Patents
US 9441690 B2: Air cooled piston cap assembly
- Granted
- 2016-09-13
- Filed
- 2012-04-12 application 14111711
- Type
- Utility · 8 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An air-cooled piston cap assembly is provided for use in a disc brake caliper that includes a piston cap, and a piston body having a proximal end and a distal end which is slidably movable within a caliper bore along an axis. The piston cap includes a retention portion mounted within the distal end of the piston body, a contact portion located opposite from the retention portion that contacts a brake pad assembly, and an intermediate portion connecting the retention portion with the contact portion. The outer surface of the intermediate portion defines an extended heat exchange path between the contact portion and the retention portion, and may for example hourglass-shaped. An air gap is provided between a top edge of the piston body and an undersurface of the contact portion of the piston cap that allows air to circulate over the extended heat transfer path defined by the outer surface of the contact portion and intermediate portion to cool the cap from frictional heat generated during braking. The contact portion of the piston cap is shaped such that only a part of the surface of the contact portion contacts the brake pad assembly to advantageously reduce both conductive heat transfer and noise during a braking operation.
Source: PVGPATDIS, file of 2026-04-10 (ipg160913.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Performance Friction Corporation 16 patents | US company or organization | Clover, SC | PERFORMANCE FRICTION CORPORATION State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Donald L. Burgoon | Gastonia, NC | 11 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F16D | Couplings for transmitting rotation; clutches; brakes | F16D65/18 | 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 |
|---|---|---|---|---|---|
| 2018-12-28 | Security interest Security interest Patent and trademark security agreement | PERFORMANCE FRICTION CORPORATION signed 2018-12-27 | WHITE OAK COMMERCIAL FINANCE, LLC NEW YORK, NY | 47990/349 | ECORSEXC, file of 2026-09-25 |
| 2013-10-14 | Assignment Assignment of assignor's interest | BURGOON, DONALD L. signed 2013-10-14 | PERFORMANCE FRICTION CORPORATION CLOVER, SC | 31401/349 | 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.