US3123879A - Wedge anchor for tensioning and anchoring wires - Google Patents

Wedge anchor for tensioning and anchoring wires Download PDF

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US3123879A
US3123879A US3123879DA US3123879A US 3123879 A US3123879 A US 3123879A US 3123879D A US3123879D A US 3123879DA US 3123879 A US3123879 A US 3123879A
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wedges
opening
channels
wires
prestressing
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/44—Three or more members connected at single locus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/71—Rod side to plate or side
    • Y10T403/7129—Laterally spaced rods
    • Y10T403/7141—Plural channels in connector

Definitions

  • This invention comprises a novel and useful wedge anchor for tensioning and anchoring wires and more particularly relates to a means for post tensioning structures, and especially those of a concrete nature.
  • the principal object of this invention is to provide a means whereby prestressing wires may be effectively post tensioned and securely anchored under tension in a building structure.
  • a further object of the invention is to provide a means whereby a plurality of prestressing wires may be securely anchored and post tensioned in concrete members.
  • a further object of the invention is to provide a small compact anchoring means whereby a plurality of prestressing wires may be post tensioned and anchored as prestressing for various structural elements.
  • a still further object of the invention is to provide a means whereby a plurality of prestressing wires disposed in side-by-side arrangement may be securely anchored and post tensioned in building structures and wherein the loads applied to the prestressing wires will be effectively distributed between the same.
  • Yet another object of the invention is to provide a prestressing wire and anchor construction whereby a single anchor fitting and its locking means shall be effective for effectively anchoring and securing under tension at plurality of prestressing wires in which the number of wires is subject to variation and the arrangement of the wires is likewise variable.
  • A. further and specific object of the invention is to provide an anchoring means for the post tensioning of prestressing wires which shall effect an improved gripping action upon the wires, will maintain the wires in a spaced relation with respect to each other, and will have a positive gripping and non-slipping action upon the wires.
  • Still another object of the invention is to provide an apparatus whereby a plurality of prestressing wires may be selectively post tensioned and then securely anchored.
  • FIGURES 1-7 relate to a preferred form of anchoring means for post tensioned prestressing wires and in which:
  • FIGURE 1 is a perspective view, partly broken away and shown in section of the anchoring means by which a plurality of prestressing wires are anchored under tension in accordance with the invention
  • FIGURES 2 and 3 are perspective views of one of the anchoring wedges employed in the arrangement of FIG- URE 1;
  • FIGURE 4 is an end elevational view taken from the left end of FIGURE 1 but with the prestressing wires omitted therefrom;
  • FIGURE 5 is an end elevational view taken from the right end of FIGURE 1 but with the prestressing wires omitted therefrom;
  • FIGURE 6 is a vertical longitudinal sectional view through the anchoring means of FIGURE 1 being taken substantially upon the plane indicated by the broken section line 6-6 of FIGURE 5;
  • FIGURE 7 is a vertical transverse sectional detail view taken substantially upon the plane indicated by the section line 77 of FEGURE 6.
  • FIGURES 1-7 designates generally the anchor by which a plurality of prestressing rods or similar elements 12 are locked in position and under tension through the agency of a plurality of locking wedges each designated generally by the numeral 14.
  • the anchor ill comprises a metallic cylindrical body it having a laterally projecting anchoring flange 18 at one end thereof.
  • the body is provided with a conical locking surface 2% extending axially therethrough, the larger end of this bore 2t ⁇ emerging upon the surface of the anchoring flange 18, while the smaller end of the bore opens at the other end of the body.
  • the bore is preferably circular in cross-section and there are provided a series of complementary locking wedges 14, six being considered quite satisfactory for the purposes of this invention. These locking wedges are of a particular construction for the purpose of this invention.
  • each of the locking wedges 14 has a convex outer surface 2?. which is complementary to the conical locking surface of the bore 26' of the body 16 together with a pair of planar radially extending side surfaces, each designated by the numeral 2d while the smaller inner edge of the wedge 14 has a flat surface 26.
  • each of the two side faces there is provided a semi-cylindrical channel or groove as at 23 which, as shown in FIGURES l, 6 and 7 are adapted to receive the prestressing wires or elements 12 therebetween.
  • the depth or" these channels are slightly less than the radius of the prestressinig Wires or elements 12 in order that when the wires are disposed in the complementary grooves or channels of the adjacent planar faces 24 of adjacent wedges, and the wedges forced radially inward or against each other, the faces 24 of adjacent wedges will be slightly spaced to thereby cause the surfaces of the registering complementary channels of adjacent wedges to tightly frictionally grip and lock the prestressing wires or elements 12. therebetween.
  • each wedge has a longitudinally extending medial groove or channel 2% of a depth slightly less than the diameter of a wire or rod 12 for receiving the latter and wedging it tightly against the surface of the bore 24 ⁇ when the wedges are driven into place.
  • the thicker or outer ends of the locking wedges 14 have fiat surfaces 36 while similar surfaces 32 may be provided upon the inner edges of these wedges.
  • the outer surfaces are employed to receive the pressure of a suitable tool, such as that shown in FIGURES 1621 and described hereinafter, whereby the wedges will be forced inwardly of the bore 20 and into locking engagement with the prestressing wires or elements.
  • the anchor ll is specifically adapted for disposition in a recess or socket in the end of a concrete member or other structural element, it being understood that a' suitable oore extends through the beam or element for the reception of the tensioning members 12.
  • a' suitable oore extends through the beam or element for the reception of the tensioning members 12.
  • the precise manner in which the anchor Ill and its anchoring flange 13 is secured to the structural member for which the reinforcements 12 are intended, is in itself not critical for the purpose of this invention.
  • the locking wedges can receive, retain and anchor a maximum of twelve or more of the wires or elements 12.
  • the same construction can satisfactorily lock in post tensioned position any number of wires from two to ten inclusive or twelve wires by appropriately distributing the prestressing wires between the six sets of locking channels of the wedges and between the two concentric rows of radially spaced locking channels.
  • the two sets of channels 28 and 2% are radially spaced and staggered circumferentially of each other to effect a uniform distribution and spaces of the elements 12 from each other.
  • An anchor for tensioned prestressing elements comprising an elongated body having an opening extending entirely therethrough, said opening having a central longitudinal axis with the wall of said opening being tapered from end to end, a plurality of prestressing elements each having a straight and nontwisted portion, said portions being disposed within said opening in circumferentially spaced side-by-side relation about said axis, a plurality of wedges disposed in said opening in circumferentially' spaced side-by-side relation about said axis and each disposed between a pair of adjacent element portions, adjacent surfaces of adjacent wedges having registering pairs of complementary rectilinear channels, each pair of registering channels being of sufficient cross-sectional area to receive and to compressively grip and retain therein the straight portion of a single prestressing element in a twist free condition, said channels being spaced from said opening wall, said wedges having other surfaces cooperating with said opening wall for squeezing said wedges and their associated registering channels towards each other when the wedges are forced axially of said
  • wedges include outer faces which are transversely arcuate and have a cooperating wedging and sliding engagement with said opening wall, said outer faces having each a straight
  • said wedges include outer faces which are transversely arcuate and have a cooperating wedging'and sliding engagement with said opening wall, said outer faces having each a straight, longitudinally extending recess therein, one of said element portions being received in each of said recesses and compressively clamped therein between said recess and opening wall, said recesses being circumferentially spaced from said registering channels.
  • each wedge has a transversely arcuate outer face cooperatingly and wedgingly engaging said opening wall and a planar inner face spaced from'said central longitudinal axis together with a'pair of planar side faces, said side faces having said registering channels therein.
  • each wedge has a transversely arcuate outer face cooperatingly and wedgingly engaging said opening wall and a planar inner face spaced from said central longitudinal axis together with a pair of planar side faces, said side faces having said registering channels therein; each of said faces extending the length of said opening and said outer faces having continuous engagement with the opening wall throughout the length of the latter.
  • each wedge has a transversely arcuate outer face cooperatingly and wedgingly engaging said opening Wall and a planar inner face spaced from said central longitudinal axis together with a pair of planar side faces, said side faces having said registering'channels therein, each of said outer faces having a longitudinally extending, straight medially disposed recess therein, each recess receiving and compressively reamaeve taining one of said element portions therein and against said opening wall.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)

Description

March 10, 1964 BODUROFF ETAL 3,123,879
WEDGE ANCHOR FOR TENSIONING AND ANCHORING WIRES Filed Jan. 18. 1960 2 Sheets-Sheet l Lu/fcho Boduroff Homayoun J. Meheen March 10, 1964 BODUROFF ETAL 3,123,879
WEDGE ANCHOR FOR TENSIONING AND ANCHORING WIRES Filed Jan. 18, 1960 2 Sheets-Sheet 2 Fig. 5
f I l4 "li Lu/lcho Boduroff Homayoun J. Meheen ZNVENTORS i BY @waafiu min away 3m United States Patent 3,123,879 WEDGE ANQHUR FGE! TENQQNEQG AND ANCHDRIYG WIRES Lultcho Bodurolf, Denver, and Homayoun J. Meheen,
Cherry Hills Village, Enid, assignors to ll d: M
Frestress Corp, Englewood, Colo.
Filed .lan. l8, 1%9, Ser. No. 2,53% 19 Claims. (Cl. 24-122.6)
This invention comprises a novel and useful wedge anchor for tensioning and anchoring wires and more particularly relates to a means for post tensioning structures, and especially those of a concrete nature.
The principal object of this invention is to provide a means whereby prestressing wires may be effectively post tensioned and securely anchored under tension in a building structure.
A further object of the invention is to provide a means whereby a plurality of prestressing wires may be securely anchored and post tensioned in concrete members.
A further object of the invention is to provide a small compact anchoring means whereby a plurality of prestressing wires may be post tensioned and anchored as prestressing for various structural elements.
A still further object of the invention is to provide a means whereby a plurality of prestressing wires disposed in side-by-side arrangement may be securely anchored and post tensioned in building structures and wherein the loads applied to the prestressing wires will be effectively distributed between the same.
Yet another object of the invention is to provide a prestressing wire and anchor construction whereby a single anchor fitting and its locking means shall be effective for effectively anchoring and securing under tension at plurality of prestressing wires in which the number of wires is subject to variation and the arrangement of the wires is likewise variable.
A. further and specific object of the invention is to provide an anchoring means for the post tensioning of prestressing wires which shall effect an improved gripping action upon the wires, will maintain the wires in a spaced relation with respect to each other, and will have a positive gripping and non-slipping action upon the wires.
Still another object of the invention is to provide an apparatus whereby a plurality of prestressing wires may be selectively post tensioned and then securely anchored.
These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:
FIGURES 1-7 relate to a preferred form of anchoring means for post tensioned prestressing wires and in which:
FIGURE 1 is a perspective view, partly broken away and shown in section of the anchoring means by which a plurality of prestressing wires are anchored under tension in accordance with the invention;
FIGURES 2 and 3 are perspective views of one of the anchoring wedges employed in the arrangement of FIG- URE 1;
FIGURE 4 is an end elevational view taken from the left end of FIGURE 1 but with the prestressing wires omitted therefrom;
FIGURE 5 is an end elevational view taken from the right end of FIGURE 1 but with the prestressing wires omitted therefrom;
FIGURE 6 is a vertical longitudinal sectional view through the anchoring means of FIGURE 1 being taken substantially upon the plane indicated by the broken section line 6-6 of FIGURE 5; and
3,123,879 Patented Mar. 16, 1964 FIGURE 7 is a vertical transverse sectional detail view taken substantially upon the plane indicated by the section line 77 of FEGURE 6.
Referring now to the embodiment of FIGURES 1-7 which constitutes a preferred embodiment in accordance with the principles of this invention, it will be observed that the numeral 1t} designates generally the anchor by which a plurality of prestressing rods or similar elements 12 are locked in position and under tension through the agency of a plurality of locking wedges each designated generally by the numeral 14.
The anchor ill comprises a metallic cylindrical body it having a laterally projecting anchoring flange 18 at one end thereof. The body is provided with a conical locking surface 2% extending axially therethrough, the larger end of this bore 2t} emerging upon the surface of the anchoring flange 18, while the smaller end of the bore opens at the other end of the body. The bore is preferably circular in cross-section and there are provided a series of complementary locking wedges 14, six being considered quite satisfactory for the purposes of this invention. These locking wedges are of a particular construction for the purpose of this invention.
Referring now especially to FIGURES 2 and 3 it will be observed that each of the locking wedges 14 has a convex outer surface 2?. which is complementary to the conical locking surface of the bore 26' of the body 16 together with a pair of planar radially extending side surfaces, each designated by the numeral 2d while the smaller inner edge of the wedge 14 has a flat surface 26.
Upon each of the two side faces there is provided a semi-cylindrical channel or groove as at 23 which, as shown in FIGURES l, 6 and 7 are adapted to receive the prestressing wires or elements 12 therebetween. The depth or" these channels are slightly less than the radius of the prestressinig Wires or elements 12 in order that when the wires are disposed in the complementary grooves or channels of the adjacent planar faces 24 of adjacent wedges, and the wedges forced radially inward or against each other, the faces 24 of adjacent wedges will be slightly spaced to thereby cause the surfaces of the registering complementary channels of adjacent wedges to tightly frictionally grip and lock the prestressing wires or elements 12. therebetween. At the same time, there is provided a central space through the series of wedges and extending axially of the bore 2d which provides a clearance to permit radial movement of the wedges in the bore as the wedges, when shifted longitudinally of the bore are forced toward each other.
The outer convex face 22 of each wedge has a longitudinally extending medial groove or channel 2% of a depth slightly less than the diameter of a wire or rod 12 for receiving the latter and wedging it tightly against the surface of the bore 24} when the wedges are driven into place.
Preferably the thicker or outer ends of the locking wedges 14 have fiat surfaces 36 while similar surfaces 32 may be provided upon the inner edges of these wedges. The outer surfaces are employed to receive the pressure of a suitable tool, such as that shown in FIGURES 1621 and described hereinafter, whereby the wedges will be forced inwardly of the bore 20 and into locking engagement with the prestressing wires or elements.
The anchor ll) is specifically adapted for disposition in a recess or socket in the end of a concrete member or other structural element, it being understood that a' suitable oore extends through the beam or element for the reception of the tensioning members 12. However, the precise manner in which the anchor Ill and its anchoring flange 13 is secured to the structural member for which the reinforcements 12 are intended, is in itself not critical for the purpose of this invention.
21) of the anchor, and suitably post tensioned, with the locking wedges 14 being loosely received in the bore 2%) and seating the prestressing wires 12 therebetween, the locking wedges 14- are driven into the bore 29 until the conical bore forces the wedges circumferentially toward each other and radially towards the bore and thereby causes the wedges to frictionally grip and return the ten- 1 sioned elements 12. When this condition occurs, it is obvious that in view of the extensive surface to surface contact with the prestressing elements with the wedges, and of the wedges with the bore 20, and when the tensioning means is disengaged from the prestressing wires 12, that the latter will in turn have their tension imparted to the wedges. Thus a self-locking structure is provided, inasmuch as any extra or additional pull from one of the wires will result in further increasing the locking action of the entire assemblage.
In the arrangement illustrated in FIGURES l7 the locking wedges can receive, retain and anchor a maximum of twelve or more of the wires or elements 12. However, it is evident that the same construction can satisfactorily lock in post tensioned position any number of wires from two to ten inclusive or twelve wires by appropriately distributing the prestressing wires between the six sets of locking channels of the wedges and between the two concentric rows of radially spaced locking channels. The two sets of channels 28 and 2% are radially spaced and staggered circumferentially of each other to effect a uniform distribution and spaces of the elements 12 from each other.
It is further evident that more than six radially locking channels may be used to anchor a greater number of prestressing elements than the twelve shown in FIGURES 1-7.
The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.
What is claimed as new is as follows:
1. An anchor for tensioned prestressing elements comprising an elongated body having an opening extending entirely therethrough, said opening having a central longitudinal axis with the wall of said opening being tapered from end to end, a plurality of prestressing elements each having a straight and nontwisted portion, said portions being disposed within said opening in circumferentially spaced side-by-side relation about said axis, a plurality of wedges disposed in said opening in circumferentially' spaced side-by-side relation about said axis and each disposed between a pair of adjacent element portions, adjacent surfaces of adjacent wedges having registering pairs of complementary rectilinear channels, each pair of registering channels being of sufficient cross-sectional area to receive and to compressively grip and retain therein the straight portion of a single prestressing element in a twist free condition, said channels being spaced from said opening wall, said wedges having other surfaces cooperating with said opening wall for squeezing said wedges and their associated registering channels towards each other when the wedges are forced axially of said body opening.
2..The combination of claim 1 wherein said channels are of uniform cross-sectional area and shape throughout their length and are smooth and free of projections upon their complementary registering surfaces.
3. The combination of claim 1 wherein said body opening wall is frusto-conical. V
4. The combination of claim 1 wherein the longitudinal axes of said registering channels are mutually divergent from the smaller diameter to the larger diameter of said body opening.
5. The combination of claim 1 wherein the longitudinal axes of said registering channels are spaced uniformly from each other and are equidistant from said central longitudinal axis.
6. The combination of claim 1 wherein the longitudinal axes of said registering channels are disposed in opposed pairs on opposite sides of said central longitudinal axis and are spaced from each other and are equidistant from the wall of said opening.
7. The combination of claim 1 wherein said elements are disposed in balanced relation about said central longitudinal axis wherein their tensions will be balanced about the latter.
8. The combination of claim 1 wherein said wedges have a length substantially equal to that of said opening.
9. The combination of claim 1 wherein said wedges are of such length as to engage said opening wall over substantially the entire length of the latter.
10. The combination of claim 1' wherein said wedges are cut away along one surface thereof to provide a clearance between said wedges and the said central longitudinal axis.
11. The combination of claim 1 wherein said wedges are generally arcuate in transverse section and have outer arcuate faces cooperatingly engaging said opening wall.
12. The combination of claim 1 wherein said wedges are disposed in sets of circumferentially spaced wedges, each set having its wedges so positioned about said central longitudinal axis as to produce a balanced tension about the latter.
13. The combination of claim 1 wherein said wedges include outer faces which are transversely arcuate and have a cooperating wedging and sliding engagement with said opening wall, said outer faces having each a straight,
longitudinally extending recess therein, one of said element portions being received in each of said recesses and compressively clamped therein between said recessand opening wall.
14. The combination of claim 1 wherein said wedges include outer faces which are transversely arcuate and have a cooperating wedging'and sliding engagement with said opening wall, said outer faces having each a straight, longitudinally extending recess therein, one of said element portions being received in each of said recesses and compressively clamped therein between said recess and opening wall, said recesses being circumferentially spaced from said registering channels.
15. The combination of claim 1 wherein each wedge has a transversely arcuate outer face cooperatingly and wedgingly engaging said opening wall and a planar inner face spaced from'said central longitudinal axis together with a'pair of planar side faces, said side faces having said registering channels therein.
16. The combination of claim 1 wherein each wedge has a transversely arcuate outer face cooperatingly and wedgingly engaging said opening wall and a planar inner face spaced from said central longitudinal axis together with a pair of planar side faces, said side faces having said registering channels therein; each of said faces extending the length of said opening and said outer faces having continuous engagement with the opening wall throughout the length of the latter.
17. The combination of claim 1 wherein each wedge has a transversely arcuate outer face cooperatingly and wedgingly engaging said opening Wall and a planar inner face spaced from said central longitudinal axis together with a pair of planar side faces, said side faces having said registering'channels therein, each of said outer faces having a longitudinally extending, straight medially disposed recess therein, each recess receiving and compressively reamaeve taining one of said element portions therein and against said opening wall.
18. The combination of claim 1 wherein said body is provided With an externally projecting mounting flange, the outer surface of said mounting flange and the adjacent end of said body being coplanar whereby the inner surface of said mounting flange Will be abutted against the outer surface of an article When said body is completely embedded in the latter.
19. The combination of claim 1 wherein said body is provided with an integral externally projecting mounting flange at one end and completely surrounding said body, said opening in said body being convergently tapering from said mounting flange to the other end of said body whereby said mounting flange may be engaged with the outer surface of an object in Which said elements are dis- P 0 posed when said body is completely embedded in said object.
References Cited in the file of this patent UNITED STATES PATENTS 1,606,789 Hooley Q Nov. 16, 1926 2,177,364 Fotsch Oct. 24, 1939 2,458,304 Runde Jan. 4, 1949 2,641,810 Gasink June 16, 1953 2,763,464 Leonhardt Sept. 18, 1956 2,834,081 Stump May 13, 1958 2,844,356 Siegfried July 22, 1958 2,856,662 Clark et al. Oct. 21, 1958 FOREIGN PATENTS 165,577 Austria Mar. 25, 1950 225,354 Australia Nov. 11, 1959

Claims (1)

1. AN ANCHOR FOR TENSIONED PRESTRESSING ELEMENTS COMPRISING AN ELONGATED BODY HAVING AN OPENING EXTENDING ENTIRELY THERETHROUGH, SAID OPENING HAVING A CENTRAL LONGITUDINAL AXIS WITH THE WALL OF SAID OPENING BEING TAPERED FROM END TO END, A PLURALITY OF PRESTRESSING ELEMENTS EACH HAVING A STRAIGHT AND NONTWISTED PORTION, SAID PORTIONS BEING DISPOSED WITHIN SAID OPENING IN CIRCUMFERENTIALLY SPACED SIDE-BY-SIDE RELATION ABOUT SAID AXIS AND EACH DISPOSED BETWEEN A PAIR OF ADJACENT ELEMENT PORTIONS, ADJACENT SURFACES OF ADJACENT WEDGES HAVING REGISTERING PAIRS OF COMPLEMENTARY RECTILINEAR CHANNELS, EACH PAIR OF REGISTERING CHANNELS BEING OF SUFFICIENT CROSS-SECTIONAL AREA TO RECEIVE AND TO COMPRESSIVELY GRIP AND RETAIN THEREIN THE STRAIGHT PORTION OF A SINGLE PRESTRESSING ELEMENT IN A TWIST FREE CONDITION, SAID CHANNELS BEING SPACED FROM SAID OPENING WALL, SAID WEDGES HAVING OTHER SURFACES COOPERATING WITH SAID OPENING WALL FOR SQUEEZING SAID WEDGES AND THEIR ASSOCIATED REGISTERING CHANNELS TOWARDS EACH OTHER WHEN THE WEDGES ARE FORCED AXIALLY OF SAID BODY OPENING.
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US3219368A (en) * 1962-05-29 1965-11-23 Houston L Crumpler Drainage line improvements
US3220074A (en) * 1963-09-03 1965-11-30 Esco Corp Self-swaging ferrule
US3254383A (en) * 1964-12-28 1966-06-07 Esco Corp Self-swaging ferrule
DE1271962B (en) * 1964-12-21 1968-07-04 Vorspann Technik G M B H Wedge anchorage for tension wire bundles
US3438280A (en) * 1966-10-21 1969-04-15 Teleflex Inc Remote control assembly
US3449876A (en) * 1968-02-21 1969-06-17 George H Howlett Tendon anchorage
US3522682A (en) * 1968-03-08 1970-08-04 Howlett Machine Works Multiple tendon anchorage
US3659321A (en) * 1969-06-24 1972-05-02 Stup Procedes Freyssinet Multiple wedge anchorage device for prestressing tendons
US3676900A (en) * 1969-04-19 1972-07-18 Ricardo De Valenzuela System of fixing braided cables and rods subjected to stress
US3880490A (en) * 1973-10-01 1975-04-29 Lockheed Aircraft Corp Means and method for protecting and spacing clamped insulated wires
US4619546A (en) * 1983-11-14 1986-10-28 Schlippes Hans Josef Jutted joint structures
USD428325S (en) * 1998-03-10 2000-07-18 Van Dreumel Andre Fire preventing duct for passing cables and pipes through walls and bulkheads
USD763063S1 (en) * 2014-09-26 2016-08-09 Lee D. Welch Cable guide
US20160362939A1 (en) * 2013-11-12 2016-12-15 Vectorsum, Inc. Composite sucker rod assembly for underground wells
WO2017015202A1 (en) * 2015-07-17 2017-01-26 Felix Sorkin Compact anchor for post-tensioned concrete segment
USD778143S1 (en) * 2016-02-19 2017-02-07 Wanho T Manufacturing Co., Ltd. Cable organizing device
US10381810B1 (en) * 2018-12-21 2019-08-13 Youhung International View Co., Ltd. Network cable combing tool
US10582981B2 (en) 2016-02-02 2020-03-10 Stryker Corporation Accessory support and coupling systems for an accessory support
US11204109B2 (en) * 2018-07-31 2021-12-21 Commscope Technologies Llc Grommet for holding cables
US11359659B2 (en) * 2016-08-31 2022-06-14 Beijing Surgerii Technology Co., Ltd. Locking device
US11965334B1 (en) * 2024-01-11 2024-04-23 King Faisal University Multi-layer wedge anchorage for fiber-reinforced polymer (FRP) plates and tendons

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US2763464A (en) * 1952-07-26 1956-09-18 Leonhardt Fritz Apparatus for anchorage of concrete reinforcements
US2834081A (en) * 1955-08-26 1958-05-13 Jr Charles W Stump Rod fastener
US2844356A (en) * 1955-04-15 1958-07-22 Losinger Ag Hydraulic jack for tensioning reinforcing wires of prestressed concrete structures
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US1606789A (en) * 1925-11-20 1926-11-16 John W Hooley Removable junction sleeve
US2177364A (en) * 1937-02-15 1939-10-24 Reliable Electric Co Line splice
US2458304A (en) * 1944-01-19 1949-01-04 Kenneth R Runde Self-tightening rope clamp
AT165577B (en) * 1948-10-04 1950-03-25 Alois Fiedler Rope clamp
US2641810A (en) * 1949-03-14 1953-06-16 American Hoist & Derrick Co Plural cable clamp
US2763464A (en) * 1952-07-26 1956-09-18 Leonhardt Fritz Apparatus for anchorage of concrete reinforcements
US2844356A (en) * 1955-04-15 1958-07-22 Losinger Ag Hydraulic jack for tensioning reinforcing wires of prestressed concrete structures
US2834081A (en) * 1955-08-26 1958-05-13 Jr Charles W Stump Rod fastener
US2856662A (en) * 1957-04-17 1958-10-21 Earl D Clark Cable shackle

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219368A (en) * 1962-05-29 1965-11-23 Houston L Crumpler Drainage line improvements
US3220074A (en) * 1963-09-03 1965-11-30 Esco Corp Self-swaging ferrule
DE1271962B (en) * 1964-12-21 1968-07-04 Vorspann Technik G M B H Wedge anchorage for tension wire bundles
US3254383A (en) * 1964-12-28 1966-06-07 Esco Corp Self-swaging ferrule
US3438280A (en) * 1966-10-21 1969-04-15 Teleflex Inc Remote control assembly
US3449876A (en) * 1968-02-21 1969-06-17 George H Howlett Tendon anchorage
US3522682A (en) * 1968-03-08 1970-08-04 Howlett Machine Works Multiple tendon anchorage
US3676900A (en) * 1969-04-19 1972-07-18 Ricardo De Valenzuela System of fixing braided cables and rods subjected to stress
US3659321A (en) * 1969-06-24 1972-05-02 Stup Procedes Freyssinet Multiple wedge anchorage device for prestressing tendons
US3880490A (en) * 1973-10-01 1975-04-29 Lockheed Aircraft Corp Means and method for protecting and spacing clamped insulated wires
US4619546A (en) * 1983-11-14 1986-10-28 Schlippes Hans Josef Jutted joint structures
USD428325S (en) * 1998-03-10 2000-07-18 Van Dreumel Andre Fire preventing duct for passing cables and pipes through walls and bulkheads
US20160362939A1 (en) * 2013-11-12 2016-12-15 Vectorsum, Inc. Composite sucker rod assembly for underground wells
USD763063S1 (en) * 2014-09-26 2016-08-09 Lee D. Welch Cable guide
WO2017015202A1 (en) * 2015-07-17 2017-01-26 Felix Sorkin Compact anchor for post-tensioned concrete segment
US10582981B2 (en) 2016-02-02 2020-03-10 Stryker Corporation Accessory support and coupling systems for an accessory support
US11000340B2 (en) 2016-02-02 2021-05-11 Stryker Corporation Accessory support and coupling systems for an accessory support
US11540891B2 (en) 2016-02-02 2023-01-03 Stryker Corporation Accessory support and coupling systems for an accessory support
USD778143S1 (en) * 2016-02-19 2017-02-07 Wanho T Manufacturing Co., Ltd. Cable organizing device
US11359659B2 (en) * 2016-08-31 2022-06-14 Beijing Surgerii Technology Co., Ltd. Locking device
US11204109B2 (en) * 2018-07-31 2021-12-21 Commscope Technologies Llc Grommet for holding cables
US10381810B1 (en) * 2018-12-21 2019-08-13 Youhung International View Co., Ltd. Network cable combing tool
US11965334B1 (en) * 2024-01-11 2024-04-23 King Faisal University Multi-layer wedge anchorage for fiber-reinforced polymer (FRP) plates and tendons

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