Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
a technology of profile clamping and clamping rod, which is applied in the direction of vehicle/pulley rope, mechanical apparatus, couplings, etc., can solve the problems of low stability of steel profile clamps at relatively high temperatures, loss of elasticity at high temperatures, and leakage of joints
Inactive Publication Date: 2003-01-09
ABB (SCHWEIZ) AG +1
View PDF3 Cites 9 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
These steel profile clamps are not stable at relatively high temperatures.
Alternatively, they have too high of a coefficient of thermal expansion 18.times.10.sup.-6 to 22.times.10.sup.-6 m / mK (for austenitic, creep-resistant steels), which causes loss of elasticity at high temperatures and, thus, leakages in the joint.
Thus, the known profile clamps, which are made of ferritic or pure austenitic steel, are not suited to join the housing or other components of turbo chargers because the joint would leak at temperatures up to 750.degree. C. due to the excessively high coefficients of thermal expansion of the conventional clamp material.
Leaking joints will, among other things, lead to a substantial loss of output from the turbochargers.
In addition, a leaking or loosening connection constitutes a security risk, because turbochargers that have been assembled with these clamps could burst as a result of the loose connection, thereby increasing the risk of injury.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] Referring now to FIGS. 1-3, a profile clamp according to the present invention is illustrated. The profile clamp includes two approximately semicircular clamping bands 1, four bolts 2, 3, two clamping bolts 4, two plain washers 5, two approximately semicircular ring segments 6 and a plurality of reinforcements, which are preferably in the form of sheet metal strips 8. Sheet metal strips 8 are distributed over the circumference of the clamp on both sides of the circular ring segments 6. Each clamping band 1 has end sections that are bent radially outwardly and back to form loops 9. The ends of the clamping band 1 are welded by, for example, projection welds 11, to the clamping band 1 to maintain the shape of the loops 9, 10. One bolt 2, 3 is placed within each loop 9, 10. Each loop 9, 10 has a slit extending around a major portion of the respective bolts 2, 3. One of the headed clamping bolts 4 has its shaft extend through the slits within the loops 9, 10. The shaft of bolt 4 ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Property
Measurement
Unit
temperature
aaaaa
aaaaa
temperature
aaaaa
aaaaa
temperatures
aaaaa
aaaaa
Login to view more
Abstract
A steel profile clamp is used to join flanged component parts. The profile clamp has at least partially conical side walls that are bent radially inwardly. The profile clamp has welding joints to maintain the shape of the clamp. The steel is martensitic for increased load-carrying capacity of the joint. The steel material, in an ambient temperature range of 20° C. to 750° C., has a coefficient of thermal expansion that is at least 0.3x10-6 m/mK lower than that of the coefficient of thermal expansion of a ferritic casting material. The method for manufacturing the profile clamp includes prequenching and tempering the material of the profile clamp when it is in the form of a strip. After forming and welding the profile clamp, the weld is subject to induction tempering.
Description
[0001] This is a continuation-in-part application of U.S. Ser. No. 10 / 141,509, filed on May 7, 2002, now pending which is a continuation of U.S. Ser. No.: 09 / 696,650, filed on Oct. 25, 2000, now U.S. Pat. No. 6,383,315, which is a divisional of U.S. Ser. No: 09 / 226,184, filed on Jan. 5, 1999, now abandoned.[0002] 1. Field of the Invention[0003] The present invention relates to a profile clamp and a method for manufacturing the profile clamp. More specifically, the present invention relates to a profile clamp, having conical side walls that are bent radially inwardly, for connecting components that have flanges at their respective ends.[0004] 2. Discussion of the Related Art[0005] Profile clamps, per s, are known, for example, from German Reference DE 30 38 491 C2, U.S. Pat. No. 3,498,649, U.S. Pat. No. 3,964,773, French Reference No. 1,016,629 and from the brochures "NORMA Conical Flange Joints", .COPYRGT. 1979 and 1988, "NORMA Profile Clamp with Conical Flange", .COPYRGT. November ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Applications(United States)
Login to view more