IP Library › Granted Patent US 12,389,824
Granted Patent B2
US 12,389,824 · App. 18/516,317 · Granted Aug 19, 2025

Speed control assembly

Inventors: James C. Ferrell (Elberton, GA); William E. Colber (Lavonia, GA); Dayu Feng (Seneca, SC)
Assignee: Techtronic Outdoor Products Technology Limited
A01D34/824A01D34/6806A01D34/78A01D69/02A01D2034/6843A01D2101/00
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Quick Facts
Patent No.
US 12,389,824
App. No.
18/516,317
Granted
Aug 19, 2025
Kind
B2
Abstract

A mower including a handle assembly and a grip coupled to the handle assembly. The handle assembly includes a cross member. The grip is moveable longitudinally relative to the cross member. The mower also includes a sensor operable to generate an output signal based on a position of the grip relative to the cross member, and a drive assembly configured to operate based on the output signal.

Claims (28)

1. A mower comprising:

a handle assembly;

a grip coupled to the handle assembly, the grip moveable longitudinally relative to a portion of the handle assembly external to the grip;

a sensor operable to generate an output signal based on a position of the grip relative to the portion of the handle assembly external to the grip; and

a drive assembly configured to operate based on the output signal.

2. The mower of claim 1 , further comprising a controller configured to receive the output signal and control the drive assembly based on the output signal.

3. The mower of claim 1 , wherein the sensor is at least one selected from a group consisting of a pressure sensor and a force-sensitive sensor.

4. The mower of claim 1 , wherein the grip includes a gripping portion, a first grip leg, and a second grip leg.

5. The mower of claim 4 , wherein the first grip leg and the second grip leg are received by the handle assembly.

6. The mower of claim 1 , wherein the portion of the handle assembly is parallel to the grip.

7. The mower of claim 1 , wherein the output signal varies proportionally to a magnitude of displacement of the grip relative to the portion of the handle assembly.

8. The mower of claim 1 , wherein the sensor is a transducer.

9. The mower of claim 1 , further comprising a wheel coupled to the drive assembly, wherein the drive assembly drives the wheel.

10. The mower of claim 1 , wherein the drive assembly includes an electric motor.

11. The mower of claim 1 , wherein a first portion of the sensor is coupled to the grip and moves with the grip as the grip moves relative to the handle assembly; and wherein a second portion of the sensor is fixed with respect to the handle assembly.

12. The mower of claim 1 , wherein the grip translates along a longitudinal axis of the handle assembly.

13. The mower of claim 1 , further comprising a biasing member positioned between the grip and the handle assembly.

14. The mower of claim 1 , further comprising a cutting element rotationally supported on a mower deck.

15. A mower comprising:

a handle assembly;

a grip partially received within the handle assembly and movable relative to a portion of the handle assembly external to the grip;

a sensor configured to generate an output signal based on a position of the grip with respect to the portion of the handle assembly external to the grip; and

a drive assembly configured to operate based on the output signal.

16. The mower of claim 15 , wherein the sensor is a force-sensitive sensor operable to measure an amount of force applied to the grip by a user.

17. The mower of claim 15 , wherein the handle assembly includes a first upper arm coupled to a first housing and a second upper arm coupled to a second housing, and the grip is partially received within the first housing and the second housing.

18. The mower of claim 17 , further comprising a lower arm pivotally coupled to a bracket attached to a deck of the mower and wherein a lower end of at least one selected from a group consisting of the first upper arm and the second upper arm is telescopically received by an upper end of the lower arm.

19. The mower of claim 17 , wherein the grip translates along a longitudinal axis defined by at least one selected from a group consisting of the first upper arm and the second upper arm.

20. The mower of claim 15 , further comprising a controller configured to receive the output signal and control the drive assembly based on the output signal.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2023
From: PERRELL, JAMES C.; COLBER, WILLIAM E.; FENG, DAYU
To: TTI (MACAO COMMERCIAL OFFSHORE) LIMITED
Reel/Frame 065945/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 22, 2023
From: TTI (MACAO COMMERCIAL OFFSHORE) LIMITED
To: TECHTRONIC OUTDOOR PRODUCTS TECHNOLOGY LIMITED
Reel/Frame 066123/0324 →
Continuity (4)
Continuation 18188036 · Mar 22, 2023
Continuation 16624200
Provisional Application 62524179 · Jun 23, 2017
Related Publication 20240081181A1 · Mar 14, 2024
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