Patents
US 10487578 B2: Ladders, rung assemblies for ladders and related methods
- Granted
- 2019-11-26
- Filed
- 2015-09-10 application 14849917
- Type
- Utility · 12 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Ladders and ladder components are provided including a rung assembly that provides an alert to a user of the ladder that they are standing on a particular rung or step. In one example, the lower most rung or step of a ladder includes a rung assembly having an alert mechanism. The alert mechanism may provide an audible and/or other sensory alert to a user when they step on the rung assembly so that the user recognizes their position relative to the ground or supporting surface. In one embodiment, the rung assembly is configured such that a front edge remains in a constant or fixed position relative to the rails to which it is coupled so that a user can rely on a fixed or constant position of the front edge of the assembly when climbing or descending the ladder.
Source: PVGPATDIS, file of 2026-04-10 (ipg191126.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| WING ENTERPRISES, INCORPORATED 51 patents | US company or organization | Springville, UT | WING ENTERPRISES INC State business registration FUZZY medium confidence: same name (legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Christian Smith | Highland, UT | 5 | PVGPATDIS, file of 2026-04-10 | |
| Benjamin L. Cook | Provo, UT | 21 | PVGPATDIS, file of 2026-04-10 | |
| Sean R. Peterson | Payson, UT | 44 | PVGPATDIS, file of 2026-04-10 | |
| Brian B. Russell | Saratoga Springs, UT | 61 | PVGPATDIS, file of 2026-04-10 | |
| N. Ryan Moss | Mapleton, UT | 85 | PVGPATDIS, file of 2026-04-10 | |
| Bryan Wright | Highland, UT | 10 | PVGPATDIS, file of 2026-04-10 | |
| Gary M. Jonas | Springville, UT | 31 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| E06C | Ladders | E06C7/003 | 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 |
|---|---|---|---|---|---|
| 2021-02-02 | Security interest Security interest Security interest | LITTLE GIANT LADDER SYSTEMS, LLC signed 2020-12-28 | PNC BANK, NATIONAL ASSOCIATION, AS AGENT PITTSBURGH, PA | 55196/135 | PASDL, file of 2026-10-15 |
| 2021-01-12 | Correction Conversion | WING ENTERPRISES, INCORPORATED signed 2020-12-16 | LITTLE GIANT LADDER SYSTEMS, LLC SPRINGVILLE, UT | 55647/194 | PASDL, file of 2026-10-15 |
| 2017-02-01 | Assignment Assignment of assignor's interest | SMITH, CHRISTIAN signed 2017-01-31 COOK, BENJAMIN signed 2016-05-12 PETERSON, SEAN signed 2016-05-12 RUSSELL, BRIAN signed 2016-05-12 MOSS, N. RYAN signed 2016-05-12 WRIGHT, BRYAN signed 2016-05-12 JONAS, GARY signed 2016-05-12 | WING ENTERPRISES, INCORPORATED SPRINGVILLE, UT | 41144/216 | 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.