US3298072A - Bolted connector - Google Patents
Bolted connector Download PDFInfo
- Publication number
- US3298072A US3298072A US467812A US46781265A US3298072A US 3298072 A US3298072 A US 3298072A US 467812 A US467812 A US 467812A US 46781265 A US46781265 A US 46781265A US 3298072 A US3298072 A US 3298072A
- Authority
- US
- United States
- Prior art keywords
- nut
- pressure bar
- retainer member
- interlocking
- base
- 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
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000012858 resilient material Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon 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
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/04—Clamping or clipping connections
- F16B7/0433—Clamping or clipping connections for rods or tubes being in parallel relationship
-
- 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
- Y10T403/60—Biased catch or latch
-
- 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
- Y10T403/7182—Yoke or ring-type connector
Definitions
- This invention relates generally to U-bolt connectors known also as split, slotted, or bifuncated bolts, and more particularly to a pressure bar used in such a device for compressing therein the conductors, wires, or other parts which are to be clamped together.
- a nut is threaded to the outer surface of the legs of the bolt for urging the pressure bar against wires or parts positioned between the legs.
- the pressure bar is rotatably mounted to the nut, to permit the nut to rotate on the bolt while it linearly advances the pressure bar. This avoids rotary contact between the bar and the clamped parts.
- the pressure bar is assembled to the nut by an extension of the bar which forms a nut retainer.
- the bolt, nut and pressure bar are preferably made of high strength metal to withstand the forces developed in use.
- the higher the pressure applied the better the electrical contact between the conductors being joined. That is, high pressure lowers the electrical resistance of the joint and results in higher electrical joint efficiency.
- FIGURE 1 is a partially sectioned side elevation view of a U-bolt connector provided with a novel pressure bar and nut retainer in accordance with this invention
- FIGURE 2 is a transverse sectional view of the same taken in the plane 2-2 of FIGURE 1;
- FIGURES 3, 4 and 5 are side, end, and bottom views respectively of a modified form of pressure bar;
- FIG- URES 6 and 7 are side and end views of a modified form of retainer used to couple the modified pressure bar of FIGURE 3 to the nut.
- reference numeral 10 designates generally a U-bolt connector having a pair of parallel extending legs 12 and 14 which are threaded on their outer surfaces, as at 20, to receive a threaded nut 22.
- the force of the advancement is transmitted through pressure bar 24 to parts such as wire conductors 16 and 18 disposed between legs 12 and 14 which are thus clamped between the bar and head portion of the U-bolt.
- the pressure bar and base are provided with tongue 32 and complementary groove 34, respectively (shown in FIGURE 2), which may be dimensioned for forcible engagement or otherwise secured in position to interlock the one to the other.
- the base is provided with a pair of outwardly extending wings 36 which project through and beyond the nut 22, each of which includes a detent shoulder 38 spaced from the pressure bar 24 by a distance at least equal to or slightly greater than the axial length of the nut.
- the length of the base 30 along the side, as shown in FIGURE 1, is less than the inner diameter of the nut opening, and the thickness is slightly less than the space between the bolt legs, to permit the nut to be rotated into position on the legs of the U-bolt, while the pressure bar is driven linearly towards the conductors.
- the nut however, directly compresses the pressure bar into clamping engagement with the conductors, so that no pressure is applied to the base.
- the base therefore can be made of low strength material such as any well known plastic.
- the pressure bar 24a is provided with an integral rivet 32a where it may be upset in conventional rivet fashion to form a permanent attachment between bar and base.
- the bar may be provided with recesses 51 formed to engage mating ribs or projections 52 on the base.
- the wings 36a may be given considerable flexibility which may be increased by making the base hollow, as at 42, thus permitting the pressure bar to be permanently attached to the base, and the base retained to the nut by flexing back the wings 36a until they pass through the opening of the nut.
- FIGURES 3-7 are otherwise numbered similarly to FIGURES l and 2 but with corresponding parts denoted by an added a.
- the U-bolt, pressure bar, and nut may be made of forged or cast bronze, or silicon bronze, or other hard metal which does not deform easily and which possesses a high tensile strength.
- the base is made of non-metallic material to reduce its weight and expense. If made of synthetics, plastics, or similar materials, it may also have the added advantages of being non-conductive, non-corrosive and non-magnetic.
- a U-bolt connector having a pressure bar, a nut, and a non-metallic retainer member movably coupling said pressure bar to said nut;
- said retainer member comprising a substantially U- shaped unitary body portion of resilient material including a pair of integral resilient legs extending therefrom;
- said pressure bar including a projecting portion having a discontinuitythereon for interlocking with said retainer member;
- said retainer member including a cavity in said resilient body portion having a discontinuity therein for receiving and interlocking with said projecting portion of said pressure bar; the said resilient legs of said retainer member each including a free end and an outwardly extending detentv shoulder proximate said free end for interlocking.
- ' comprise a transversely extending groove adapted to receive said tongue element and to resist separation there-' from in the direction in which pressure is transmitted by said pressure bar.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Description
Jan. 17, 1967 w, WHALEN 3,298,072
BOLTED CONNECTOR Original Filed Dec. 12. 1963 INVENTOR. B WILLIAM WHALEN zw/ /fl iz ATTORNEY United States Patent Office 3,298,072 BOLTED CONNECTOR William T. Whalen, Norwalk, Conn., assignor to Burndy Corporation, a corporation of New York Continuation of application Ser. No. 330,026, Dec. 12, 1963. This application June 10, 1965, Ser. No. 467,812 2 Claims. (Cl. 24-125) This is a continuation of application Serial No. 330,026, filed December 12, 1963, now abandoned. v
This invention relates generally to U-bolt connectors known also as split, slotted, or bifuncated bolts, and more particularly to a pressure bar used in such a device for compressing therein the conductors, wires, or other parts which are to be clamped together. In general, a nut is threaded to the outer surface of the legs of the bolt for urging the pressure bar against wires or parts positioned between the legs. The pressure bar is rotatably mounted to the nut, to permit the nut to rotate on the bolt while it linearly advances the pressure bar. This avoids rotary contact between the bar and the clamped parts. In most applications, the pressure bar is assembled to the nut by an extension of the bar which forms a nut retainer.
The bolt, nut and pressure bar are preferably made of high strength metal to withstand the forces developed in use. In an electrical connector, the higher the pressure applied, the better the electrical contact between the conductors being joined. That is, high pressure lowers the electrical resistance of the joint and results in higher electrical joint efficiency.
It is an object of the present invention to provide a combination of nut, pressure bar and retainer that is sufiiciently strong to withstand the required pressures, but which is lighter in weight than a conventional all-metal combination.
These and other objects and features of this invention will become more apparent by reference to the following description taken in conjunction with the accompanying drawings, in which:
FIGURE 1 is a partially sectioned side elevation view of a U-bolt connector provided with a novel pressure bar and nut retainer in accordance with this invention;
FIGURE 2 is a transverse sectional view of the same taken in the plane 2-2 of FIGURE 1;
FIGURES 3, 4 and 5 are side, end, and bottom views respectively of a modified form of pressure bar; FIG- URES 6 and 7 are side and end views of a modified form of retainer used to couple the modified pressure bar of FIGURE 3 to the nut.
Now, referring more in detail to the drawing, it may be seen that reference numeral 10 designates generally a U-bolt connector having a pair of parallel extending legs 12 and 14 which are threaded on their outer surfaces, as at 20, to receive a threaded nut 22. A pressure bar 24, disposed between legs 12 and 14 and beneath nut 22, is provided with extending wing portions 26 and 28 which engage and receive forces applied by nut 22. As the nut is axially advanced along the legs by screw thread rotation, the force of the advancement is transmitted through pressure bar 24 to parts such as wire conductors 16 and 18 disposed between legs 12 and 14 which are thus clamped between the bar and head portion of the U-bolt.
Instead of a unitary, all-metallic pressure bar having a portion adapted to be manually deformed or bolted to secure the nut thereto, I employ a pressure bar in combination with a light-weight non-metallic retaining base member 30 secured thereto.
The pressure bar and base are provided with tongue 32 and complementary groove 34, respectively (shown in FIGURE 2), which may be dimensioned for forcible engagement or otherwise secured in position to interlock the one to the other.
3,298,072 Patented Jan. 17, 1967 The base is provided with a pair of outwardly extending wings 36 which project through and beyond the nut 22, each of which includes a detent shoulder 38 spaced from the pressure bar 24 by a distance at least equal to or slightly greater than the axial length of the nut. Thus when the wings 36 of the base 30 are extended through the central opening of the nut 22, and the pressure bar 24 is positioned in the groove 34, the projections 38 are resiliently snapped into position on the upper surface 40 of the nut, to secure and make a unitary assembly of nut and pressure bar.
The length of the base 30 along the side, as shown in FIGURE 1, is less than the inner diameter of the nut opening, and the thickness is slightly less than the space between the bolt legs, to permit the nut to be rotated into position on the legs of the U-bolt, while the pressure bar is driven linearly towards the conductors. The nut however, directly compresses the pressure bar into clamping engagement with the conductors, so that no pressure is applied to the base. The base therefore can be made of low strength material such as any well known plastic.
In the modifications shown in FIGURES 3 to 7 the pressure bar 24a is provided with an integral rivet 32a where it may be upset in conventional rivet fashion to form a permanent attachment between bar and base. To assure proper alignment of the two during and after assembly, the bar may be provided with recesses 51 formed to engage mating ribs or projections 52 on the base.
If the retainer base 30a is made of highly resilient plastic, such as nylon, the wings 36a may be given considerable flexibility which may be increased by making the base hollow, as at 42, thus permitting the pressure bar to be permanently attached to the base, and the base retained to the nut by flexing back the wings 36a until they pass through the opening of the nut.
The base and bar of FIGURES 3-7 are otherwise numbered similarly to FIGURES l and 2 but with corresponding parts denoted by an added a.
The U-bolt, pressure bar, and nut may be made of forged or cast bronze, or silicon bronze, or other hard metal which does not deform easily and which possesses a high tensile strength.
The base is made of non-metallic material to reduce its weight and expense. If made of synthetics, plastics, or similar materials, it may also have the added advantages of being non-conductive, non-corrosive and non-magnetic.
The result is a light weight combination of nut and pressure bar that is more economical, easier to use and remove in the field, and permits greater interchangeability than previous types.
The invention has thus been described but it is desired to be understood that it is not confined to the particular forms or usages shown and described, the same being merely illustrative, and that the invention may be carried out in other ways without departing from the spirit of the invention; therefore, the right is broadly claimed to employ all equivalent instrumentalities coming within the scope of the appendent claims, and by means of which objects of this invention are attained and new results accomplished, as it is obvious that the particular embodiments herein shown and described are only some of the many that can be employed to obtain these objects and accomplish these results.
Iclaim:
1. A U-bolt connector having a pressure bar, a nut, and a non-metallic retainer member movably coupling said pressure bar to said nut;
said retainer member comprising a substantially U- shaped unitary body portion of resilient material including a pair of integral resilient legs extending therefrom;
said pressure bar including a projecting portion having a discontinuitythereon for interlocking with said retainer member; a
said retainer member including a cavity in said resilient body portion having a discontinuity therein for receiving and interlocking with said projecting portion of said pressure bar; the said resilient legs of said retainer member each including a free end and an outwardly extending detentv shoulder proximate said free end for interlocking.
' comprise a transversely extending groove adapted to receive said tongue element and to resist separation there-' from in the direction in which pressure is transmitted by said pressure bar.
References Cited by the Examiner UNITED STATES PATENTS 2,816,274 12/ 1957 Barlow. v
v FOREIGN PATENTS 1,106,787 12/1955 France. 1,142,941 9/1957 France.
BERNARD A. GELAK, Primary Examiner.
Claims (1)
1. A U-BOLT CONNECTOR HAVING A PRESSURE BAR, A NUT, AND A NON-METALLIC RETAINER MEMBER MOVABLY COUPLING SAID PRESSURE BAR TO SAID NUT; SAID RETAINER MEMBER COMPRISING A SUBSTANTIALLY USHAPED UNITARY BODY PORTION OF RESILIENT MATERIAL INCLUDING A PAIR OF INTEGRAL RESILIENT LEGS EXTENDING THEREFROM; SAID PRESSURE BAR INCLUDING A PROJECTING PORTION HAVING A DISCONTINUITY THEREON FOR INTERLOCKING WITH SAID RETAINER MEMBER; SAID RETAINER MEMBER INCLUDING A CAVITY IN SAID RESILIENT BODY PORTION HAVING A DISCONTINUITY THEREIN FOR RECEIVING AND INTERLOCKING WITH SAID PROJECTING PORTION OF SAID PRESSURE BAR; THE SAID RESILIENT LEGS OF SAID RETAINER MEMBER EACH INCLUDING A FREE END AND AN OUTWARDLY EXTENDING DETENT SHOULDER PROXIMATE SAID FREE END FOR INTERLOCKING WITH SAID NUT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US467812A US3298072A (en) | 1965-06-10 | 1965-06-10 | Bolted connector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US467812A US3298072A (en) | 1965-06-10 | 1965-06-10 | Bolted connector |
Publications (1)
Publication Number | Publication Date |
---|---|
US3298072A true US3298072A (en) | 1967-01-17 |
Family
ID=23857284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US467812A Expired - Lifetime US3298072A (en) | 1965-06-10 | 1965-06-10 | Bolted connector |
Country Status (1)
Country | Link |
---|---|
US (1) | US3298072A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5236377A (en) * | 1992-03-31 | 1993-08-17 | Amp Incorporated | Electrical wire connector |
US5358354A (en) * | 1992-03-25 | 1994-10-25 | Firma Carl Freudenberg | Resilient coupling |
US5450769A (en) * | 1993-11-30 | 1995-09-19 | Alps Electric (Usa) Inc. | Clock spring connector with reduced-noise operation |
US20050249571A1 (en) * | 2004-05-10 | 2005-11-10 | Thomas & Betts International, Inc. | Anti-vibration/rotation device for split bolts |
US20090016689A1 (en) * | 2005-09-05 | 2009-01-15 | Interconexion Electrica S.A E.S.P. | Bird flight diversion device and system for fixing same to overhead wires and cables |
US9287637B2 (en) | 2012-09-26 | 2016-03-15 | Hubbell Incorporated | Split bolt electrical connector assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1106787A (en) * | 1954-06-14 | 1955-12-22 | Electrical connector | |
FR1142941A (en) * | 1955-02-22 | 1957-09-24 | Connector fitted with a braking device preventing any untimely loosening | |
US2816274A (en) * | 1954-05-03 | 1957-12-10 | Scovill Manufacturing Co | Split-bolt type electrical connectors |
-
1965
- 1965-06-10 US US467812A patent/US3298072A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2816274A (en) * | 1954-05-03 | 1957-12-10 | Scovill Manufacturing Co | Split-bolt type electrical connectors |
FR1106787A (en) * | 1954-06-14 | 1955-12-22 | Electrical connector | |
FR1142941A (en) * | 1955-02-22 | 1957-09-24 | Connector fitted with a braking device preventing any untimely loosening |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5358354A (en) * | 1992-03-25 | 1994-10-25 | Firma Carl Freudenberg | Resilient coupling |
US5236377A (en) * | 1992-03-31 | 1993-08-17 | Amp Incorporated | Electrical wire connector |
US5450769A (en) * | 1993-11-30 | 1995-09-19 | Alps Electric (Usa) Inc. | Clock spring connector with reduced-noise operation |
US20050249571A1 (en) * | 2004-05-10 | 2005-11-10 | Thomas & Betts International, Inc. | Anti-vibration/rotation device for split bolts |
US7607878B2 (en) | 2004-05-10 | 2009-10-27 | Thomas & Betts International, Inc. | Anti-vibration/rotation device for split bolts |
US20090016689A1 (en) * | 2005-09-05 | 2009-01-15 | Interconexion Electrica S.A E.S.P. | Bird flight diversion device and system for fixing same to overhead wires and cables |
US7770533B2 (en) * | 2005-09-05 | 2010-08-10 | Interconexion Electricia S.A. | Bird flight diversion device and system for fixing same to overhead wires and cables |
US9287637B2 (en) | 2012-09-26 | 2016-03-15 | Hubbell Incorporated | Split bolt electrical connector assembly |
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