41 |
Multiple-strand torsion spring |
US274336 |
1988-11-21 |
US4889327A |
1989-12-26 |
Peter G. Seyler |
A helical spring composed of a plurality of parallel, coiled strands of spring wire with such strands being unconnected along most of their length but being joined together at least at one end of the spring. In a preferred embodiment, such strands or wires are welded together at opposite ends of the spring. Such a spring is formed by incrementally advancing a plurality of wires in contiguous, parallel relation towards a wire-coiling station and then, at the termination of a coiling step, interrupting such advancement to sever the wires through, or immediately adjacent to, a first welded zone while at the same time welding such wires together in a second zone spaced a precise distance from the point of the severing operation. |
42 |
Fiber-reinforced resin coil spring and method of manufacturing the same |
US337728 |
1982-01-07 |
US4473217A |
1984-09-25 |
Kenji Hashimoto |
A fiber-reinforced resin coil spring impregnated with thermosetting resin which comprises a resin-impregnated and twisted rod-shaped fiber bundle formed by bundling a plurality of fiber wire blanks made of glass or carbon, immersing the fiber bundle and twisting the rod-shaped fiber bundle in a thermosetting resin, and forming coiled twisted rod-shaped fiber bundle from the resin-immersed and twisted rod-shaped fiber bundle. Thus, the resin coil spring incorporates large elastic energy and high load withstanding capability due to the twisting of the fiber bundle. |
43 |
Apparatus for producing a continuous flexible tubular conduit |
US857739 |
1977-12-05 |
US4135869A |
1979-01-23 |
Philip K. Loyer |
Apparatus for producing a continuous flexible tubular conduit having a plurality of helically wound reinforcing-electrical wires is provided wherein the apparatus has means for forming a plurality of wires into a corresponding plurality of substantially identical continuous non-rotating helical coils without entanglement of such wires and an extruder head for extruding a polymeric tube around the coils with the coil turns coaxially aligned and alternately arranged to complete the tubular conduit. |
44 |
Methods of manufacturing dual interlocked safety spring assemblies |
US51825174 |
1974-10-29 |
US3905403A |
1975-09-16 |
SMITH WOODROW WILSON; YOUNGQUIST DAVID JACK |
Methods for manufacturing a dual interlocked safety spring assembly for minimizing the dangers resulting from spring breakage, in which two or more springs operating primarily in parallel are interlocking along their length so that upon the breakage of one of the two springs at a point, the broken spring will interlock with the intact spring and still contribute significantly to the magnitude of the remaining total spring force, and methods and machines for the manufacture of such springs.
|
45 |
Twisted spring elements |
US60177656 |
1956-08-02 |
US2918271A |
1959-12-22 |
CRITES NELSON A |
|
46 |
Spring |
US45521621 |
1921-03-24 |
US1544237A |
1925-06-30 |
FRANCIS KARR |
|
47 |
Method of winding toroidal coils |
US69706324 |
1924-03-05 |
US1531681A |
1925-03-31 |
FRANK AUTY |
|
48 |
Compound-spring connection |
US50195921 |
1921-09-20 |
US1493179A |
1924-05-06 |
YOUNG LEONARD A; BACKUS HUBERT V |
|
49 |
Support for bed-netting. |
US1901056686 |
1901-04-20 |
US683344A |
1901-09-24 |
SIM FINLAY |
|
50 |
Improved railway-car spring |
US99475D |
|
US99475A |
1870-02-01 |
|
|
51 |
Multi-stranded coil spring |
US11699184 |
2007-01-29 |
US08099811B2 |
2012-01-24 |
Richard F. Gladney; Bernard W. Kuchel; Michael S. DeFranks |
A spring assembly including a helical coil formed from a multi-strand cord. |
52 |
Multi-stranded coil spring |
US10782050 |
2004-02-19 |
US07168117B2 |
2007-01-30 |
Richard F. Gladney; Bernhard W. Kuchel |
A spring assembly including a helical coil formed from a multi-strand cord. |
53 |
Stranded mattress spring |
US10371177 |
2003-02-19 |
US07047581B2 |
2006-05-23 |
Richard F. Gladney |
A mattress construction with a stranded wire spring is disclosed. The stranded wire spring can be designed with the same performance characteristic as a conventional single strand coil spring, but at a lower manufacturing and material cost. |
54 |
Stranded mattress spring |
US10371177 |
2003-02-19 |
US20040158929A1 |
2004-08-19 |
Richard
F.
Gladney |
A mattress construction with a stranded wire spring is disclosed. The stranded wire spring can be designed with the same performance characteristic as a conventional single strand coil spring, but at a lower manufacturing and material cost. |
55 |
Pavement drain |
US09843862 |
2001-04-30 |
US20020159833A1 |
2002-10-31 |
Nobuya
Nabeshima |
A pavement drain includes a spring coil strap formed in a continuous spiral fashion and composed of a plurality of linear bodies of synthetic resin that are arranged in parallel. The adjacent linear bodies are joined together at side parts thereof having a height at least one fourth the height of the linear bodies. |
56 |
Coil shaft and method for fabricating same |
US09808169 |
2001-03-15 |
US20010052721A1 |
2001-12-20 |
Toshizumi
Tanaka |
A coil shaft or tube to be fitted into a flexible sleeve to serve as a flexible rotation transmission shaft, containing a partially coarsely wound coil shaft formed by winding around a core a plural number of unit wires which are arranged in intimately parallel relation with each other in the fashion of a single flat metal strip, and extracting a dummy wire afterwards from a resulting tightly wound coil shaft to form coarsely wound portions where helices of certain adjacent unit wires spaced apart in the axial direction and in certain portions of the coil shaft. |
57 |
Multiple torsion spring and methods of use |
US09399966 |
1999-09-21 |
US06220586B1 |
2001-04-24 |
Robert J. Pavlin; Todd K. Watkins; Gary T. Wehnes; Curt A. Converse; James E. Adams |
A multiple torsion spring assembly according to the present invention may be provided with a coiled helical torsion spring. The spring has first and second end coils, and a plurality of intermediate coils between the first and second end coils. The first end coil inner diameter is less than the inner diameter of the intermediate coils. The second end coil inner diameter is less than the inner diameter of the first end coil. The spring may be used to control a throttle return of a throttle body. Methods of manufacturing spring assemblies are also disclosed. |
58 |
Multiple-strand torsion spring and method of forming the same |
US168377 |
1988-03-15 |
US4821390A |
1989-04-18 |
Peter G. Seyler |
A method of forming a helical spring composed of a plurality of parallel, coiled strands of spring wire with such strands being unconnected along most of their length but being joined together at least at one end of the spring. In a preferred embodiment, such strands or wires are welded together at opposite ends of the spring. Such a spring is formed by incrementally advancing a plurality of wires in contiguous, parallel relation towards a wire-coiling station and then, at the termination of a coiling step, interrupting such advancement to sever the wires through, or immediately adjacent to, a first welded zone while at the same time welding such wires together in a second zone spaced a precise distance from the point of the severing operation. |
59 |
Bedding and seating product having double twist coil spring and method
and apparatus for manufacturing the same |
US907675 |
1986-09-15 |
US4682394A |
1987-07-28 |
Thomas J. Wells; Angelo Serafini |
A bedding foundation box spring having novel double twist coil springs interconnecting a wooden base frame and a top wire grid. The coil springs each comprise a single length of wire having a middle section located in a diametral plane of one end convolution of the spring and a pair of spring arms coiled in the same rotational direction from opposite ends of the middle section. Each of the spring arms is formed into a helix of varying pitch which terminates in a free end of the spring arm. The free ends of the two spring arms of each coil are located on opposite sides of the end convolution of the coil and are secured to the wire grid. The novel coils are manufactured by inserting a straight length of wire through a stationary pair of forming dies and a mandrel located between the dies. With the middle of the straight length of wire located in the mandrel, the mandrel is then simultaneously rotated and moved axially while the ends of the length of wire are pulled through the stationary forming dies. |
60 |
Bedding and seating product having double twist coil spring and method
and apparatus for manufacturing the same |
US769947 |
1985-08-27 |
US4639957A |
1987-02-03 |
Thomas J. Wells; Angelo Serafini |
A bedding foundation box spring having novel double twist coil springs interconnecting a wooden base frame and a top wire grid. The coil springs each comprise a single length of wire having a middle section located in a diametral plane of one end convolution of the spring and a pair of spring arms coiled in the same rotational direction from opposite ends of the middle section. Each of the spring arms is formed into a helix of varying pitch which terminates in a free end of the spring arm. The free ends of the two spring arms of each coil are located on opposite sides of the end convolution of the coil and are secured to the wire grid. The novel coils are manufactured by inserting a straight length of wire through a stationary pair of forming dies and a mandrel located between the dies. With the middle of the straight length of wire located in the mandrel, the mandrel is then simultaneously rotated and moved axially while the ends of the length of wire are pulled through the stationary forming dies. |