US3491648A - Anchoring element construction - Google Patents
Anchoring element construction Download PDFInfo
- Publication number
- US3491648A US3491648A US770759A US3491648DA US3491648A US 3491648 A US3491648 A US 3491648A US 770759 A US770759 A US 770759A US 3491648D A US3491648D A US 3491648DA US 3491648 A US3491648 A US 3491648A
- Authority
- US
- United States
- Prior art keywords
- casing
- collar
- bolt
- point
- driving
- 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.)
- Expired - Lifetime
Links
- 238000004873 anchoring Methods 0.000 title description 27
- 238000010276 construction Methods 0.000 title description 7
- 239000000463 material Substances 0.000 description 16
- 239000013013 elastic material Substances 0.000 description 8
- 239000013077 target material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B15/00—Nails; Staples
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/14—Bolts or the like for shooting into concrete constructions, metal walls or the like by means of detonation-operated nailing tools
Definitions
- a securing device or anchoring element such as a nail, bolt, etc., which is adapted to be driven into a hard receiving material such as a concrete or a steel includes a shank portion with a pointed end which is enclosed by a casing of elastic material at least adjacent the pointed end of the shank portion.
- the construction includes a collar portion formed on the shank adjacent the pointed portion.
- a casing of elastic material surrounds the pointed end from the collar to the pointed tip and is preferably widened at the location at the tip to provide a shoulder to increase the driving power range at the target material into which the anchoring device is to be driven.
- This invention relates, in general, to the construction of anchoring devices and, in particular, to a new and useful anchoring device of a type which is adapted to be driven into a hard receiving material by a power operated setting tool and which includes a collar formed at a location adjacent the pointed end thereof and with a casing of an elastic material surrounding the pointed end up from the tip to the collar.
- the present invention is particularly applicable for applications of securing elements to a hard brittle material such as concrete.
- a hard brittle material such as concrete.
- the concrete is stressed by shear and it is thus loosened or cracks in the proximity of the drive in point. The result is that it chips during further use thereof.
- the loosening of the target concrete material as well as the subsequent chipping thereof leads to a reduction of the holding power of the bolt in the concrete.
- the chipping causes the surface of the concrete to become marred. Attempts to prevent this by applying a collar to the rear part of the bolt shaft or shank portion have not lead to satisfactory results, since the chipping cannot be prevented in this manner.
- the collar does tend to strengthen the concrete material which becomes loosened by the driving operation.
- an anchoring device which includes a shank portion which is covered with a casing at least at the forward tip portion and up to a collar which is formed on the shank portion or on a driving barrel of a setting tool.
- the surrounding casing provides means for exerting force in the driving direction on the surface region of the concrete surrounding the drive in point.
- the casing provides this protection surface even before the driving process starts so that cracking and loosening of the target material is avoided.
- the concrete will not tend to chip away after the anchoring device is driven in.
- An anchoring device such as a bolt is advantageously provided with a collar on the shank portion directly adjacent the pointed tip portion and the tip portion is surrounded by a casing of an elastic material which advantageously has an exterior diameter which increases toward the point.
- the casing provides means for insuring that the driving power which acts from the setting ICC tool driving piston to a collar portion of the setting element is transmitted by a surrounding casing at the tip portion to the target material in a wide area surrounding the drive in point. Shearing stresses are thus reduced from the outset and the loosening of the concrete and its subsequent chipping are avoided.
- the casing must comprise an elastic deformable material so that it is deformed but not destroyed by the driving in operation.
- Securing devices which carry plastic caps on the pointed parts but as tests have shown, such devices do not prevent the occurrence of shearing stresses in a receiving material such as concrete, since they are not in an operative connection with the bolt which transmits the driving power.
- the pressure transmitted to the cap from the point of the bolt at the start of the driving process with such devices is completely insuicient.
- anchoring devices which include a casing surrounding the entire shaft of the bolt provides a good guidance and sealing of the bolt in the barrel of the driving gun and also insures the straight attachment of the bolt to the target material.
- the casing extends from the point to a collar provided between the head and the shaft portion but such a bolt cannot be used in the sense of the invention because the material forming the casing can be easily destroyed.
- the casing does not provide a sufficient transmission of power.
- the casings of these known elements are usually uniform in diameter and they do not provide a relatively large bearing surface surrounding the point at which the anchoring device is to be driven into the receiving material.
- the securing device of the invention may thus include a collar which is formed by a transition from the shank portion to the head of the element but it is also possible to provide a collar as an extension of the shaft portion at a location directly adjacent the pointed end.
- This provides an additional advantage in that the driving piston of a setting tool can act on the collar arranged at the lower portion of the bolt provided the driving piston of the setting tool is provided with a deep bore to accommodate the remaining shank portion and the head of the securing element.
- This arrangement makes it possible to drive in very long bolts by applying the driving force to the collar arranged at the pointed end.
- the casing advantageously comprises a plastic material and it functions not only in the manner set forth above, but also in preventing buckling and shearing of the bolt.
- an object of the present invention to provide an improved anchoring element construction and arrangement including a collar formation on the anchoring element at a spaced location from the pointed tip and a casing of elastic material surrounding the anchoring element and advantageously being widened at the forward end to provide a large bearing surface against the material to which the anchoring device is to be inserted.
- a further object of the invention is to provide an anchoring element which includes a collar formation thereon at a spaced location from the tip and which may be formed as a transition between the head of the element and the shank portion or as a widened collar forma* tion closed to the tip than the head portion, and including a surrounding casing extending from the tip up to the collar.
- a further object of the invention is to provide an anchoring device which is simple in design, rugged in construction and economical to manufacture.
- FIG. 1 is a sectional view of an anchoring element having a surrounding casing constructed in accordance with the invention
- FIG. 2 is a view similar to FIG. 1 of another embodiment of the invention.
- FIG. 3 is a View similar to FIG. 1 of still another embodiment of the invention.
- FIG. 4 is a transverse sectional view through a setting device and anchoring element constructed in accordance with another embodiment of the invention.
- FIG. 5 is a transverse sectional view through a receiving material with a securing element therein.
- FIG. 1 the invention embodied therein in FIG. 1 comprises a threaded bolt anchoring element generally designated having a head portion 12 which is extremely threaded at 12a.
- the anchoring element 10 also includes a shaft portion 13 and a point 14.
- the head portion 12 is made to a larger diameter than the shaft portion and the transmission between the shaft portion 13 and the head portion forms a collar 1'6.
- a casing 15 of an elastic material such as a palstic extends from the collar 16 to the point 14.
- the outside diameter of the casing increases from the collar to the point 14 in order to provide a wide bearing surface at the target material and to facilitate the deformation of the casing.
- a collar 26 is arranged 0n a shaft portion 23 of a bolt or securing element generally designated 20.
- the head portion 22 is provided with an external head 22a and it is made to the same diameter as the shaft portion 23.
- the collar is located close to the pointed end 24 and the pointed Vend 24 is surrounded by a casing 25 of elastic material which extends from the point up to the collar 26.
- a set- -bolt anchoring element generally designated which does not have any exterior thread on a head portion 32.
- the shaft portion 36 terminates in a point 34.
- the head portion 32 has a larger diameter than the shaft portion 33 and forms a collar 36 with the shaft portion.
- An exterior casing 35 of an elastic deformable material extends from the collar 36 to the point 34.
- the casing 35 has a widened shoulder 35a so that the driving power will be transmitted to a wide range around the drive in point.
- a bolt securing element generally designated 40 having a head portion 42 carrying an external thread 42a and a shaft portion 43 terminating in a point 44.
- the shaft portion 43 is surrounded by a casing 45 of an elastic deformable material which extends from a point up to a collar which, in this instance, is formed by the lower tip or annular portion 46a of a driving piston 46 of a setting tool having an exterior barrel 47.
- the setting tool 46 also includes a bore 46b into which the head portion 42 of the securing element 40' extends.
- the surrounding casing 45 is tapered from the location of the collar formed by the surrounding portion 46a of the drive piston 46 to the end adjacent the point 45 at a location overlying the receiving material or concrete 41.
- the casing 45 thus is provided with a shoulder portion 45a which rests on the target material 41.
- the casing 45 contacts the barrel 47 at the transition of the widened outer portion 47a and thus provides a means for guiding the bolt 40 during the Setting operation.
- FIG. 5 there is shown a bolt generally designated 50 of the type indicated in FIG. 4 by the configuration shown in FIG. 5 by the same driving process.
- the casing 55 can be screwed off the threaded end 52a of the head portion 52 of the anchoring device 50.
- the casing 55 also protects the bolt shaft 53 and the point 54, since it counteracts any shearing forces which would act on the bolt shaft.
- An advantageous plastic for the casing of each of the embodiments is a polyethylene.
- An anchoring element comprising an elongated shank portion, a head portion adjacent one end of said shank portion, said shank portion terminating at its opposite end in a pointed tip, and a collar of increased dimension formed at a spaced location from said pointed tip, a casing surrounding said shaft portion between said pointed tip and said collar and being of an elastic deformable material, said head portion and said shaft portion being substantially the same diameter, said collar comprising an exterior driving piston surrounding said head portion and extending to said shaft portion, said easing extending from the surounding drive piston to the pointed tip end and including a widened shoulder portion adjacent the pointed tip end adapted to rest on a target and a tapered portion from said widened shoulder portion tapered outwardly in a direction from said head portion to said tip, and a driving tool barrel including a rst portion surrounding said driving piston and a second widened portion surrounding said shoulder portion of said easing.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dowels (AREA)
- Joining Of Building Structures In Genera (AREA)
- Prostheses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19671625367 DE1625367C3 (de) | 1967-11-13 | 1967-11-13 | Bolzen zum Eintreiben in feste, spröde Materialien |
Publications (1)
Publication Number | Publication Date |
---|---|
US3491648A true US3491648A (en) | 1970-01-27 |
Family
ID=5682863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US770759A Expired - Lifetime US3491648A (en) | 1967-11-13 | 1968-10-25 | Anchoring element construction |
Country Status (6)
Country | Link |
---|---|
US (1) | US3491648A (fi) |
AT (1) | AT296180B (fi) |
FI (1) | FI48380C (fi) |
FR (1) | FR1591475A (fi) |
GB (1) | GB1235870A (fi) |
SE (1) | SE350104B (fi) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3955462A (en) * | 1972-04-21 | 1976-05-11 | Oswald Willy Thorsman | Fastener with deformable portion for guiding pins or the like |
EP0143579A1 (en) * | 1983-11-25 | 1985-06-05 | Olin Corporation | Pin-type fasteners for use with power driven tools and process for the manufacture thereof |
US5624220A (en) * | 1994-09-15 | 1997-04-29 | Hitti Aktiengesellschaft | Attachment member including a nail and a prestressing element |
US20120114446A1 (en) * | 2010-11-04 | 2012-05-10 | Hilti Aktiengesellschaft | Fastening device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990015261A1 (en) * | 1989-05-30 | 1990-12-13 | Ramset Fasteners (Aust.) Pty. Limited | A fastener assembly |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE529320A (fi) * | 1953-12-09 | |||
US2724116A (en) * | 1951-07-12 | 1955-11-22 | Termet Pierre | Explosively actuated fastener driving tool |
DE945290C (de) * | 1950-05-12 | 1956-07-05 | Langensiepen Kg M | Patrone fuer Bolzenschiessvorrichtungen |
GB851403A (en) * | 1956-10-18 | 1960-10-19 | Fur Montage Technik Anstalt | Improvements relating to anchoring pins |
US3377903A (en) * | 1964-11-10 | 1968-04-16 | Korte Wilhelmus Everardus | Method of fastening an article by means of a bolt to be shot into said article, and means for carrying out said method |
-
1968
- 1968-10-01 AT AT956768A patent/AT296180B/de active
- 1968-10-14 GB GB48510/68A patent/GB1235870A/en not_active Expired
- 1968-10-25 US US770759A patent/US3491648A/en not_active Expired - Lifetime
- 1968-10-28 FI FI683052A patent/FI48380C/fi active
- 1968-10-31 SE SE14786/68A patent/SE350104B/xx unknown
- 1968-11-13 FR FR1591475D patent/FR1591475A/fr not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE945290C (de) * | 1950-05-12 | 1956-07-05 | Langensiepen Kg M | Patrone fuer Bolzenschiessvorrichtungen |
US2724116A (en) * | 1951-07-12 | 1955-11-22 | Termet Pierre | Explosively actuated fastener driving tool |
BE529320A (fi) * | 1953-12-09 | |||
GB851403A (en) * | 1956-10-18 | 1960-10-19 | Fur Montage Technik Anstalt | Improvements relating to anchoring pins |
US3377903A (en) * | 1964-11-10 | 1968-04-16 | Korte Wilhelmus Everardus | Method of fastening an article by means of a bolt to be shot into said article, and means for carrying out said method |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3955462A (en) * | 1972-04-21 | 1976-05-11 | Oswald Willy Thorsman | Fastener with deformable portion for guiding pins or the like |
EP0143579A1 (en) * | 1983-11-25 | 1985-06-05 | Olin Corporation | Pin-type fasteners for use with power driven tools and process for the manufacture thereof |
US5624220A (en) * | 1994-09-15 | 1997-04-29 | Hitti Aktiengesellschaft | Attachment member including a nail and a prestressing element |
US20120114446A1 (en) * | 2010-11-04 | 2012-05-10 | Hilti Aktiengesellschaft | Fastening device |
US8926250B2 (en) * | 2010-11-04 | 2015-01-06 | Hilti Aktiengesellschaft | Fastening device |
Also Published As
Publication number | Publication date |
---|---|
GB1235870A (en) | 1971-06-16 |
DE1625367A1 (de) | 1970-06-25 |
DE1625367B2 (de) | 1975-08-07 |
FI48380C (fi) | 1974-09-10 |
FR1591475A (fi) | 1970-04-27 |
FI48380B (fi) | 1974-05-31 |
AT296180B (de) | 1972-02-10 |
SE350104B (fi) | 1972-10-16 |
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