# US 10,311,699 B2 · Swimming pool entrance detector

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- Number: US 10,311,699 B2
- Document ID: US10311699B2
- Status: Granted
- Kind: B2
- Application number: 16/092,445
- Filed: 2017-04-04
- Published: 2019-04-11
- Granted: 2019-06-04
- Earliest claimed: 2016-04-21
- Applicants: Amos Tepper
- Inventors: Amos Tepper
- Web page: https://patentgrep.com/patent/US10311699B2

## CPC

- G08B 21/082: {by monitoring electrical characteristics of the water}
- E04H 4/06: Safety devices; Coverings for baths
- E04H 4/10: Coverings of flexible material
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D)

## Abstract

A swimming-pool entrance detector (10a), including: means (50) for disposing the swimming-pool entrance detector (10a) in water of a swimming pool (12) above the ground (56) thereof; and a first optical sensor (30), for receiving optical rays (40a1, 40a2), thereby receipt of the optical rays (40a1, 40a2) may indicate presence of at least one opening (14a) in a cover (18) of the swimming pool (12).

## Claims

### Claim 1

A swimming-pool entrance detector (10a), comprising:
means (50) for disposing said swimming-pool entrance detector (10a) in water of a swimming pool (12) above a ground (56) thereof, and
a first optical sensor (30), for receiving optical rays (40a1, 40a2),
wherein said first optical sensor (30) is disposed facing a ground (56), for receiving optical rays (40a2) reflected therefrom,
thereby receipt of said optical rays (40a1, 40a2) indicates presence of at least one opening (14a) in a cover (18) of the swimming pool (12), and
thereby said indication of the presence of the least one opening (14a) in the cover (18) of the swimming pool (12), is obtained even in case said swimming-pool entrance detector (10a) is covered by the cover (18).

### Claim 2 (depends on 1)

A swimming-pool entrance detector (10a) according to claim 1, further comprising:
a second optical sensor (28), disposed for facing a top (58), for receiving optical rays (40a1) therefrom; and
an electronic unit (26) for detecting a difference between optical intensities sensed by said first (30) and second (28) optical sensors,
thereby presence of said difference indicates said presence of the at least one opening (14a) in the cover (18), while not indicating presence of an opening (14a) in case the cover (18) is not present or is widely open.

### Claim 3 (depends on 1)

A swimming-pool entrance detector (10a) according to claim 1, further comprising:
an electronic unit (26) comprising a memory (36A), for detecting a difference along time between optical intensities sensed by said first (30) optical sensor,
thereby a swift difference may indicate manual changing of a physical positioning of the cover (18).

### Claim 4 (depends on 1)

A swimming-pool entrance detector (10a) according to claim 1, further comprising:
a lens (22), for directing said reflected optical rays (40a1) to said first optical sensor (30).

### Claim 5 (depends on 1)

A swimming-pool entrance detector (10a) according to claim 1, wherein said means (50) for disposing said swimming-pool entrance detector (10a) in water above the ground (56) comprises a float (50).

### Claim 6 (depends on 1)

A swimming-pool entrance detector (10a) according to claim 1, further comprising:
an alarm unit (54), for alarming upon said indicating of said presence of the at least one opening (14a) in the cover (18).

### Claim 7 (depends on 1)

A swimming-pool entrance detector (10a) according to claim 1, further comprising:
another swimming-pool entrance detector (10b) according to claim 1, for disposing said swimming-pool entrance detectors (10a, 10b) distanced from one another,
thereby at least one of said swimming-pool entrance detectors (10a) does not face the at least one opening (14a).

### Claim 8 (depends on 1)

A swimming-pool entrance detector (10a) according to claim 1, further comprising:
an accelerometer (44), for detecting sudden movement,
thereby said detected sudden movement indicates entrance into the swimming pool (12).