopes are weighted before being added together.

### Claim 4 (depends on 2)

The method of claim 2, wherein the respective slopes are weighted before being added together using weighting factors determined by gradient descent.

### Claim 5 (depends on 2)

The method of claim 2, wherein a first odor causing agent composition is detected and a second odor causing agent composition excluding the first odor causing agent composition is detected.

### Claim 6 (depends on 3)

The method of claim 3, wherein a first odor causing agent composition is detected and a second odor causing agent composition excluding the first odor causing agent composition is detected.

### Claim 7 (depends on 2)

The method of claim 2, wherein a third odor causing agent is detected excluding a first odor causing agent composition, and a second odor causing agent composition is detected excluding the first odor causing agent composition and the third odor causing agent composition.

### Claim 8 (depends on 3)

The method of claim 3, wherein a third odor causing agent is detected excluding a first odor causing agent composition, and a second odor causing agent composition is detected excluding the first odor causing agent composition and the third odor causing agent composition.

### Claim 9 (depends on 2)

The method of claim 2, wherein the data points for each odor causing agent composition are processed to periodically estimate the slope of a line therethrough by moving linear least squares regression.

### Claim 10 (depends on 3)

The method of claim 3, wherein the data points for each odor causing agent composition are processed to periodically estimate the slope of a line therethrough by moving linear least squares regression.