Patents
US 12607424 B2: Last round hold open
- Granted
- 2026-04-21
- Filed
- 2024-06-17 application 18744997
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An assembly for holding a bolt of a firearm in an open position is disclosed. The assembly comprises a bolt catch pivotable about a first axis toward and away from a catching position. In the catching position, a portion of the bolt catch is within a path of travel of the bolt. A follower transfer adapter is pivotable about a second axis. The follower transfer adapter includes an engagement portion that is configured to engage a follower of a magazine. Optionally, the follower transfer adapter includes an overhang lip that extends transversely to the longitudinal axis of the firearm and into a path of travel of the follower to define the engagement portion. The engagement portion is positioned between the second axis and the bolt catch along the longitudinal axis of the firearm. A linkage transfers rotational movement of the follower transfer adapter to rotation of the bolt catch.
Source: PTBLXML, file of 2026-04-21 (ipgb20260421.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Smith & Wesson Inc. 182 patents | US company or organization | Maryville, TN | PTBLXML, file of 2026-04-21 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Simon M. Muska | Enfield, CT | PTBLXML, file of 2026-04-21 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F41A | Functional features or details common to both smallarms and ordnance, e.g. cannons; mountings for smallarms or ordnance | F41A3/70 | PTBLXML, file of 2026-04-21 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-01-29 | Name change Change of address | SMITH & WESSON INC. signed 2025-01-29 | SMITH & WESSON INC. MARYVILLE, TN | 70054/11 | PASDL, file of 2026-10-15 |
| 2025-01-09 | Security interest Security interest Security interest | ONKOS SURGICAL, INC. signed 2024-12-30 | HORIZON TECHNOLOGY FINANCE CORPORATION FARMINGTON, CT | 69857/887 | PASDL, file of 2026-10-15 |
| 2024-07-19 | Assignment Assignment of assignor's interest | MUSKA, SIMON M. signed 2024-07-11 | SMITH & WESSON INC. SPRINGFIELD, MA | 68028/831 | PASDL, file of 2026-10-15 |
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.