Patents
US 9046328 B2: Shot shells with performance-enhancing absorbers
- Granted
- 2015-06-02
- Filed
- 2012-12-06 application 13707430
- Type
- Utility · 21 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Shot shells with enhanced performance due to inclusion of an absorber between the shot wad and the shot payload. The absorber reduces the pressure within a shot gun's chamber during firing of the shell, such as by absorbing energy generated during the firing process, and may thereafter return some of the energy to the pellets as the absorber and pellets are propelled along the firearm's barrel. Accordingly, the absorber enables a shot shell to generate shot payload velocities that are greater than would be achieved without the absorber, typically at a lower internal chamber pressure. In some embodiments, the absorber has (1) a Young's Modulus of less than 2,000 psi (137.9 bar), (2) a compressive strength of at least 100 psi (6.9 bar) and/or less than 10,000 psi (689.5 bar), and/or (3) a tensile strength of at least 145 psi (10 bar) and/or less than 10,000 psi (689.5 bar).
Source: PVGPATDIS, file of 2026-04-10 (ipg150602.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Environ-Metal, Inc. 7 patents | US company or organization | Sweet Home, OR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Ralph Nauman | Albany, OR | 9 | PVGPATDIS, file of 2026-04-10 | |
| Michael Clifford Sorensen | Sweet Home, OR | 9 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F42B | Explosive charges, e.g. for blasting, fireworks, ammunition | F42B7/04 | 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 |
|---|---|---|---|---|---|
| 2024-11-27 | Release of security interest Release of security interest | CAPITAL ONE, NATIONAL ASSOCIATION signed 2024-11-27 | AMMUNITION OPERATIONS LLC ANOKA, MN BEE STINGER, LLC BOZEMAN, MT BELL SPORTS, INC. IRVINE,, CA BUSHNELL INC. BOZEMAN, MT BUSHNELL HOLDINGS, INC. BOZEMAN, MT C PREME LIMITED LLC IRVINE,, CA CAMELBAK PRODUCTS, LLC IRVINE,, CA EAGLE INDUSTRIES UNLIMITED, INC. VIRGINIA BEACH, VA FEDERAL CARTRIDGE COMPANY ANOKA, MN GOLD TIP, LLC BOZEMAN, MT LOGAN OUTDOOR PRODUCTS, LLC HYDE PARK, UT MICHAELS OF OREGON CO. BOZEMAN, MT MILLETT INDUSTRIES, INC. BOZEMAN, MT STONEY POINT PRODUCTS, INC. BOZEMAN, MT VISTA OUTDOOR OPERATIONS LLC ANOKA, MN | 69460/1 | PASDL, file of 2026-10-15 |
| 2024-04-01 | Release of security interest Termination and release of term loan intellectual property security agreement | JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT signed 2024-03-06 | AMMUNITION OPERATIONS LLC ANOKA, MN BELL SPORTS, INC. SCOTTS VALLEY, CA BUSHNELL HOLDINGS, INC. OVERLAND PARK, KS BUSHNELL INC. OVERLAND PARK, KS C PREME LIMITED LLC CARSON, CA CAMELBAK PRODUCTS, LLC PETALUMA, CA EAGLE INDUSTRIES UNLIMITED, INC. VIRGINIA BEACH, VA FEDERAL CARTRIDGE COMPANY ANOKA, MN GOLD TIP, LLC FLORA, MS LOGAN OUTDOOR PRODUCTS, LLC HYDE PARK, UT MICHAELS OF OREGON CO. OVERLAND PARK, KS MILLETT INDUSTRIES, INC. OVERLAND PARK, KS STONE GLACIER, INC. BOZEMAN, MT VISTA OUTDOOR OPERATIONS LLC ANOKA, MN WAWGD NEWCO, LLC SAN DIEGO, CA FOX HEAD, INC. IRVINE, CA SIMMS FISHING PRODUCTS LLC BOZEMAN, MT | 66959/1 | PASDL, file of 2026-10-15 |
| 2022-08-05 | Security interest Security interest Security interest | AMMUNITION OPERATIONS LLC signed 2022-08-05 BEE STINGER, LLC signed 2022-08-05 BELL SPORTS, INC. signed 2022-08-05 BUSHNELL HOLDINGS, INC. signed 2022-08-05 BUSHNELL INC. signed 2022-08-05 C PREME LIMITED LLC signed 2022-08-05 CAMELBAK PRODUCTS, LLC signed 2022-08-05 EAGLE INDUSTRIES UNLIMITED, INC. signed 2022-08-05 FEDERAL CARTRIDGE COMPANY signed 2022-08-05 FOX HEAD, INC. signed 2022-08-05 GOLD TIP, LLC signed 2022-08-05 LOGAN OUTDOOR PRODUCTS, LLC signed 2022-08-05 MICHAELS OF OREGON CO. signed 2022-08-05 MILLETT INDUSTRIES signed 2022-08-05 NIGHT OPTICS USA, INC. signed 2022-08-05 NORTHSTAR OUTDOORS, LLC signed 2022-08-05 QUIETKAT, INC. signed 2022-08-05 STONE GLACIER, INC. signed 2022-08-05 STONEY POINT PRODUCTS, INC. signed 2022-08-05 VISTA OUTDOOR OPERATIONS LLC signed 2022-08-05 VISTA OUTDOOR SALES LLC signed 2022-08-05 WAWGD NEWCO, LLC signed 2022-08-05 VISTA OUTDOOR INC. signed 2022-08-05 | JPMORGAN CHASE BANK, N.A., AS THE ADMINISTRATIVE AGENT CHICAGO, IL | 61521/747 | PASDL, file of 2026-10-15 |
| 2021-04-01 | Security interest Security interest Abl intellectual property security agreement | AMMUNITION OPERATIONS LLC signed 2021-03-31 BEE STINGER, LLC signed 2021-03-31 BELL SPORTS, INC. signed 2021-03-31 BUSHNELL HOLDINGS, INC. signed 2021-03-31 BUSHNELL INC. signed 2021-03-31 C PREME LIMITED LLC signed 2021-03-31 CAMELBAK PRODUCTS, LLC signed 2021-03-31 EAGLE INDUSTRIES UNLIMITED, INC. signed 2021-03-31 FEDERAL CARTRIDGE COMPANY signed 2021-03-31 GOLD TIP, LLC signed 2021-03-31 LOGAN OUTDOOR PRODUCTS, LLC signed 2021-03-31 MICHAELS OF OREGON CO. signed 2021-03-31 MILLETT INDUSTRIES signed 2021-03-31 NIGHT OPTICS USA, INC. signed 2021-03-31 NORTHSTAR OUTDOORS, LLC signed 2021-03-31 STONEY POINT PRODUCTS INC. signed 2021-03-31 VISTA OUTDOOR INC. signed 2021-03-31 VISTA OUTDOOR OPERATIONS LLC signed 2021-03-31 | CAPITAL ONE, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT BETHESDA, MD | 56033/349 | PASDL, file of 2026-10-15 |
| 2021-03-23 | Assignment Assignment of assignor's interest | ENVIRON-METAL, INC. signed 2021-01-31 HEVI-SHOT EXPORTING, INC. signed 2021-01-31 | FEDERAL CARTRIDGE COMPANY ANOKA, MN | 55684/869 | PASDL, file of 2026-10-15 |
| 2012-12-12 | Assignment Assignment of assignor's interest | SORENSEN, CLIFFORD signed 2012-12-04 NAUMAN, RALPH signed 2012-12-06 | ENVIRON-METAL, INC. SWEET HOME, OR | 29487/353 | 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.