String trimmer head and spool
US-2021378173-A1 · Dec 9, 2021 · US
by triggered line feedout, e.g. bump-feeding
by triggered line feedout, e.g. bump-feeding · Cooperative Patent Classification (CPC)
Agriculture, food, personal care, health, and life sciences.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | A01D34/4163 |
| Official title | {by triggered line feedout, e.g. bump-feeding} |
| Display label | by triggered line feedout, e.g. bump-feeding |
| Total patents | 100 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 4 |
| 2017 | 7 |
| 2018 | 11 |
| 2019 | 12 |
| 2020 | 10 |
| 2021 | 15 |
| 2022 | 7 |
| 2023 | 10 |
| 2024 | 5 |
| 2025 | 8 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Grass trimming head and grass trimmer having the same
US-2021368676-A1 · Dec 2, 2021 · US
Grass trimmer and control method of grass trimmer
US-2021321560-A1 · Oct 21, 2021 · US
String trimmer head and spool
US-11122735-B2 · Sep 21, 2021 · US
Trimmer Head with Residual Trimmer Line Indicator
US-2021185909-A1 · Jun 24, 2021 · US
Trimmer Line Spool for a Trimmer Head
US-2021168997-A1 · Jun 10, 2021 · US
Grass cutting head and grass trimmer including the same
US-2021137004-A1 · May 13, 2021 · US
Trimmer head
US-10939614-B2 · Mar 9, 2021 · US
Grass trimmer and cord delivering method of grass trimmer
US-10939613-B2 · Mar 9, 2021 · US
Trimmer Line Cutting Head for Mounting on a Drive Shaft of a Trimmer
US-2021059115-A1 · Mar 4, 2021 · US
Automatic line feed for trimmer
US-10918015-B2 · Feb 16, 2021 · US
Grass trimming head and grass trimmer having the same
US-2021022287-A1 · Jan 28, 2021 · US
Grass trimmer
US-2021015035-A1 · Jan 21, 2021 · US
Quick loading trimmer head and trimmer thereto
US-10874046-B2 · Dec 29, 2020 · US
Grass trimming head and grass trimmer having the same
US-10856466-B2 · Dec 8, 2020 · US
Grass trimmer
US-10849268-B2 · Dec 1, 2020 · US
Trimmer Head With Improved Line Release Feature
US-2020315089-A1 · Oct 8, 2020 · US
Trimmer head and grass trimmer
US-2020236848-A1 · Jul 30, 2020 · US
Grass trimming head and grass trimmer having the same
US-2020170182-A1 · Jun 4, 2020 · US
Cutting head of a grass trimmer
US-2020154634-A1 · May 21, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC A01D34/4163?
- CPC A01D34/4163 is the Cooperative Patent Classification code for “by triggered line feedout, e.g. bump-feeding.”
- How many patents are filed under CPC A01D34/4163 (by triggered line feedout, e.g. bump-feeding)?
- Our database includes 100 publications tagged with this CPC code.
- Is patent activity under CPC A01D34/4163 growing?
- Publication counts under this code: 5 in 2024 vs 8 in 2025 (latest complete years).