Patents
US 11946313 B2: Fenestration unit including slidable glass panels
- Granted
- 2024-04-02
- Filed
- 2021-09-03 application 17466523
- Type
- Utility · 23 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A fenestration unit includes a first glass unit, a first panel frame, a second glass unit, a second panel frame, a sill flashing, and a frame. The frame includes a header, jambs, and a frame sill including a first track and a second track. The first panel frame and the first glass unit are slidable along the first track when positioned in the frame. The second panel frame and the second glass unit are slidable along the second track when positioned in the frame. The sill flashing includes a base extending under the first and second tracks and a wall extending upward from the base to inhibit moisture intrusion through the fenestration unit. The frame sill is removable from the frame without disassembling the sill flashing, the jambs, and the header.
Source: PVGPATDIS, file of 2026-04-10 (ipg240402.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Quaker Window Products Co. 8 patents | US company or organization | Freeburg, MO | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| David Sperandio | Freeburg, MO | 4 | PVGPATDIS, file of 2026-04-10 | |
| David J. Harrell | Columbus, IN | 2 | PVGPATDIS, file of 2026-04-10 | |
| Kevin Blansett | Jefferson City, MO | 1 | PVGPATDIS, file of 2026-04-10 | |
| Curtis Weavers | Vienna, MO | 8 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E06B | Fixed or movable closures for openings in buildings, vehicles, fences or like enclosures in general, e.g. doors, windows, blinds, gates | E06B3/4636 | 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 |
|---|---|---|---|---|---|
| 2021-09-03 | Assignment Assignment of assignor's interest | SPERANDIO, DAVID signed 2021-08-31 HARRELL, DAVID signed 2021-08-31 BLANSETT, KEVIN signed 2021-09-01 WEAVERS, CURTIS signed 2021-09-01 | QUAKER WINDOW PRODUCTS CO. FREEBURG, MO | 57384/235 | 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.