Rotating cooling wheel and method of manufacturing the same and drum brake
US6264012A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2065/1332
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An outer surface 1d of the brake drum 1 has seven thick portions (10B.sub.1 to 10B.sub.7) each having equal mass and separated at an equal distance in the circumferential direction from a reference line which is an arbitrary diameter, six thick portions (10C.sub.1 to 10C.sub.6) each having equal mass and separated at an equal distance in the circumferential direction from the same reference line, five thick portions (10D.sub.1 to 10D.sub.5) each having equal mass and separated at an equal distance in the circumferential direction from the same reference line, and four thick portions (10E.sub.1 to 10E.sub.4) each having equal mass and separated at an equal distance in the circumferential direction from the same reference line. Accordingly, the outer surface (1d) of the brake drum (1) has a plurality of thick portions which can be classified into four groups (10B.sub.1 to 10B.sub.7, 10C.sub.1 to 10C.sub.6, 10D.sub.1 to 10D.sub.5, and 10E.sub.1 to 10E.sub.4), each group having equal mass. The thick portions in respective groups are arranged at an equal distance in the circumferential direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.