CA1151449A - Socket retaining ring - Google Patents
Socket retaining ringInfo
- Publication number
- CA1151449A CA1151449A CA000373107A CA373107A CA1151449A CA 1151449 A CA1151449 A CA 1151449A CA 000373107 A CA000373107 A CA 000373107A CA 373107 A CA373107 A CA 373107A CA 1151449 A CA1151449 A CA 1151449A
- Authority
- CA
- Canada
- Prior art keywords
- ring
- socket
- plug
- pin
- peripheral groove
- 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
Landscapes
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
ABSTRACT
A socket retaining member 10 for use with power driven sockets 30 to fasten the sockets to the plug 18 of the drive tool 20. The retaining member 10 comprises a molded, one-piece elastomeric ring 12 having an integral, diametric leg 14 extending from one side substantially across the span of the ring. The retaining member is used with sockets which have a pinned interconnection to the plug of the drive tool by inserting the flexible diametric leg 14 of the member 10 into the retaining bore 26 and seating the ring in the peripheral groove 34 about the socket.
A socket retaining member 10 for use with power driven sockets 30 to fasten the sockets to the plug 18 of the drive tool 20. The retaining member 10 comprises a molded, one-piece elastomeric ring 12 having an integral, diametric leg 14 extending from one side substantially across the span of the ring. The retaining member is used with sockets which have a pinned interconnection to the plug of the drive tool by inserting the flexible diametric leg 14 of the member 10 into the retaining bore 26 and seating the ring in the peripheral groove 34 about the socket.
Description
- ~is~
SOCKET RETAINING RING
~ . _ TECHNICAL FIELD
This invention relates to power driven wrenches which ccmmon].y have interchangeable sockets attached to a shaft driven by a pneumatic motor, and in particular relates to a retainer to secure the sockets to the shaft and prevent their accidental dischar~e.
, ~k 1~51~49 - BACKGROU~D ART
Large diameter, power driven sockets are commonly secured to the drive plug of the power drive tool by inserting a steel pin into aligned bores between the socket and drive plug. The socket is commonly provided with a peripheral groove intersecting the bore which receives the retaining pin and an O-ring is seated in this peripheral groove to prevent accidental dislodgement of the steel pin from the aligned bores.
Since the retaining pin and O-ring are separate elements, one or both of these elements can be lost or unavailable, and workmen frequently use the tools without these elements. Workmen using the tool with the steel pin but without the retaining O-ring have been injured when the pin has dislodged and str~ck them. Steel pins also can jam in the receiving b~res when the drive surfaces of the drive plug or of the retaining hole in the socket become worn and misaligned.
....~.......................
l~S~ 9 !,.
-3~
, BRIEF STATEMENT OF THE INVENTION
The difficulties and hazards of the prior socket retainer pin and ring are avoided by the one-piece molded retainer ring of the invention. The retainer ring comprises a one-piece, molded elastomer ring and diametric pin. The pin is formed integrally i;
with the O-ring and depends from one side thereof, projecting substantially across the entire diameter of the ring. Since the pin and ring are formed of a single piece, the opportunity to loose one of the -retainer elements is eliminated. Since the pin and ring are formed of flexible, elastomeric material, the pin can be readily inserted into the aligned bores through the socket and plug of the drive tool by bending the pin while sliding the ring along the socket wall until the ring seats in the peripheral groove which intersects the bores through the socket.
The pin is formed of a flexible elastomer and, accordingly, can not cause injury or damage. .
Furthermore, the ring can not be readily seated in the peripheral groov,e without insertion or the diametric pin since otherwise the pin would be clearly visible to the user of the tool, indicating that it has not been seated in the retaining aligned bores. ~ -..
, , .
, . . . . . . . . ,, , ,, . .. . --`
., 1151~49 !
BRIEF DESCRIPTION OF THE DRAWINGS
.
The invention will be described with reference to the FIGURES of which:
FIGURE 1 is a perspective view of the retaining -ring and integral diametric pin of the invention;
FIGURE 2 is an exploded view of the assembly of :~
a drive tool plug, socket and retaining ring; and FIGURE 3 is an elevational view of the drive plug, socket and retaining ring of the invention.
- -~i5l !
- DESCRIPTION 0~ PREFERRED EMBODIMENT
Referring now to FIGURE 1, the invention comprises a retaining member 10 which comprises a ring 12 with a circular cross-section, similar to that of a conventional O-ring. Ring 12 is formed with an integral, dependent leg 14 which depends from one side of the ring portion of the retainer member 10.
This leg also can be formed with a circular cross-section of the same diameter as that of the ' ring 12. The pin 14 extends diametrically across the ring 12 and terminates a distance X, short of contact with the opposite side of ring 14. , The retaining member 10 is formed of a resilient, flexible elastomer such as natural and synthetic rubbers, e.g., homo-polymers and co-polymers of acrylonitrile, butadiene and styrene, neoprene, i~oprene, etc. Preferably, the elastomer material used for the fabrication of the retaining member 10 `
has a tensile strength at least equal to 5000 psi to provide a long service life and to avoid any failure under shear during its use. A preferred material , for use in the invention comprises molded ' polyurethane synthetic rubber which has been found , to have thé desirable strengt,h and longevity. ' .
Referring now to,,FIGURE 2, there appears an expl~ded view of the assembly of a drive plug, socket and retainer member of the invention. The drive plug 18 ;,' of the drive tool 20 is of conventional construction.
Typically, the drive plug has a square shank with flats 22, 26, and the like. The drive tool also !-typically has a transverse bore 26 for receiving a ~`~
retaining pin which, heretofore, has been a steel pin. ~' ~ , .,,, . . . . . , ....... . ... . ,, .. , . . ~ ...... . ...... .. ..
115~
The socket 30 is,also of conventional construction with an outer cylindrical wall 32 which has a peripheral groove 3~ near its drive end 36 and a transverse bore-38 which intersects the peripheral groove 34. The socket 30 has a throughbore having an interiorly broached surface 40 at the socket end 42. The socket end is conventional in construction and has 6, 8, or 12 points to fit conventional sized nuts. The throughbore of the lo socket is of sufficient length to provide the desired bolt clearance. The drive end of the throughbore has internal flats to fit the standard drive, t'ypically these flats provide a square interior configurat1on to the internal drive end of the socket.
The retainer member 10 of the invention is used in the assembly in the illustrated manner with the flexible leg 14 insertable into the throughbore 38 which is aligned with th~ bore 24 of the square-shanked plug 18 of the drive unit. The retaining member of the invention is illustrated as the member is inserted or withdrawn from engagement in the aligned throughbores of the socket and plug ~
members. !~' Referr1ng now to FIGURE 3, the assembly is shown '~
in elevational, cross-sectional view. As there illustrated, the socket 30 is mounted to the drive plug 18 of unit 20. In this position, the ;
rotational force is transmitted through the square-shanked drive plug directly to the internal flats -of the drive end 36 of socket 30. The flexible leg 1.
14 is seated in the aligned bore 38 of the socket and bore 24, drive plug and, in this position, ~, !
. .. .. . . . . .. .. . . . . . .. . . . .. .
restrains any axial separation of these members.
The f'lexible leg 14 is retained in the aligned, receiving bores by the surrounding ring portion 12 of the retaining member 10 which is elastically seated in the peripheral groove 34 of the socket 30.
The retaining leg 14 and ring 12 of the retaining member are a single, integrally molded body and, accordingly, one of these èlements ca,n not be used without the other. If` one attempted to insert the leg member 14 without seating the ring portion 12 about the socket, the error would be obvious since the ring portion would hang loosely from the assembly. Similarly, if the ring portion 12 were seated in the peripheral groove 34 without first inserting the leg ~lement 14, the leg element would project from the assembly, attracting attentic,n to the fact that it was not properly seated.
, .
.: -.
- . .: .
, l~lS 1~L,~4~
ADVANTAGEOUS EFFECTS OF THE INVENTION
The invention provides &reater safety and security in the attachment Gf sockets to poh~er driven wrenches than in the pricr devices.
The one-piece pin and ring element of the invention is formed entire~y cf flexible, elastic material and can not cause in~ury to workmen. The ring cannot be seated in the peripheral groove of the socket without insertion of its pin, thus alcc insuring safety of the assembly. The invention eliminates the prior use of lo a metal retaining pin ard thus avoids the possibility of sockets becoming jammed to the tool shaft by bent metal pins. Further, the pin and ring of the invention are a single e:lement ard neither the pin or ring can be used without the cther.
,~
,, O
;
' ~
. . ' - ' , "
SOCKET RETAINING RING
~ . _ TECHNICAL FIELD
This invention relates to power driven wrenches which ccmmon].y have interchangeable sockets attached to a shaft driven by a pneumatic motor, and in particular relates to a retainer to secure the sockets to the shaft and prevent their accidental dischar~e.
, ~k 1~51~49 - BACKGROU~D ART
Large diameter, power driven sockets are commonly secured to the drive plug of the power drive tool by inserting a steel pin into aligned bores between the socket and drive plug. The socket is commonly provided with a peripheral groove intersecting the bore which receives the retaining pin and an O-ring is seated in this peripheral groove to prevent accidental dislodgement of the steel pin from the aligned bores.
Since the retaining pin and O-ring are separate elements, one or both of these elements can be lost or unavailable, and workmen frequently use the tools without these elements. Workmen using the tool with the steel pin but without the retaining O-ring have been injured when the pin has dislodged and str~ck them. Steel pins also can jam in the receiving b~res when the drive surfaces of the drive plug or of the retaining hole in the socket become worn and misaligned.
....~.......................
l~S~ 9 !,.
-3~
, BRIEF STATEMENT OF THE INVENTION
The difficulties and hazards of the prior socket retainer pin and ring are avoided by the one-piece molded retainer ring of the invention. The retainer ring comprises a one-piece, molded elastomer ring and diametric pin. The pin is formed integrally i;
with the O-ring and depends from one side thereof, projecting substantially across the entire diameter of the ring. Since the pin and ring are formed of a single piece, the opportunity to loose one of the -retainer elements is eliminated. Since the pin and ring are formed of flexible, elastomeric material, the pin can be readily inserted into the aligned bores through the socket and plug of the drive tool by bending the pin while sliding the ring along the socket wall until the ring seats in the peripheral groove which intersects the bores through the socket.
The pin is formed of a flexible elastomer and, accordingly, can not cause injury or damage. .
Furthermore, the ring can not be readily seated in the peripheral groov,e without insertion or the diametric pin since otherwise the pin would be clearly visible to the user of the tool, indicating that it has not been seated in the retaining aligned bores. ~ -..
, , .
, . . . . . . . . ,, , ,, . .. . --`
., 1151~49 !
BRIEF DESCRIPTION OF THE DRAWINGS
.
The invention will be described with reference to the FIGURES of which:
FIGURE 1 is a perspective view of the retaining -ring and integral diametric pin of the invention;
FIGURE 2 is an exploded view of the assembly of :~
a drive tool plug, socket and retaining ring; and FIGURE 3 is an elevational view of the drive plug, socket and retaining ring of the invention.
- -~i5l !
- DESCRIPTION 0~ PREFERRED EMBODIMENT
Referring now to FIGURE 1, the invention comprises a retaining member 10 which comprises a ring 12 with a circular cross-section, similar to that of a conventional O-ring. Ring 12 is formed with an integral, dependent leg 14 which depends from one side of the ring portion of the retainer member 10.
This leg also can be formed with a circular cross-section of the same diameter as that of the ' ring 12. The pin 14 extends diametrically across the ring 12 and terminates a distance X, short of contact with the opposite side of ring 14. , The retaining member 10 is formed of a resilient, flexible elastomer such as natural and synthetic rubbers, e.g., homo-polymers and co-polymers of acrylonitrile, butadiene and styrene, neoprene, i~oprene, etc. Preferably, the elastomer material used for the fabrication of the retaining member 10 `
has a tensile strength at least equal to 5000 psi to provide a long service life and to avoid any failure under shear during its use. A preferred material , for use in the invention comprises molded ' polyurethane synthetic rubber which has been found , to have thé desirable strengt,h and longevity. ' .
Referring now to,,FIGURE 2, there appears an expl~ded view of the assembly of a drive plug, socket and retainer member of the invention. The drive plug 18 ;,' of the drive tool 20 is of conventional construction.
Typically, the drive plug has a square shank with flats 22, 26, and the like. The drive tool also !-typically has a transverse bore 26 for receiving a ~`~
retaining pin which, heretofore, has been a steel pin. ~' ~ , .,,, . . . . . , ....... . ... . ,, .. , . . ~ ...... . ...... .. ..
115~
The socket 30 is,also of conventional construction with an outer cylindrical wall 32 which has a peripheral groove 3~ near its drive end 36 and a transverse bore-38 which intersects the peripheral groove 34. The socket 30 has a throughbore having an interiorly broached surface 40 at the socket end 42. The socket end is conventional in construction and has 6, 8, or 12 points to fit conventional sized nuts. The throughbore of the lo socket is of sufficient length to provide the desired bolt clearance. The drive end of the throughbore has internal flats to fit the standard drive, t'ypically these flats provide a square interior configurat1on to the internal drive end of the socket.
The retainer member 10 of the invention is used in the assembly in the illustrated manner with the flexible leg 14 insertable into the throughbore 38 which is aligned with th~ bore 24 of the square-shanked plug 18 of the drive unit. The retaining member of the invention is illustrated as the member is inserted or withdrawn from engagement in the aligned throughbores of the socket and plug ~
members. !~' Referr1ng now to FIGURE 3, the assembly is shown '~
in elevational, cross-sectional view. As there illustrated, the socket 30 is mounted to the drive plug 18 of unit 20. In this position, the ;
rotational force is transmitted through the square-shanked drive plug directly to the internal flats -of the drive end 36 of socket 30. The flexible leg 1.
14 is seated in the aligned bore 38 of the socket and bore 24, drive plug and, in this position, ~, !
. .. .. . . . . .. .. . . . . . .. . . . .. .
restrains any axial separation of these members.
The f'lexible leg 14 is retained in the aligned, receiving bores by the surrounding ring portion 12 of the retaining member 10 which is elastically seated in the peripheral groove 34 of the socket 30.
The retaining leg 14 and ring 12 of the retaining member are a single, integrally molded body and, accordingly, one of these èlements ca,n not be used without the other. If` one attempted to insert the leg member 14 without seating the ring portion 12 about the socket, the error would be obvious since the ring portion would hang loosely from the assembly. Similarly, if the ring portion 12 were seated in the peripheral groove 34 without first inserting the leg ~lement 14, the leg element would project from the assembly, attracting attentic,n to the fact that it was not properly seated.
, .
.: -.
- . .: .
, l~lS 1~L,~4~
ADVANTAGEOUS EFFECTS OF THE INVENTION
The invention provides &reater safety and security in the attachment Gf sockets to poh~er driven wrenches than in the pricr devices.
The one-piece pin and ring element of the invention is formed entire~y cf flexible, elastic material and can not cause in~ury to workmen. The ring cannot be seated in the peripheral groove of the socket without insertion of its pin, thus alcc insuring safety of the assembly. The invention eliminates the prior use of lo a metal retaining pin ard thus avoids the possibility of sockets becoming jammed to the tool shaft by bent metal pins. Further, the pin and ring of the invention are a single e:lement ard neither the pin or ring can be used without the cther.
,~
,, O
;
' ~
. . ' - ' , "
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A retainer ring to retain power driven sockets to a plug end of a shaft by a pinned interconnection wherein said socket has a receiving hole for said plug end, said plug and hole have mated and cooperative flat surfaces for rotational interconnection, said plug end has a radial bore and said socket has two opposite radial bores to align with the radial bore of said plug and to receive a retaining pin for their axial interconnection with a peripheral groove for O-ring pin retainers which comprises:
a one-piece, molded elastomeric O-ring of a diameter to seat in the peripheral groove of said socket and an integrally molded elastomeric diametric pin means dependent from the inside and extending across the majority of the span of said O-ring and received in said radial bore of said plug and both said aligned bores of said socket.
a one-piece, molded elastomeric O-ring of a diameter to seat in the peripheral groove of said socket and an integrally molded elastomeric diametric pin means dependent from the inside and extending across the majority of the span of said O-ring and received in said radial bore of said plug and both said aligned bores of said socket.
2. The retainer ring of claim 1 wherein said ring is molded of an elastomer having a tensile strength at least equal to 5000/psi.
3. The retainer ring of claim 2 molded of polyurethane.
4. In the combination of a shaft and detachable member wherein said member has a retaining hole to receive a plug end of said shaft and wherein said receiving hole and plug end have mated and cooperative flat surfaces for rotational interconnection and said plug end has a radial bore and said member has two aligned radial bores to align with the radial bore of said plug and to receive a retaining pin for their axial interconnection and a peripheral groove about said detachable member intersecting its radial bore, the improvement which comprises:
a one-piece, molded elastomeric retainer ring seated in said peripheral groove of said member and having an integrally molded elastomeric diametric pin dependent from one side of said ring and received in said bore of said plug and said two aligned bores of said member.
a one-piece, molded elastomeric retainer ring seated in said peripheral groove of said member and having an integrally molded elastomeric diametric pin dependent from one side of said ring and received in said bore of said plug and said two aligned bores of said member.
5. The combination of claim 4 wherein said member is a socket and said shaft is the drive shaft of a socket drive tool.
6. The combination of claim 5 wherein said socket drive tool is a power driven tool.
7. The combination of claim 6 wherein said power driven tool is a pneumatic drive tool.
8. The combination of claim 4 wherein said ring is molded of polyurethane synthetic rubber having a tensile strength of at least 5000 psi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000373107A CA1151449A (en) | 1981-03-16 | 1981-03-16 | Socket retaining ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000373107A CA1151449A (en) | 1981-03-16 | 1981-03-16 | Socket retaining ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1151449A true CA1151449A (en) | 1983-08-09 |
Family
ID=4119460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000373107A Expired CA1151449A (en) | 1981-03-16 | 1981-03-16 | Socket retaining ring |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1151449A (en) |
-
1981
- 1981-03-16 CA CA000373107A patent/CA1151449A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |