EP1653830B1 - Expansible hole anchor with enlargedd chock-releasing striker head - Google Patents
Expansible hole anchor with enlargedd chock-releasing striker head Download PDFInfo
- Publication number
- EP1653830B1 EP1653830B1 EP04779262A EP04779262A EP1653830B1 EP 1653830 B1 EP1653830 B1 EP 1653830B1 EP 04779262 A EP04779262 A EP 04779262A EP 04779262 A EP04779262 A EP 04779262A EP 1653830 B1 EP1653830 B1 EP 1653830B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- chock
- cable
- hole
- expansible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Not-in-force
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Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B29/00—Apparatus for mountaineering
- A63B29/02—Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons
- A63B29/024—Climbing chocks
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3276—Arrangements on buildings for connecting safety-lines
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
- E04G21/3261—Safety-nets; Safety mattresses; Arrangements on buildings for connecting safety-lines
- E04G21/3276—Arrangements on buildings for connecting safety-lines
- E04G21/329—Arrangements on buildings for connecting safety-lines with measures for dampening the fall
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0043—Lifelines, lanyards, and anchors therefore
- A62B35/0068—Anchors
Definitions
- This invention relates to an expansible hole anchor with an enlarged chock-releasing striker head.
- the invention is easily installed and removed from a hole formed with a solid structure.
- the present anchor is inserted into a hole drilled in a concrete wall at a construction site.
- a safety harness, lifeline, and other fall protection gear is secured to the worker and to the anchor to arrest the worker in the event of a fall.
- the present anchor is applicable for use in recreational rock climbing.
- a chock cable interconnects the handle and the second chock.
- the chock-release column includes a cable guide defining respective openings receiving the load cable and the chock cable.
- FIG. 1 an expansible hole anchor according to the present invention is illustrated in Figure 1 , and shown generally at reference numeral 10.
- the hole anchor 10 is adapted for inserting into a hole formed with a solid structure, such as a concrete wall, and is applicable for use with a safety harness, lifeline, and other fall protection gear worn by a worker to arrest the worker in the event of a fall.
- the anchor 10 comprises a steel-wire load cable 11 looped at one end 12 for attaching the lifeline, and an assembly of solid metal chocks 14, 15, and 16 located at an opposite end.
- the chocks 14, 15, and 16 cooperate, as described below, to constrict and expand the anchor 10 relative to the hole of the structure.
- the spaces 26 and 27 formed between the shoulders 17 and 18 allow passage of the chock cables 21, 22 rearwardly towards the handle 25.
- the rear portion of the center chock 15 is relatively thin, thereby allowing substantial contraction of the anchor 10.
- the thinnest section of the center chock 15 forward of the arcuate shoulders 17, 18 has a profile dimension less than the diameter of the load cable 11 (See Figures 3 and 4 ).
- the side chocks 14, 16 are urged forward along diverging outer surfaces of the center chock 15.
- the anchor 10 does not fully expand inside the hole, but instead forces the side chocks 14, 16 into sufficient frictional engagement with the inside wall of the structure hole to prevent inadvertent dislodging of the anchor 10.
- the side chocks 14, 16 are set by one controlled pull on the cable loop 12.
- FIG. 5-9 A further embodiment of an expansible hole anchor 60 according to the present invention is illustrated in Figures 5-9 .
- the anchor 60 comprises a steel-wire load cable 61 looped at one end 62, and an assembly of solid metal chocks 64, 65, and 66 located at an opposite end.
- the chocks 64, 65, 66 cooperate, as previously described, to constrict and expand the anchor 60 relative to the hole of the structure.
Abstract
Description
- This invention relates to an expansible hole anchor with an enlarged chock-releasing striker head. The invention is easily installed and removed from a hole formed with a solid structure. In one application, the present anchor is inserted into a hole drilled in a concrete wall at a construction site. A safety harness, lifeline, and other fall protection gear is secured to the worker and to the anchor to arrest the worker in the event of a fall. In another application, the present anchor is applicable for use in recreational rock climbing.
- Substantial drawbacks and limitations exist in prior art expansible hole anchors, particularly those with spring-loaded retractable handles. The handle is applicable for moving the anchor from a normal expanded condition to a contracted condition for inserting and removing the anchor from the hole. In order to remove the anchor, the user is instructed to manually retract the handle to disengage the anchor chocks from an inside wall of the hole. In many cases, the anchor is so tightly lodged inside the hole that movement of the handle is difficult, if not impossible. This occurs often, as the operating instructions call for a tug on the load cable to set the anchor during insertion. Additional forces exerted on the anchor during a worker's fall cause even greater locking engagement of the anchor chocks. The instructions commonly provided for dislodging an embedded anchor are to insert a small, narrow flat screwdriver into the hole, and create an impact force on an end fitting to overcome the locking friction. In practice, this procedure is generally ineffective; often resulting in mangled or broken retraction cables, and rendering the anchor unsuitable for future use. This procedure further inconveniences the user by requiring the availability of special tools in order to access and release the anchor chocks. If all methods of removal fail, the exposed portion of the anchor is torched off, a new hole drilled, and the balance of the anchor is left in the old hole.
- A further problem of commercial prior art anchors relates to the exposure of control cables operable for moving the anchor from the expanded condition to the contracted condition. Typically, these cables will bear directly against an inside wall of the anchor hole, resulting in substantial abrasion and chaffing when the anchor is inserted into and removed from the hole. Further wear is created when the worker moves about causing the control cables to grind against the concrete lip of the hole. If left undetected, the worn cables will eventually cause the anchor to fail which may result in serious injury or death.
- Examples of prior anchors are given by patents
EP0323391 ,US2002/3098054 andUS5484132 . These documents show anchors and chock devices in which a central substantially fixed chock is engaged by side chocks in order to create a chocking position for anchor purposes. The cables are presented through the hollow hole in the anchor and therefore are substantially subject to abrasion chaffing as well as potential fouling when it is desirable to release the anchor. - Therefore, it is an object of the invention to provide an expansible hole anchor which is readily inserted into and removed from a hole formed in a solid structure.
- It is another object of the invention to provide an expansible hole anchor which is conveniently dislodged and removed without requiring insertion of a special tool inside the hole.
- It is another object of the invention to provide an expansible hole anchor which enables substantial retraction of the chocks, thereby increasing contraction of the anchor relative to the hole.
- It is another object of the invention to provide an expansible hole anchor which offers a striking surface outside of the hole for dislodging the anchor chocks.
- In accordance with the present invention there is provided an expansible anchor adapted for inserting into a hole formed within a structure, said anchor comprising:
- a load cable;
- a center chock attached to an end of said load cable, and comprising a bearing shoulder and an integrally-formed cable connector secured to said load cable;
- at least one side chock adjacent to said center chock and adapted for movement between an anchor-contracting position and an anchor-expanding position, whereby in said anchor-contracting position, said anchor is readily inserted into and removed from the hole of the structure, and in said anchor-expanding position, said anchor is locked inside the hole of the structure;
- a chock-release column having a hollow end receiving the cable connector of said centre chock and bearing against the bearing shoulder of said center chock, and said chock-release column further comprising an enlarged head adapted for locating outside of the hole, said enlarged head defining a striking surface adapted for receiving a sudden force and transferring the force through said chock-release column to said center chock, such that said at least one side chock is moveable from the anchor-expanding position to the anchor-contracting position to therefore dislodge said anchor from the hole of the structure; and
- a handle carried by said load cable and adapted for moving said at least one side chock from the anchor-expanding position into the anchor-contracting position.
- According to a preferred embodiment of the invention, a chock cable interconnects the handle and the second chock.
According to another preferred embodiment of the invention, the chock-release column includes a cable guide defining respective openings receiving the load cable and the chock cable. - According to another preferred embodiment of the invention, a cable-positioning ferrule defines respective spaced-apart openings for receiving the load cable and the chock cable.
- According to another preferred embodiment of the invention, the second chock defines a generally convex inner surface adapted for sliding movement against an inner surface of the first chock.
- Some of the objects of the invention have been set forth above. Other objects and advantages of the invention will appear as the description proceeds when taken in conjunction with the following drawings, in which:
-
Figure 1 is a perspective view of an expansible hole anchor according to one preferred embodiment of the present invention; -
Figure 2 is an exploded view of the hole anchor; -
Figure 3 is a side view of the hole anchor with the side chocks in an anchor-expanding position; -
Figure 4 is a side view of the hole anchor with the side chocks in an anchor-contracting position; -
Figure 5 is a perspective view of an expansible, variable-depth hole anchor according to a second preferred embodiment of the invention; -
Figure 6 is an exploded view of the variable-depth hole anchor; -
Figure 7 is a side view of the variable-depth hole anchor with the side chocks in an anchor-expanding position; -
Figure 8 is a side view of the hole anchor with the side chocks in an anchor-contracting position; and -
Figure 9 is an environmental view of the variable-depth hole anchor positioned inside a hole formed in a solid structure. - Referring now specifically to the drawings, an expansible hole anchor according to the present invention is illustrated in
Figure 1 , and shown generally atreference numeral 10. Thehole anchor 10 is adapted for inserting into a hole formed with a solid structure, such as a concrete wall, and is applicable for use with a safety harness, lifeline, and other fall protection gear worn by a worker to arrest the worker in the event of a fall. Theanchor 10 comprises a steel-wire load cable 11 looped at oneend 12 for attaching the lifeline, and an assembly ofsolid metal chocks chocks anchor 10 relative to the hole of the structure. - As best shown in
Figures 1 and2 , thecenter chock 15 has a generally wedge-shaped body,arcuate shoulders cable connector 19. Thecable connector 19 attaches thecenter chock 15 directly to theload cable 11. The side chocks 14 and 16 reside adjacent thecenter chock 15, and have complementary angled profiles designed to provide maximum uniform gripping action when set inside the structure hole. The outside surface of eachside chock center chock 15. In an alternative embodiment, the inside surface of each side chock is slightly convex, while the outside surfaces of the center chock are either flat or slightly concave. - The side chocks 14 and 16 are attached to respective steel-
wire chock cables chock cables pivot handle 25. Thepivot handle 25 is carried on theload cable 11, and is adapted for being manually retracted by the user to move theside chocks Figures 1 and3 , to an anchor-contracting position shown inFigure 4 . In the anchor-contracting position, the side chocks 14, 16 are more closely spaced apart on opposite sides of thecenter chock 15 and immediately forward of thearcuate shoulders anchor 10 is readily inserted into and removed from the hole of the structure. Thespaces shoulders chock cables handle 25. The rear portion of the center chock 15 is relatively thin, thereby allowing substantial contraction of theanchor 10. Preferably, the thinnest section of the center chock 15 forward of thearcuate shoulders Figures 3 and4 ). In the anchor-expanding position, the side chocks 14, 16 are urged forward along diverging outer surfaces of thecenter chock 15. In use, theanchor 10 does not fully expand inside the hole, but instead forces the side chocks 14, 16 into sufficient frictional engagement with the inside wall of the structure hole to prevent inadvertent dislodging of theanchor 10. After inserting theanchor 10 into the hole, the side chocks 14, 16 are set by one controlled pull on thecable loop 12. - Referring again to
Figures 1 and2 , a chock-release column 30 is carried on theload cable 11 adjacent the center chock 15, and comprises aseparate cable ferrule 31 and enlarged-diameter head 32. Thecable ferrule 31 is positioned over thecable connector 19 of the center chock 15 and bears directly against thearcuate shoulders enlarged head 32 locates outside of the structure hole, and defines a flat annular striking or bearingsurface 32A designed to receive a force applied using the thumbs or any rigid object, such as a snap hook. The force is transferred directly through the chock-release column 30 to the center chock 15 to dislodge the side chocks 14, 16 from friction-locking engagement inside the hole. Once dislodged, the side chocks 14, 16 are easily retracted by thehandle 25; moving from the anchor-expanding position to the anchor-contracting position to remove theanchor 10 from the structure hole. Acylindrical spacer 34 andcoil spring 35 are carried on theload cable 11 rearward of the chock-release column 30, and cooperate to maintain the cable (*cylinder) 31 and enlarged strikinghead 32 in an engaged, assembled condition with thecable cylinder 31 bearing directly against theshoulders center chock 15. - Preferably, the maximum diameter of the
striking head 32 is greater than the maximum distance between the side chocks 14 and 16 in the anchor-expanding condition. As such, upon insertion of theanchor 10 into the hole, theenlarged striking head 32 is pushed directly against the mouth of the hole, thereby locating the anchor chocks 14, 15, and 16 inside the hole in a position of maximum effectiveness and safety, while maintaining ready access to the exposedstriking surface 32A. When thecable loop 12 is pulled vertically by the weight of the worker, the chock-release column 30 flexes slightly at a joint between thecable ferrule 31 and theenlarged head 32. The outer flange of thehead 32 engages the structure outside of the hole to help distribute forces acting on theload cable 11 and the structure. - According to one embodiment, the
enlarged head 32 of the chock-release column 30 has three openings for receiving theload cable 11 andchock cables load cable 11 when pulled vertically. A reduced diameter,integral neck 36 extends forward of theenlarged head 32 has interior passages or longitudinal exterior grooves to designed receive thechock cables neck 36 cooperates with thearcuate shoulders center chock 15. Thechock cables anchor 10 by a fixedpositioning block 38 located adjacent thepivot handle 25. Thepositioning block 38 likewise has three openings for receiving theload cable 11 andchock cables anchor 10, rotation of the chock-release column 30 relative to the center chock 15 is prevented by mating notches and fingers. - The pivot handle 25 comprises an assembly of
links rockers 45, 46 (SeeFigure 2 ) attached together on opposite sides of theload cable 11 byrivets 48. Respective ends of thechock cables rockers Figures 1 ,3 , and4 , therockers chock cables load cable 11. Thehandle 25 rocks or pivots when onechock cable other cable anchor 10. Preferably, to facilitate retraction of thehandle 25,respective finger curves rockers - A
washer 51 andretractor spring 52 are carried on theload cable 11 rearward of thepivot handle 25. Theretractor spring 52 is compressed between thehandle 25 andcable loop 12, and operates to normally urge thehandle 25 andchock cables retractor spring 52 is preferably pre-loaded in the anchor-expanding position at greater than 20% of its maximum compression force. Preferably, thecable loop 12 is secured by aduplex ferrule 53 and reinforced with a metal thimble (not shown). Anequipment tag 55 provides relevant product information. - A further embodiment of an
expansible hole anchor 60 according to the present invention is illustrated inFigures 5-9 . Theanchor 60 comprises a steel-wire load cable 61 looped at oneend 62, and an assembly ofsolid metal chocks chocks anchor 60 relative to the hole of the structure. - As best shown in
Figures 5 and6 , the center chock 65 has a generally wedge-shaped body,arcuate shoulders cable connector 69. Thecable connector 69 attaches the center chock 65 directly to theload cable 61. The side chocks 64 and 66 reside adjacent the center chock 65, and have complementary angled profiles designed to provide maximum uniform gripping action when set inside the structure hole. The outside surface of each side chock 64, 66 is preferably curved to conform to an inside wall of the hole, while the inside surface is substantially flat or convex for sliding along a flat outside surface of thecenter chock 65. In addition, the outside surfaces of the side chocks 64, 66 may have lateral ridges or other surface texturing for increased friction resistance. - The side chocks 64, 66 are attached to respective steel-
wire chock cables chock cables load cable 61, and is adapted for being manually retracted by the user to move the side chocks 64, 66 from a normal anchor-expanding position, best shown inFigures 5 and7 , to an anchor-contracting position shown inFigure 8 . In the anchor-contracting position, the side chocks 64, 66 are more closely spaced apart on opposite sides of the center chock 65 such that theanchor 60 is readily inserted into and removed from the hole of the structure. The rear portion of the center chock 65 is relatively thin, thereby allowing substantial contraction of theanchor 60. Preferably, the thinnest section of the center chock 65 has a profile dimension less than the diameter of the load cable 61 (SeeFigures 7 and8 ). In the anchor-expanding position, the side chocks 64, 66 are urged forward along diverging outer surfaces of thecenter chock 65. - Referring again to
Figures 5 and6 , a chock-release column 80 is carried on theload cable 61 adjacent the center chock 65, and comprises a series of individual, aligned column spools 80A, 80B, 80C, 80D, 80E, and 80F. Theforwardmost spool 80A defines a contoured opening for receiving and guiding theload cable 61 andchock cables cable guide spool 80A positions over thecable connector 69 of the center chock 65 and bears directly against thearcuate shoulders rearwardmost spool 80F has an enlarged-diameter head 82 which locates outside of the structure hole, and defines a flat annular striking (bearing)surface 82A designed to receive a force applied using the thumbs or any rigid object. The force is transferred directly through the assembled spools 80A-80F to the center chock 65 to dislodge the side chocks 64, 66 from friction-locking engagement inside the hole. Once dislodged, the side chocks 64, 66 are easily retracted by thehandle 75; moving from the anchor-expanding position to the anchor-contracting position to remove theanchor 60 from the structure hole. - The chock-
release column 80 is normally urged into an axially-aligned, assembled condition by acompression spring 84 carried on theload cable 61. Thecompression spring 84 extends between theend spool 80F and a fixedpositioning block 85. A flexible, polyurethane,cable guide sheath 86 resides between thespring 84 and thecables cables sheath 86 has separate openings for receiving and guiding theload cable 61 andchock cables chock cables sheath 86 through openings formed with the fixedpositioning block 85 to thepivot handle 75. - The unique multi-piece construction of the chock-
release column 80 allows use of thepresent anchor 60 in holes of varying depths. As illustrated inFigure 9 , when inserted into a relatively shallow hole and upon application a vertical load to thecable loop 62, theanchor 60 flexes as much as 90 degrees or more at a break point betweenspools long compression spring 84 accommodates sliding adjustment of thespools 80A-80F along the length of theanchor 60. To remove theanchor 60 from the hole, theload cable 61 may be straightened to reassemble and align thespools 80A-80F, and the enlarged-diameter head 82 struck using a suitable rigid object, as previously described. Alternatively, with theload cable 61 bent as shown inFigure 9 , the exposedspool 80B located at the mouth of the hole can be struck to transmit a chock-releasing force directly to thecenter chock 65. - As described above, the pivot handle 75 comprises an assembly of
links Figure 6 ) attached together on opposite sides of theload cable 61 byrivets 97. Respective ends of thechock cables rockers 95, 96. When assembled, as shown inFigures 5 ,7 , and8 , therockers 95, 96 cooperate to allow kink-controlling movement of thechock cables load cable 61. Thehandle 75 rocks or pivots, as indicated inFigure 9 , when onechock cable 71 is in tension and theother cable 72 is in compression, thereby discouraging cable kinking or excessive cable bending which may damage theanchor 60. Preferably, to facilitate retraction of thehandle 75,respective finger curves rockers 95 and 96. - A
washer 98 andretractor spring 99 are carried on theload cable 61 rearward of thepivot handle 75. Theretractor spring 99 is compressed between thehandle 75 andcable loop 62, and operates to normally urge thehandle 75 andchock cables cable loop 62 is secured by aduplex ferrule 101 and reinforced by ametal thimble 102. Anequipment tag 103 provides relevant product information. - Embodiments of an expansible hole anchor according to the present invention are described above. Various details of the invention may be changed without departing from its scope. Furthermore, the foregoing description of the preferred embodiment of the invention and best mode for practicing the invention are provided for the purpose of illustration only and not for the purpose of limitation-the invention being defined by the claims.
Claims (6)
- An expansible anchor (10, 60) adapted for inserting into a hole formed within a structure, said anchor comprising:a load cable (11,61);a center chock (15, 65) attached to an end of said load cable, and comprising a bearing shoulder (17, 18, 67, 68) and an integrally-formed cable connector (19, 69) secured to said load cable;at least one side chock (14, 16, 64, 66) adjacent to said center chock and adapted for movement between an anchor-contracting position and an anchor-expanding position, whereby in said anchor-contracting position, said anchor is readily inserted into and removed from the hole of the structure, and in said anchor-expanding position, said anchor is locked inside the hole of the structure;a chock-release column (30, 80) having a hollow end receiving the cable connector of said centre chock and bearing against the bearing shoulder of said center chock, and said chock-release column further comprising an enlarged head (32, 82) adapted for locating outside of the hole, said enlarged head defining a striking surface (32A, 82A) adapted for receiving a sudden force and transferring the force through said chock-release column to said center chock, such that said at least one side chock is moveable from the anchor-expanding position to the anchor-contracting position to therefore dislodge said anchor from the hole of the structure; anda handle (25, 75) carried by said load cable and adapted for moving said at least one side chock from the anchor-expanding position into the anchor-contracting position.
- An expansible anchor according to claim 1, and comprising a chock cable (21, 22, 71, 72) interconnecting said handle and said at least one side chock.
- An expansible anchor according to claim 2, wherein said handle comprises a rocker assembly (45, 46, 95, 96) allowing kink-controlling movement of said chock cable relative to said load cable.
- An expansible anchor according to claim 1, wherein said chock-release column comprises a cable guide (36, 86) defining a contoured opening receiving said load cable and said chock cable.
- An expansible anchor according to claim 2, and comprising a cable-positioning ferrule (31) defining respective spaced-apart openings for receiving said load cable and said chock cable.
- An expansible anchor according to claim 1, wherein said at least one side chock defines a generally convex inner surface adapted for sliding movement against an inner surface of said first chock.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US49098003P | 2003-07-28 | 2003-07-28 | |
US49681503P | 2003-08-21 | 2003-08-21 | |
PCT/US2004/024129 WO2005012650A2 (en) | 2003-07-28 | 2004-07-27 | Expansible hole anchor with enlargedd chock-releasing striker head |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1653830A2 EP1653830A2 (en) | 2006-05-10 |
EP1653830A4 EP1653830A4 (en) | 2007-09-12 |
EP1653830B1 true EP1653830B1 (en) | 2008-12-10 |
Family
ID=34118847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04779262A Not-in-force EP1653830B1 (en) | 2003-07-28 | 2004-07-27 | Expansible hole anchor with enlargedd chock-releasing striker head |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1653830B1 (en) |
AT (1) | ATE416651T1 (en) |
DE (1) | DE602004018323D1 (en) |
WO (1) | WO2005012650A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7258316B2 (en) * | 2004-07-27 | 2007-08-21 | Reeves Eric W | Expansible hole anchor with enlarged chock-releasing striker head |
AU2016202264B2 (en) * | 2015-04-23 | 2017-12-07 | T.J Preston & D.L Taylor | Climbing tool |
CN106492369B (en) * | 2016-10-25 | 2019-09-03 | 国网山东省电力公司蓬莱市供电公司 | A kind of cable steps on bar anti-fall device |
US11446526B2 (en) * | 2020-10-28 | 2022-09-20 | Werner Co. | Expansion bolt and pivot and swivel mechanism therefor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4834327A (en) * | 1987-12-24 | 1989-05-30 | Byrne Steve J | Self-adjusting climbing chock |
US5484132A (en) * | 1995-02-08 | 1996-01-16 | George; Philip B. | Removable piton climbing aid and method of using |
US6729821B2 (en) * | 2002-02-28 | 2004-05-04 | Karl Guthrie | Expansion bolt |
-
2004
- 2004-07-27 WO PCT/US2004/024129 patent/WO2005012650A2/en active Application Filing
- 2004-07-27 DE DE602004018323T patent/DE602004018323D1/en active Active
- 2004-07-27 EP EP04779262A patent/EP1653830B1/en not_active Not-in-force
- 2004-07-27 AT AT04779262T patent/ATE416651T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1653830A4 (en) | 2007-09-12 |
DE602004018323D1 (en) | 2009-01-22 |
EP1653830A2 (en) | 2006-05-10 |
WO2005012650A9 (en) | 2005-07-07 |
WO2005012650A3 (en) | 2005-11-17 |
WO2005012650A2 (en) | 2005-02-10 |
ATE416651T1 (en) | 2008-12-15 |
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Legal Events
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