Torsional spring
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United States of America Patent
Stats
-
Jun 4, 1991
Grant Date -
N/A
app pub date -
Jan 26, 1990
filing date -
Jun 4, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A torsional spring to be secured non-rotating to mutually rotating components at each end. At least two thin-walled piping sections are positioned loosely coaxial and secured together non-rotating at one end, accordingly functioning as a series of resilient sections. There are means of securing them non-rotating to the mutually rotating components at the other end. The spring especially constitutes a torsion bar for a connecting rod that pivots in a bearing mounted stationary in a vehicle and positions either a running wheel or a caterpillar cogwheel at the end remote from the bearing. The piping sections are integrated into each other such that one merges directly into the other at the end where they are secured together non-rotating in a turnback that represents a transition point. The piping sections are preferably made of fiber-reinforced plastic and may have several layers.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
| Patent Owner | Address | |
|---|---|---|
| IBP PIETZSCH GMBH | HERTZSTRASSE 32-34 D-7505 ETTLINGEN |
International Classification(s)
Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| Hartmann, Rudolf | Karlsbad-Auerbach, DE | 31 | 298 |
| Schroder, Bernd | Bietigheim, DE | 10 | 128 |
| Thate, Helmut | Neustadt, DE | 2 | 26 |
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| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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