Patents
US 9907226 B2: Cross flow horizontal rotary lawn mower with replaceable blade cartridges
- Granted
- 2018-03-06
- Filed
- 2016-11-14 application 15350909
- Type
- Utility · 10 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A lawnmower uses thin, replaceable blades with a hardened cutting edge and a cross-section defining an airfoil retained in cartridges that are inserted and removed from rotors in a blade assembly at need. The cartridges comprise a blade and rotor interlocking elements affixed to the blade, each rotor interlocking element corresponding to one rotor in the blade assembly. Each rotor and rotor interlocking element includes features that allow the two to be securely engaged so that the rotors may be spun quickly in a mower blade assembly to cut grass.
Source: PVGPATDIS, file of 2026-04-10 (ipg180306.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| HRM Enterprises, Inc. 8 patents | US company or organization | Westerly, RI | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Richard Zerbarini | Westerly, RI | 8 | PVGPATDIS, file of 2026-04-10 | |
| Paul Zerbarini | Westerly, RI | 5 | PVGPATDIS, file of 2026-04-10 | |
| Robert Zerbarini | Westerly, RI | 4 | PVGPATDIS, file of 2026-04-10 | |
| Dan Meyer | Westerly, RI | 16 | PVGPATDIS, file of 2026-04-10 | |
| David Jalbert | West Greenwich, RI | 33 | PVGPATDIS, file of 2026-04-10 | |
| Sean Patrick Suiter | Omaha, NE | 29 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A01D | Harvesting; mowing | A01D34/62 | 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 |
|---|---|---|---|---|---|
| 2017-06-12 | Assignment Assignment of assignor's interest | SUITER, SEAN PATRICK signed 2016-11-14 ZERBARINI, PAUL signed 2016-12-05 ZERBARINI, RICHARD signed 2016-12-05 ZERBARINI, ROBERT signed 2016-12-05 JALBERT, DAVID signed 2016-12-17 MEYER, DAN signed 2017-02-23 | HRM ENTERPRISES, INC. WESTERLY, RI | 42678/826 | 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.