Method and parts for making a tubular workpiece, in particular a built-up camshaft
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 15, 2016
Grant Date -
Nov 21, 2013
app pub date -
Nov 17, 2011
filing date -
Nov 19, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a method for producing a tubular structural part by means of hydroforming. An assigned end of a supporting tube (1) is inserted into an opening in an end piece (2) and then widened by a pressurized fluid being applied to it and is connected to the end piece (2) with a press fit. The opening (9) has a first portion (10a) with a first inner cross section, which is greater than the outer cross section of the assigned end of the supporting tube (1). According to the invention, the first portion (10a) is adjoined by a second portion (10b), in a step-shaped manner so as to form an edge (11). The inner cross section of the second portion (10b) is smaller than the outer cross section of the assigned end of the supporting tube (1). In the method according to the invention, the supporting tube (1) is first inserted with its corresponding end into the first portion (10a), before the edge (11) cuts into the material of the supporting tube (1) in a further pushing-in movement.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2011 Application Filing Year
- F01L Class
- 346 Applications Filed
- 298 Patents Issued To-Date
- 86.13 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F01L Class
- 0 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 15, 2027 |
