Patents
US 8479568 B1: Apparatus for measuring variations in flatness
- Granted
- 2013-07-09
- Filed
- 2011-03-07 application 13041682
- Type
- Utility · 5 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An apparatus for measuring variations in the flatness of an Almen strip holding surface includes a gaging block having opposing parallel surfaces defining an aperture extending between said parallel surfaces and substantially conforming to the size of the holding surface. A plunger is mounted in a cross member which extends across the aperture and is moved along opposite sides thereof. A dial indicator responds to displacement of the aperture to permit detection of any variation in flatness as the plunger is moved over the holding surface and along and between the side and end edges thereof. Placement of the Almen strip holding screws is verified to be in tolerance by the gaging block in that the gaging block cannot be mounted on the holding surface if the distance between the openings is out of tolerance.
Source: PVGPATDIS, file of 2026-04-10 (ipg130709.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Electronics Inc. 31 patents | US company or organization | Mishawaka, IN | PVGPATDIS, file of 2026-04-10 | |
| METAL IMPROVEMENT COMPANY, LLC 12 patents | US company or organization | Paramus, NJ | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jack Champaigne | Mishawaka, IN | 13 | PVGPATDIS, file of 2026-04-10 | |
| David B. Francis | West Chester, PA | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01B | Measuring length, thickness or similar linear dimensions; measuring angles; measuring areas; measuring irregularities of surfaces or contours | G01B3/22 | PVGPATDIS, file of 2026-04-10 |
| C21D | Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making metal malleable, e.g. by decarburisation or tempering | C21D7/06 | 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 |
|---|---|---|---|---|---|
| 2011-08-16 | Assignment Assignment of assignor's interest | CHAMPAIGNE, JACK signed 2011-07-20 FRANCIS, DAVID signed 2011-07-25 | ELECTRONICS INC. MISHAWAKA, IN METAL IMPROVEMENT COMPANY, LLC PARAMUS, NJ | 26759/470 | 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.