IP Library › Granted Patent US 12,446,997
Granted Patent B1
US 12,446,997 · App. 18/932,392 · Granted Oct 21, 2025

Handle for an oral health device

Inventors: Machiko Taylor (Alameda, CA); Bruce Michael Schena (Menlo Park, CA); Brian Hachtmann (Mountain View, CA)
Assignee: Fresh Health Inc.
A61C17/0202A61C17/0211
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,446,997
App. No.
18/932,392
Granted
Oct 21, 2025
Kind
B1
Abstract

A handle for an oral health device is disclosed. The handle includes a stationary body, a hydraulic turbine coupled to the stationary body, a manifold selector disc coupled to the hydraulic turbine, and a manifold disc that includes a plurality of holes. The stationary body includes a plurality of vanes. The hydraulic turbine includes a plurality of blades. The manifold selector disc is configured to rotate when the hydraulic turbine rotates. The manifold selector disc includes a gateway. The manifold selector disc is configured to fully expose, as the hydraulic turbine rotates, a first hole of the plurality of holes or partially expose a first hole of the plurality of holes and a second hole of the plurality of holes.

Claims (32)

1. A handle for an oral health device, comprising:

a stationary body that includes a plurality of vanes;

a hydraulic turbine coupled to the stationary body, wherein the stationary body is coupled to a first side of the hydraulic turbine, wherein a shape of the plurality of vanes is configured to cause the hydraulic turbine to move in a particular direction;

a manifold selector disc coupled to a second side of the hydraulic turbine, wherein the manifold selector disc is configured to rotate when the hydraulic turbine rotates, wherein the manifold selector disc includes a gateway; and

a manifold disc coupled to the hydraulic turbine, wherein the manifold disc includes a plurality of holes, wherein each hole of the plurality of holes is fluidly connected to a respective manifold of a plurality of manifolds associated with an oral insert.

2. The handle of claim 1 , wherein, as the hydraulic turbine rotates, the manifold selector disc is configured to selectively expose, a first hole of the plurality of holes.

3. The handle of claim 2 , wherein the first hole of the plurality of holes is fully exposed.

4. The handle of claim 3 , wherein, as the hydraulic turbine rotates, the first hole changes from a first state of being fully exposed to a second state of being partially exposed and a second hole of the plurality of holes changes from being in a third state of not being exposed to the second state of being partially exposed.

5. The handle of claim 1 , wherein the stationary body includes a first opening.

6. The handle of claim 5 , wherein the first opening of the stationary body is coupled to a fluid source via a fluid conduit.

7. The handle of claim 6 , wherein the stationary body includes a cone situated opposite to the first opening.

8. The handle of claim 7 , wherein a proximal end of a vane of the plurality of vanes is attached to a surface of the cone.

9. The handle of claim 7 , wherein a distal end of a vane of the plurality of vanes is attached to an inner surface of an exterior body of the stationary body.

10. The handle of claim 7 , wherein a surface of the cone includes a second opening.

11. The handle of claim 10 , wherein the hydraulic turbine includes an elongated member that is configured to fit in the second opening.

12. The handle of claim 1 , wherein the hydraulic turbine further includes an external cylindrical structure and an internal cylindrical body.

13. The handle of claim 12 , wherein a proximal end of a blade of the hydraulic turbine is attached to a surface of the internal cylindrical body.

14. The handle of claim 12 , wherein a distal end of a blade of the hydraulic turbine is attached to an inner surface of the external cylindrical structure of the hydraulic turbine.

15. The handle of claim 1 , wherein the hydraulic turbine includes a key and the manifold selector disc includes an opening.

16. The handle of claim 15 , wherein the key is configured to fit into the opening of the manifold selector disc.

17. The handle of claim 1 , wherein the hydraulic turbine includes an elongated member and the manifold disc includes an alignment body.

18. The handle of claim 17 , wherein the alignment body includes an opening, wherein the elongated member is configured to fit through the alignment body opening.

19. The handle of claim 18 , wherein the handle further includes a low friction material situated between the manifold selector disc and the manifold disc.

20. The handle of claim 19 , wherein the low friction material includes a corresponding opening.

21. The handle of claim 20 , wherein the elongated member is configured to fit through the corresponding opening associated with the low friction material and the alignment body opening.

22. The handle of claim 21 , wherein the alignment body is configured to fit through the corresponding opening associated with the low friction material.

23. The handle of claim 1 , wherein a hole associated with the plurality of holes is associated with a manifold of the plurality of manifolds included in the oral insert coupled to the handle.

24. The handle of claim 1 , wherein the hydraulic turbine is a Pelton wheel, a piston motor, or axial turbine.

25. The handle of claim 1 , wherein the hydraulic turbine is coupled to a magnet.

26. The handle of claim 25 , wherein the magnet is utilized to determine whether the hydraulic turbine has entered into a stalled state.

27. The handle of claim 26 , wherein the hydraulic turbine includes a coil on an outer portion of the hydraulic turbine and a combination of the coil and the magnet are utilized to reduce a speed associated with the hydraulic turbine.

28. The handle of claim 1 , wherein the handle is coupled to a base station that includes a sensor configured to detect when the hydraulic turbine has entered into a stalled state.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 4, 2025
From: TAYLOR, MACHIKO; SCHENA, BRUCE MICHAEL; HACHTMANN, BRIAN
To: FRESH HEALTH INC.
Reel/Frame 071319/0808 →
References Cited (13)
US 2492966A · Ckola · 1950 [cited by examiner]
US 2618161A · Mason · 1952 [cited by examiner]
US 3242346A · Skoubo · 1966 [cited by examiner]
US 4106501A · Ozbey · 1978 [cited by examiner]
US 4120602A · Megnint · 1978 [cited by examiner]
US 4289971A · Ueda · 1981 [cited by examiner]
US 4464580A · Miller · 1984 [cited by examiner]
US 9998046B2 · Perriere · 2018 [cited by examiner]
US 10595627B1 · Laurent · 2020 [cited by examiner]
US 20080136191A1 · Baarman · 2008 [cited by examiner]
US 20110290052A1 · Sappenfield · 2011 [cited by examiner]
US 20200253369A1 · De Gentile · 2020 [cited by examiner]
TW 202137948A · 2021 [cited by examiner]