Patents
US 8789566 B2: Various improvements to stump cutting tool discs
- Granted
- 2014-07-29
- Filed
- 2010-03-02 application 12716063
- Type
- Utility · 9 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The present invention is generally directed to a grinder tool preferably having one or more of the following aspects or features: (i) some, preferably most, of the footprint of its bit being shielded by the disc; (ii) the peripheral edge of the disc is at least partially covered by a rock stop hard surface layer; (iii) non-rigid mounting hardware structured to provide a non-rigid mechanical connection between the well and the bit sub-assembly (for example, the non-rigid mounting hardware may include: a rubber isolator; a mesh isolator; and/or a fluid filled isolator); (iv) a stump grinding tool rotating disc assembly having at least one first type bit sub-assembly (including a bit) and at least one second type bit sub-assembly (including a bit), where: (a) the first type bit sub-assembly has a first bit footprint geometry, (b) the first type bit sub-assembly has a first bit footprint geometry, and (c) the first bit footprint geometry is different than the second bit footprint geometry; (v) a rotating disc assembly includes a disc that includes multiple guide protrusions extending axially from both axial ends of the disc around an angular range leading the angular position of each bit sub-assembly; (vi) a rotating disc assembly having rollers built into the peripheral edge of the disc; and/or (vii) disc assembly with a bit holder member that extends over a portion of the opposite axial faces of the disc.
Source: PVGPATDIS, file of 2026-04-10 (ipg140729.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Leonardi Manufacturing Co., Inc. 16 patents | US company or organization | Weedsport, NY | LEONARDI MANUFACTURING CO., INC. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Joseph A. Leonardi | Auburn, NY | 16 | PVGPATDIS, file of 2026-04-10 | |
| Bruce C. Jordan | Auburn, NY | 16 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A01G | Horticulture; cultivation of vegetables, flowers, rice, fruit, vines, hops or seaweed; forestry; watering | A01G23/067 | PVGPATDIS, file of 2026-04-10 |
| B02C | Crushing, pulverising, or disintegrating in general; milling grain | B02C7/12 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2010-03-02 | Assignment Assignment of assignor's interest | JORDAN, BRUCE C. signed 2010-03-02 LEONARDI, JOSEPH A. signed 2010-03-02 | LEONARDI MANUFACTURING CO. INC. WEEDSPORT, NY | 24017/57 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.