CA1085643A - Safety cap for the projecting ends of rebar, pipe and the like - Google Patents
Safety cap for the projecting ends of rebar, pipe and the likeInfo
- Publication number
- CA1085643A CA1085643A CA279,248A CA279248A CA1085643A CA 1085643 A CA1085643 A CA 1085643A CA 279248 A CA279248 A CA 279248A CA 1085643 A CA1085643 A CA 1085643A
- Authority
- CA
- Canada
- Prior art keywords
- rebar
- safety cap
- impact head
- cap
- hollow
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/161—Protective caps for the ends of reinforcing bars
-
- 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
- E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
- E04G21/3252—Protections, e.g. cover, caps, against impaling on starter reinforcement bars
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Buffer Packaging (AREA)
Abstract
ABSTRACT
A safety cap for rebar (concrete reinforcing steel) and pipe ends protecting, for example, from unfinished construction work protects workmen and passersby from injury resulting from striking the projections. The cap comprises an integral, hollow, cylindrical body of resiliently deformable plastic material closed at one end and open at the other. At its closed end the body mounts a radial impact head of enlarged diameter. The open end of the body is slit longitudinally to provide an expandable gripping lip. The hollow bore is stepped to provide shoulders accommodating rebar and pipe ends of varying diameter.
A safety cap for rebar (concrete reinforcing steel) and pipe ends protecting, for example, from unfinished construction work protects workmen and passersby from injury resulting from striking the projections. The cap comprises an integral, hollow, cylindrical body of resiliently deformable plastic material closed at one end and open at the other. At its closed end the body mounts a radial impact head of enlarged diameter. The open end of the body is slit longitudinally to provide an expandable gripping lip. The hollow bore is stepped to provide shoulders accommodating rebar and pipe ends of varying diameter.
Description
:
~S6;~3 ~
SAFETY CAP FOR THE PROJECTING ENDS OF
REBAR, PIPE AND THE LIKE
This invention pertains to a safety cap for placement over the projecting ends of rebar, pipe and the like.
Particularly during the construction of buildings, there ~ ;
occur situations in which the ends of rebar, pipes, conduits, an-chor bolts, ties and like materials extend vertically, horizontally or at an angle from structures in which they are contained. Such ;~ -ends are sharp, and present a distinct hazard to workmen and pas-sersby who inadvertently stumble against them, and as a result are bruised, abraded, or even stabbed by the projecting sharp ends.
It is the object of the present invention ~o provide a safety cap for placement over the ends of such projections, thereby pro-~ecting passersby from injury.
Other important obiects o the invention are the provisions of a safety cap for the projecting ends of rebar, pipe and the like objects which grips the object securely, which may be applied easily, ~-; which after use may be removed from reuse, which accommodates various sizes of rebar and pipe ends, which may be left on the projecting ends permanently if desired; and which may be provided in a variety `-of bright colors for easy visibility.
The foregoing and other ob;ects of the invention are accom- ;
plished by the provisions o a safety cap comprising an lntegral, hollow, cylindrical body of resiliently deformable plastic material closed at one end and open at the other. The cap has a hollow body characterized by a stepped bore of progressively smaller internal diameter in the direction of the closed end, thereby providing at longitudinally spaced intervals shoulders for abutment by rebar and pipe ends of varying diameter.
- The closed end of the body includes a radially extending impact head, which preferably is flat and flexible. The open end of the body is of restricted diameter, forming a lip. Also, it is slit longitudinally at spaced radial intervals ~o provide an ex-3~ :
~ 3 pandable gripping segment. The in~erior of the hollow body is pravided with a plurality of inwardly extending projections dimension-ed to engage frictionally the side walls of the rebar and pipe ends, thereby in use retaining the cap thereon.
The invention is described herein wi~h particular reference to the drawings wherein:
Fig. 1 is a fragmentary schematic view illustrating the here- ~-indescribed safety cap as applied to the projecting end of a length of rebar.
Figo 2 is a top plan view of the safety cap.
Fig. 3 is a longitudinal section o~ the safety cap taken a- ~ -long line 3-3 of Fig. 2 and Fig. 4 is a transverse sectional view of the safety cap tak-en along line 4-4 of Fig. 3.
As shown in Figo 1, the safety cap 10 of our invention may be applied to the projecting end of a length of rebar 12 which ex-tends outwardly from concrete structural element 14. Such project-ions are commonplace on construction sites and may comprise the pro-jecting ends not only of rebar but also of pipe, conduit, anchor 20 bolts, heavy wire, and the like all of which are contemplated here-in as being suitable subjects for the application of the safety cap of our invention.
Such projecting ends are sharp and present a distinct hazard to workmen and passersby who inadvertently s~rike or stumble against them.
As shown particularly in Fig. 3, safety cap 10 comprise~ an integral hollow cylindrical body 16 of resiliently deformable plas-tic material. Such material is preferably brightly colored so that the cap may be seen readily when it is mounted on the projectionO
Hollow cylindrical body 16 is closed at one end with an im-pact head 18. This preferably is flat and relatively thin and flex-ible. In effect it increases the effective diameter of the project-~ LV8516~3 ing end and presents a resilient, flexible, contact surface whic cushions the impact of a person striking against the projection. ;~
Preferably, the impact head has a notch 20, as shown in `
Fig. 2. This is dimensioned to receive the shank o an adjacent rebar or pipe end in the event that the cap is to be applied in a cluster of such ends, as commonly i$ present at construction sites. `~
The exterior surface 22 of the open end of the hollow cy- `
lindrical body preferably is inwardly tapered. Also, it is provid-ed with a lip 2~ of reduced diameter for gripping the side walls of the projecting end to which the cap is applied. ;
The open end o~ the body is further provided with a plur- -ality of radially spaced, longitudinally extending grooves 26. In the illustrated form o~ the invention ~here are four such grooves spaced at 90 from each other. These define ~ingers 28 which resil- ' iently grip the projecting end, further retaining the cap thereon.
The hollow bore o the cap is characterized by a stepped configuration, being of progressively decreasing internal diameter inwardly of the open end. There thus are provided at longitudinally spaced intervals along the bore a plurality of shoulders 30,32,34 Of progressively decreasing extent. In a typical instance, such shoulders may define internal diameter dimensions of 1/4 inch,3/8 inch and lf2 inch, respectively thereby making the cap unlversally ; applicable to projecting rebar or pipe ends of corresponding diam-eter.
Further to assist in gripping the projecting end and in mounting the cap securely thereon, there are provided aplurality of inwardly extending projections 36, 38, 40. These preferably are provided in rings at spaced longitudinal intervals and are asso- ~
ciated respectively with shoulders 30, 32, 34. `
Accordingly, when the cap 10 is placed over the sharp ~ proj~cting end of a length of rebar 12, the rebar end will first - wedge open the slit end of the cap, and ent~r the hollow body.
f Depending upon its external diameter, it then will seat it-5i6~3 ~ ~
self against the inner surface of impact head 18, or one of should-ers 30, 32, 34.
In place, it will be retained releasably by frictional en-gagement not only with stretched lip 24, but also with the engaged ones of inwardly extending projections 36, 38, 40.
The cap thus is secured in place for as long as the hazard exists. Being brightly colored, it warns workmen and passersby of the presence of the projecting ends of the rebar or pipe. However, it ~nadvertent contact with such projecting ends should occur, the workmen or passerby is protected from contact with sharp edges.
Instead, he strikes against the yielding impact head 18 which mini-mizes the injury, if any such injury occurs.
When the hazard no longer exists, the caps easily may be removed and applied to similar uses in other situations.
' ., .
~':.'.
~S6;~3 ~
SAFETY CAP FOR THE PROJECTING ENDS OF
REBAR, PIPE AND THE LIKE
This invention pertains to a safety cap for placement over the projecting ends of rebar, pipe and the like.
Particularly during the construction of buildings, there ~ ;
occur situations in which the ends of rebar, pipes, conduits, an-chor bolts, ties and like materials extend vertically, horizontally or at an angle from structures in which they are contained. Such ;~ -ends are sharp, and present a distinct hazard to workmen and pas-sersby who inadvertently stumble against them, and as a result are bruised, abraded, or even stabbed by the projecting sharp ends.
It is the object of the present invention ~o provide a safety cap for placement over the ends of such projections, thereby pro-~ecting passersby from injury.
Other important obiects o the invention are the provisions of a safety cap for the projecting ends of rebar, pipe and the like objects which grips the object securely, which may be applied easily, ~-; which after use may be removed from reuse, which accommodates various sizes of rebar and pipe ends, which may be left on the projecting ends permanently if desired; and which may be provided in a variety `-of bright colors for easy visibility.
The foregoing and other ob;ects of the invention are accom- ;
plished by the provisions o a safety cap comprising an lntegral, hollow, cylindrical body of resiliently deformable plastic material closed at one end and open at the other. The cap has a hollow body characterized by a stepped bore of progressively smaller internal diameter in the direction of the closed end, thereby providing at longitudinally spaced intervals shoulders for abutment by rebar and pipe ends of varying diameter.
- The closed end of the body includes a radially extending impact head, which preferably is flat and flexible. The open end of the body is of restricted diameter, forming a lip. Also, it is slit longitudinally at spaced radial intervals ~o provide an ex-3~ :
~ 3 pandable gripping segment. The in~erior of the hollow body is pravided with a plurality of inwardly extending projections dimension-ed to engage frictionally the side walls of the rebar and pipe ends, thereby in use retaining the cap thereon.
The invention is described herein wi~h particular reference to the drawings wherein:
Fig. 1 is a fragmentary schematic view illustrating the here- ~-indescribed safety cap as applied to the projecting end of a length of rebar.
Figo 2 is a top plan view of the safety cap.
Fig. 3 is a longitudinal section o~ the safety cap taken a- ~ -long line 3-3 of Fig. 2 and Fig. 4 is a transverse sectional view of the safety cap tak-en along line 4-4 of Fig. 3.
As shown in Figo 1, the safety cap 10 of our invention may be applied to the projecting end of a length of rebar 12 which ex-tends outwardly from concrete structural element 14. Such project-ions are commonplace on construction sites and may comprise the pro-jecting ends not only of rebar but also of pipe, conduit, anchor 20 bolts, heavy wire, and the like all of which are contemplated here-in as being suitable subjects for the application of the safety cap of our invention.
Such projecting ends are sharp and present a distinct hazard to workmen and passersby who inadvertently s~rike or stumble against them.
As shown particularly in Fig. 3, safety cap 10 comprise~ an integral hollow cylindrical body 16 of resiliently deformable plas-tic material. Such material is preferably brightly colored so that the cap may be seen readily when it is mounted on the projectionO
Hollow cylindrical body 16 is closed at one end with an im-pact head 18. This preferably is flat and relatively thin and flex-ible. In effect it increases the effective diameter of the project-~ LV8516~3 ing end and presents a resilient, flexible, contact surface whic cushions the impact of a person striking against the projection. ;~
Preferably, the impact head has a notch 20, as shown in `
Fig. 2. This is dimensioned to receive the shank o an adjacent rebar or pipe end in the event that the cap is to be applied in a cluster of such ends, as commonly i$ present at construction sites. `~
The exterior surface 22 of the open end of the hollow cy- `
lindrical body preferably is inwardly tapered. Also, it is provid-ed with a lip 2~ of reduced diameter for gripping the side walls of the projecting end to which the cap is applied. ;
The open end o~ the body is further provided with a plur- -ality of radially spaced, longitudinally extending grooves 26. In the illustrated form o~ the invention ~here are four such grooves spaced at 90 from each other. These define ~ingers 28 which resil- ' iently grip the projecting end, further retaining the cap thereon.
The hollow bore o the cap is characterized by a stepped configuration, being of progressively decreasing internal diameter inwardly of the open end. There thus are provided at longitudinally spaced intervals along the bore a plurality of shoulders 30,32,34 Of progressively decreasing extent. In a typical instance, such shoulders may define internal diameter dimensions of 1/4 inch,3/8 inch and lf2 inch, respectively thereby making the cap unlversally ; applicable to projecting rebar or pipe ends of corresponding diam-eter.
Further to assist in gripping the projecting end and in mounting the cap securely thereon, there are provided aplurality of inwardly extending projections 36, 38, 40. These preferably are provided in rings at spaced longitudinal intervals and are asso- ~
ciated respectively with shoulders 30, 32, 34. `
Accordingly, when the cap 10 is placed over the sharp ~ proj~cting end of a length of rebar 12, the rebar end will first - wedge open the slit end of the cap, and ent~r the hollow body.
f Depending upon its external diameter, it then will seat it-5i6~3 ~ ~
self against the inner surface of impact head 18, or one of should-ers 30, 32, 34.
In place, it will be retained releasably by frictional en-gagement not only with stretched lip 24, but also with the engaged ones of inwardly extending projections 36, 38, 40.
The cap thus is secured in place for as long as the hazard exists. Being brightly colored, it warns workmen and passersby of the presence of the projecting ends of the rebar or pipe. However, it ~nadvertent contact with such projecting ends should occur, the workmen or passerby is protected from contact with sharp edges.
Instead, he strikes against the yielding impact head 18 which mini-mizes the injury, if any such injury occurs.
When the hazard no longer exists, the caps easily may be removed and applied to similar uses in other situations.
' ., .
~':.'.
Claims (2)
1. A safety cap for use on the projecting ends of rebars comprising:
a) an integral, hollow cylindrical body of resiliently deformable plastic material closed at one end and open at the other, b) the open end of the body being slotted longitudinally at the circumferentially spaced intervals to provide the plurality of longitudinally elongated resiliently expandable fingers and, c) ripping lips projecting radially inward from the fingers and defining rebar entrance opening of reduced diameter with respect to the inwardly adjacent bore of the hollow body, the inner surface of the lips diverging angularly outward to the outer ends of the fingers for guiding rebar into said entrance opening, d) the bore of the hollow body inwardly of the finger lips being set inwardly to a plurality of progressively decreasing diameters thereby forming a plurality of longitudinally spaced abutment shoulders of progressively decreasing diameters for the seating and abutment of rebar of varying diameters.
a) an integral, hollow cylindrical body of resiliently deformable plastic material closed at one end and open at the other, b) the open end of the body being slotted longitudinally at the circumferentially spaced intervals to provide the plurality of longitudinally elongated resiliently expandable fingers and, c) ripping lips projecting radially inward from the fingers and defining rebar entrance opening of reduced diameter with respect to the inwardly adjacent bore of the hollow body, the inner surface of the lips diverging angularly outward to the outer ends of the fingers for guiding rebar into said entrance opening, d) the bore of the hollow body inwardly of the finger lips being set inwardly to a plurality of progressively decreasing diameters thereby forming a plurality of longitudinally spaced abutment shoulders of progressively decreasing diameters for the seating and abutment of rebar of varying diameters.
2. The safety cap of claim 1 including an overhanging, resilient flexible impact head of generally circular contour extending radially outwardly from the closed end of the body, the impact head having a peripheral notch therein diverging outwardly to the periphery of the impact head, to receive the shank of an adjacent rebar end of a rebar cluster.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69500176A | 1976-06-11 | 1976-06-11 | |
| US695,001 | 1976-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1085643A true CA1085643A (en) | 1980-09-16 |
Family
ID=24791160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA279,248A Expired CA1085643A (en) | 1976-06-11 | 1977-05-26 | Safety cap for the projecting ends of rebar, pipe and the like |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1085643A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9133636B2 (en) | 2013-11-04 | 2015-09-15 | 0971065 B.C. Ltd. | Impalement prevention apparatus for extending overtop of and around the exposed ends of a plurality of spaced-apart reinforcing bars |
| US9567751B2 (en) | 2013-11-04 | 2017-02-14 | 0971065 B.C. Ltd. | Impalement prevention apparatus for extending overtop of and around the exposed ends of a plurality of spaced-apart reinforcing bars |
-
1977
- 1977-05-26 CA CA279,248A patent/CA1085643A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9133636B2 (en) | 2013-11-04 | 2015-09-15 | 0971065 B.C. Ltd. | Impalement prevention apparatus for extending overtop of and around the exposed ends of a plurality of spaced-apart reinforcing bars |
| US9567751B2 (en) | 2013-11-04 | 2017-02-14 | 0971065 B.C. Ltd. | Impalement prevention apparatus for extending overtop of and around the exposed ends of a plurality of spaced-apart reinforcing bars |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |