US3846030A - Post - Google Patents

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US3846030A
US3846030A US00279296A US27929672A US3846030A US 3846030 A US3846030 A US 3846030A US 00279296 A US00279296 A US 00279296A US 27929672 A US27929672 A US 27929672A US 3846030 A US3846030 A US 3846030A
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United States
Prior art keywords
post
clamp
sections
clamp members
members
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Expired - Lifetime
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US00279296A
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H Katt
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Individual
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/04Clamping or clipping connections
    • F16B7/0406Clamping or clipping connections for rods or tubes being coaxial
    • F16B7/0426Clamping or clipping connections for rods or tubes being coaxial for rods or for tubes without using the innerside thereof
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/631Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
    • E01F9/635Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact by shearing or tearing, e.g. having weakened zones
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/63Frangible connections
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/57Distinct end coupler
    • Y10T403/5761Interrupted periphery, e.g., split or segmental, etc.
    • Y10T403/5766Axially divided segments
    • Y10T403/5781Bolted

Definitions

  • the standard highway sign post is made in two lengths, the upper length constituting the above ground part and the lower length constituting the base part which is anchored in the ground, and a coupling is employed which envelopes and is clamped to the adjacent aligned ends of the two parts, with a weakened area generally of reduced thickness at the parting line between the two lengths of post to provide fora predetermined breaking of the coupling without undue damageto either length of post in the event the upper part of the post is hitand displaced by a vehicle.
  • the coupling is made up of a two piece clamp which is assembled on oppositesides of the post to bridge the gap at the parting line between the two lengths, and
  • FIG. 1 is a front elevation of a post with the ground sectioned showing installation
  • FIG. 2 is an enlarged perspective view showing a cou- I pling for'adjacent parts of a tubular post and with parts sectioned to show detail;
  • FIG. 3 is an exploded view showing the parts of the coupling of FIG. 2 ready for assembly;
  • FIG. 4 is a side elevation of the coupling and adjacent post sections showing the manner in which the coupling breaks upon impact
  • FIG. 5 is a view similar to FIG. 2 showing a coupling adapted to protect a wood post, with parts broken away and sectioned.
  • the post is made up of two aligned pipe sections 1 and 3, and the clamp 5 comprises two complementary U-shaped clamp members 7 and 8 adapted to envelop the adjacent ends of post parts 1 and 3 when assembled thereon.
  • Clamp members 7 and 8 have lateral flanges 9 extending from their vertical edges and which are secured togetherby suitable bolts 10 as shown.
  • the post is made up of two aligned wood 4 X4 inch sections I1 and 12, and the two complemental channel clamp members 13 and 14 are adapted to embrace the adjacent ends of the sections.
  • Members 13 and 14 have lateral flanges 15 extending'along their vertical edges to be secured together by bolts 16.
  • Each of the clamp members 7, 8, l3 and 14 is provided with a weakened zone 17, preferably of reduced thickness transversely thereof in the general plane of the parting line 18 between the abutting ends of the corresponding post sections.
  • the reduced thickness is provided by the shallow groove 6, shown on the outside of the clamp members, but which may be provided on the inside instead.
  • a shallow rib 19 is provided on the inside surface of each clamp member just above and below the weakened zone 17.
  • the ribs 19 serve as abutments for the ends of the post sectionsto effectively locate the sections.
  • FIG. 4 The functioning of the post is illustrated in FIG. 4 wherein the impact indicated by the arrow tilts the upper section of the post forward and effects breakage of the coupling members at the zone 17, without dam age to either post section.
  • the upper post section can thereafter be reassembled upon the base section with a new coupling or clamp 5.
  • the strength of the coupling parts and particularly of the weakened zone 17 must be determined with the desired results in mind, taking into account the strength of the post sections and their resistance against bending. For instance, the zone 17 should break before either post section permanently distorts or bends under a given impact. Impacts which are insufficient to break the coupling will then also be insufficient to distort or bend the post sections.
  • a post for highway signs and the like comprising two aligned post sections, one adapted to extend downwardly into the ground and the other adapted to extend upwardly to support a sign or other object, a two piece clamp of complementary flanged U-shaped members bridging the parting line between the two post sections and enveloping the adjacent ends of the sections to secure the same together with said clamp constituting the sole support for said upper post section upon said lower post section, and bolts extending through the flanges to secure the clamp members together and upon the post ternally of at least one of the clamp members above and below said weakened portion of the clamp members serving to space the ends of said post sections and to center the same with respect to said weakend clamp event of a severe impact upon the upper post, and 5 portion.
  • spaced shoulder means integral with and projecting in-

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

A highway sign post is anchored or coupled to a corresponding base by a tubular clamp secured to both the post and base and which has a groove therein extending peripherally of the coupling in the region of the parting line between the post and base.

Description

POST
BACKGROUND OF THE INVENTION Various complicated and costly frangible base mountings have been proposed heretofore but have generally not been acceptable to highway authorities due to their cost.
SUMMARY OF THE INVENTION According to the present invention the standard highway sign post is made in two lengths, the upper length constituting the above ground part and the lower length constituting the base part which is anchored in the ground, and a coupling is employed which envelopes and is clamped to the adjacent aligned ends of the two parts, with a weakened area generally of reduced thickness at the parting line between the two lengths of post to provide fora predetermined breaking of the coupling without undue damageto either length of post in the event the upper part of the post is hitand displaced by a vehicle.
The coupling is made up of a two piece clamp which is assembled on oppositesides of the post to bridge the gap at the parting line between the two lengths, and
which is preferably bolted by a bolt passing through lateral adjacent flanges of the clamp members.
BRIEF DESCRIPTION OF THE DRAWING The best mode presently contemplated for carrying out the invention is illustrated in the accompanying drawings in which:
FIG. 1 is a front elevation of a post with the ground sectioned showing installation;
FIG. 2 is an enlarged perspective view showing a cou- I pling for'adjacent parts of a tubular post and with parts sectioned to show detail;
FIG. 3 is an exploded view showing the parts of the coupling of FIG. 2 ready for assembly;
FIG. 4 is a side elevation of the coupling and adjacent post sections showing the manner in which the coupling breaks upon impact; and
FIG. 5 is a view similar to FIG. 2 showing a coupling adapted to protect a wood post, with parts broken away and sectioned.
DESCRIPTION OF THE PREFERRED EMBODIMENTS tween the post parts, whereby this region of the clamp is weakened for preferential breakage in the event of an impact upon the upper post part 1.
As shown in FIGS. 1 to 4 the post is made up of two aligned pipe sections 1 and 3, and the clamp 5 comprises two complementary U-shaped clamp members 7 and 8 adapted to envelop the adjacent ends of post parts 1 and 3 when assembled thereon.
Clamp members 7 and 8 have lateral flanges 9 extending from their vertical edges and which are secured togetherby suitable bolts 10 as shown.
In the embodiment of FIG. 5, the post is made up of two aligned wood 4 X4 inch sections I1 and 12, and the two complemental channel clamp members 13 and 14 are adapted to embrace the adjacent ends of the sections. Members 13 and 14 have lateral flanges 15 extending'along their vertical edges to be secured together by bolts 16.
Each of the clamp members 7, 8, l3 and 14 is provided with a weakened zone 17, preferably of reduced thickness transversely thereof in the general plane of the parting line 18 between the abutting ends of the corresponding post sections.
The reduced thickness is provided by the shallow groove 6, shown on the outside of the clamp members, but which may be provided on the inside instead.
A shallow rib 19 is provided on the inside surface of each clamp member just above and below the weakened zone 17.
When the clamp coupling is assembled upon the post sections 1 and 3, or 11 and 12, as the case may be, the ribs 19 serve as abutments for the ends of the post sectionsto effectively locate the sections.
The functioning of the post is illustrated in FIG. 4 wherein the impact indicated by the arrow tilts the upper section of the post forward and effects breakage of the coupling members at the zone 17, without dam age to either post section.
The upper post section can thereafter be reassembled upon the base section with a new coupling or clamp 5.
It will be understood that the strength of the coupling parts and particularly of the weakened zone 17 must be determined with the desired results in mind, taking into account the strength of the post sections and their resistance against bending. For instance, the zone 17 should break before either post section permanently distorts or bends under a given impact. Impacts which are insufficient to break the coupling will then also be insufficient to distort or bend the post sections.
Various modes of carrying out the invention are contemplated as being within the scope of the following claims particularly pointing out and distinctly claiming the subject matter which is regarded as the invention.
I claim:
l. A post for highway signs and the like comprising two aligned post sections, one adapted to extend downwardly into the ground and the other adapted to extend upwardly to support a sign or other object, a two piece clamp of complementary flanged U-shaped members bridging the parting line between the two post sections and enveloping the adjacent ends of the sections to secure the same together with said clamp constituting the sole support for said upper post section upon said lower post section, and bolts extending through the flanges to secure the clamp members together and upon the post ternally of at least one of the clamp members above and below said weakened portion of the clamp members serving to space the ends of said post sections and to center the same with respect to said weakend clamp event of a severe impact upon the upper post, and 5 portion.
spaced shoulder means integral with and projecting in-

Claims (1)

1. A post for highway signs and the like comprising two aligned post sections, one adapted to extend downwardly into the ground and the other adapted to extend upwardly to support a sign or other object, a two piece clamp of complementary flanged U-shaped members bridging the parting line between the two post sections and enveloping the adjacent ends of the sections to secure the same together with said clamp constituting the sole support for said upper post section upon said lower post section, and bolts extending through the flanges to secure the clamp members together and upon the post sections, characterized by a portion of reduced cross-sections on each clamp member in the general plane of the parting line between the post sections to provide a preferential breakage of the clamp members in the event of a severe impact upon the upper post, and spaced shoulder means integral with and projecting internally of at least one of the clamp members above and below said weakened portion of the clamp members serving to space the ends of said post sections and to center the same with respect to said weakend clamp portion.
US00279296A 1972-08-10 1972-08-10 Post Expired - Lifetime US3846030A (en)

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Cited By (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912404A (en) * 1975-01-02 1975-10-14 Herbert L Katt Highway post construction
US4019632A (en) * 1976-05-11 1977-04-26 The Wright Tool & Forge Co. Tool handle display and hanger device
US4071970A (en) * 1976-04-27 1978-02-07 Transpo-Safety, Inc. Hinge plate for roadside post safety breakaway system for sign panels and the like
US4081177A (en) * 1977-03-10 1978-03-28 The United States Of America As Represented By The Secretary Of The Air Force Break-away outrigger
US4129206A (en) * 1976-05-24 1978-12-12 Coors Container Company Container rotating means in apparatus for curing inks and decorative coatings
EP0005065A2 (en) * 1978-04-21 1979-10-31 Douglas Blanchard Chisholm Yieldable upright assembly
US4212094A (en) * 1978-10-05 1980-07-15 Flexible Steel Lacing Company Belt fasteners
US4365906A (en) * 1981-03-02 1982-12-28 King Kenneth L Rigging terminal assembly
US4411547A (en) * 1980-07-18 1983-10-25 Johnson Alfred E Braced structural member
US4490062A (en) * 1978-04-21 1984-12-25 Chisholm Douglas B Couplings for sign posts and the like
US4542943A (en) * 1982-04-08 1985-09-24 Kennametal Inc. Earthworking tool for protecting from abnormally high cutting loads
US4638608A (en) * 1985-10-07 1987-01-27 Precisionform, Inc. Breakaway standard support assembly
US4793820A (en) * 1987-12-21 1988-12-27 Whirlpool Corporation Electrical wiring harness termination system
GB2207480A (en) * 1987-07-27 1989-02-01 Kwikform Ltd Gkn Beam scaffold structure
US4815896A (en) * 1986-09-22 1989-03-28 Fox Nelson C Deep sea shark cable protectors
US4846745A (en) * 1988-01-20 1989-07-11 Lobe Henry J Sailboard fin retaining member
US4964826A (en) * 1988-01-20 1990-10-23 Lobe Henry J Sailboard fin retaining member
FR2660803A1 (en) * 1990-04-06 1991-10-11 Thomson Csf Connecting device and part for UHF waveguides
US5125194A (en) * 1991-05-08 1992-06-30 Marion Steel Company Safety sign post with breakaway connection
US5133681A (en) * 1991-05-10 1992-07-28 Lobe Henry J Frangible sailboard fin retaining member
US5211685A (en) * 1992-03-16 1993-05-18 Garcia Robert S Fire hydrant base enclosure
US5259843A (en) * 1991-11-14 1993-11-09 Kawasumi Laboratories Inc. Medical connector for attaching to liquid introducing tube
US6042292A (en) * 1994-12-09 2000-03-28 Belanger, Inc. Pre-engineered failure link for brush shaft
US6113055A (en) * 1995-09-25 2000-09-05 Salman; Mark T. Sign post coupler
WO2000077441A1 (en) * 1999-06-15 2000-12-21 Barnes Theodore D Breakaway sign post
US6398192B1 (en) 1999-01-06 2002-06-04 Trn Business Trust Breakaway support post for highway guardrail end treatments
US6457895B1 (en) 2000-07-05 2002-10-01 Mark T. Salman Flush mount breakaway post coupler
US6488268B1 (en) * 1997-05-09 2002-12-03 Trn Business Trust Breakaway support post for highway guardrail end treatments
US20020193171A1 (en) * 2001-06-15 2002-12-19 Del Principe Robert J. Disposable novelty sports equipment
US6715735B2 (en) 2000-08-31 2004-04-06 The Texas A&M University System Head assembly for guardrail extruder terminal
US6783116B2 (en) 1999-01-06 2004-08-31 Trn Business Trust Guardrail end terminal assembly having at least one angle strut
US6902150B2 (en) 2001-11-30 2005-06-07 The Texas A&M University System Steel yielding guardrail support post
US6948703B2 (en) 2002-01-30 2005-09-27 The Texas A&M University System Locking hook bolt and method for using same
US20060027797A1 (en) * 2004-08-07 2006-02-09 Safety By Design Energy absorbing post for roadside safety devices
US20060107572A1 (en) * 2004-11-24 2006-05-25 Barnes Theodore D Breakaway sign post with magnetically coupled sections
US20070196164A1 (en) * 2006-02-23 2007-08-23 Clifford Dent Support post assembly with hinge plate and mounting bracket assembly
US7513538B1 (en) * 2006-08-28 2009-04-07 Gee Anthony F Device for connecting two metal pipes
US7556242B2 (en) 2002-01-30 2009-07-07 The Texas A&M University Systems Cable guardrail release system
US20090206596A1 (en) * 2006-08-01 2009-08-20 Andreas Wildermuth Sealing arrangement for a coupling for refrigerant lines
US20110027007A1 (en) * 2007-12-03 2011-02-03 David Tunno Retrofittable cable mechanical fuse
ES2396900A1 (en) * 2011-02-15 2013-03-01 Ecotécnica Integral S.L. Passive security device in road equipment support structures. (Machine-translation by Google Translate, not legally binding)
US8517349B1 (en) 2000-10-05 2013-08-27 The Texas A&M University System Guardrail terminals
US20140062648A1 (en) * 2012-08-30 2014-03-06 Patrick McManus Member-to-Member Fuse Connection
US8800239B2 (en) * 2010-04-19 2014-08-12 Weihong Yang Bolted steel connections with 3-D jacket plates and tension rods
US20150013267A1 (en) * 2013-07-09 2015-01-15 Jeffrey Huncovsky Systems and Methods for Repairing Utility Poles
US20150218840A1 (en) * 2012-07-25 2015-08-06 Thyssenkrupp Steel Europe Ag Modular tower for a wind power plant
US9376797B2 (en) 2010-04-19 2016-06-28 Weihong Yang Bolted steel connections with 3-D jacket plates and tension rods
US20160252197A1 (en) * 2015-02-26 2016-09-01 Steven A. Roth Frangible hanger assembly and method
US10443240B2 (en) 2017-10-02 2019-10-15 Jack Walters & Son, Corp. Reinforced composite column

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US157427A (en) * 1874-12-01 Improvement in shaft-couplings
US907539A (en) * 1908-01-17 1908-12-22 Millward T Thomas Shaft-clamp.
US907523A (en) * 1908-07-28 1908-12-22 William Allan Perry Shaft-coupling.
US2249848A (en) * 1939-06-22 1941-07-22 Denis F O'brien Frangible hydrant
US3349531A (en) * 1964-07-16 1967-10-31 George H Watson Frangible connector assembly for stanchions, poles and standards
US3355998A (en) * 1964-07-24 1967-12-05 Allen V Roemisch Highway marker device
US3439947A (en) * 1967-02-10 1969-04-22 Mueller Co Fire hydrant stem coupling
US3586019A (en) * 1968-12-18 1971-06-22 Waterous Co Fire hydrant

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US157427A (en) * 1874-12-01 Improvement in shaft-couplings
US907539A (en) * 1908-01-17 1908-12-22 Millward T Thomas Shaft-clamp.
US907523A (en) * 1908-07-28 1908-12-22 William Allan Perry Shaft-coupling.
US2249848A (en) * 1939-06-22 1941-07-22 Denis F O'brien Frangible hydrant
US3349531A (en) * 1964-07-16 1967-10-31 George H Watson Frangible connector assembly for stanchions, poles and standards
US3355998A (en) * 1964-07-24 1967-12-05 Allen V Roemisch Highway marker device
US3439947A (en) * 1967-02-10 1969-04-22 Mueller Co Fire hydrant stem coupling
US3586019A (en) * 1968-12-18 1971-06-22 Waterous Co Fire hydrant

Cited By (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912404A (en) * 1975-01-02 1975-10-14 Herbert L Katt Highway post construction
US4071970A (en) * 1976-04-27 1978-02-07 Transpo-Safety, Inc. Hinge plate for roadside post safety breakaway system for sign panels and the like
US4019632A (en) * 1976-05-11 1977-04-26 The Wright Tool & Forge Co. Tool handle display and hanger device
US4129206A (en) * 1976-05-24 1978-12-12 Coors Container Company Container rotating means in apparatus for curing inks and decorative coatings
US4081177A (en) * 1977-03-10 1978-03-28 The United States Of America As Represented By The Secretary Of The Air Force Break-away outrigger
US4236843A (en) * 1978-04-21 1980-12-02 Chisholm Douglas B Sign post couplings
EP0005065A3 (en) * 1978-04-21 1979-11-14 Douglas Blanchard Chisholm Sign post couplings
EP0005065A2 (en) * 1978-04-21 1979-10-31 Douglas Blanchard Chisholm Yieldable upright assembly
US4490062A (en) * 1978-04-21 1984-12-25 Chisholm Douglas B Couplings for sign posts and the like
US4212094A (en) * 1978-10-05 1980-07-15 Flexible Steel Lacing Company Belt fasteners
US4411547A (en) * 1980-07-18 1983-10-25 Johnson Alfred E Braced structural member
US4365906A (en) * 1981-03-02 1982-12-28 King Kenneth L Rigging terminal assembly
US4542943A (en) * 1982-04-08 1985-09-24 Kennametal Inc. Earthworking tool for protecting from abnormally high cutting loads
US4638608A (en) * 1985-10-07 1987-01-27 Precisionform, Inc. Breakaway standard support assembly
US4815896A (en) * 1986-09-22 1989-03-28 Fox Nelson C Deep sea shark cable protectors
GB2207480A (en) * 1987-07-27 1989-02-01 Kwikform Ltd Gkn Beam scaffold structure
US4793820A (en) * 1987-12-21 1988-12-27 Whirlpool Corporation Electrical wiring harness termination system
WO1989006562A1 (en) * 1988-01-20 1989-07-27 Henry John Lobe Sailboard fin retaining member
US4846745A (en) * 1988-01-20 1989-07-11 Lobe Henry J Sailboard fin retaining member
US4964826A (en) * 1988-01-20 1990-10-23 Lobe Henry J Sailboard fin retaining member
FR2660803A1 (en) * 1990-04-06 1991-10-11 Thomson Csf Connecting device and part for UHF waveguides
US5125194A (en) * 1991-05-08 1992-06-30 Marion Steel Company Safety sign post with breakaway connection
US5133681A (en) * 1991-05-10 1992-07-28 Lobe Henry J Frangible sailboard fin retaining member
US5259843A (en) * 1991-11-14 1993-11-09 Kawasumi Laboratories Inc. Medical connector for attaching to liquid introducing tube
US5211685A (en) * 1992-03-16 1993-05-18 Garcia Robert S Fire hydrant base enclosure
US6042292A (en) * 1994-12-09 2000-03-28 Belanger, Inc. Pre-engineered failure link for brush shaft
US6113055A (en) * 1995-09-25 2000-09-05 Salman; Mark T. Sign post coupler
US8038126B1 (en) 1997-05-09 2011-10-18 Trinity Industries, Inc. Breakaway support post for highway guardrail end treatments
US6488268B1 (en) * 1997-05-09 2002-12-03 Trn Business Trust Breakaway support post for highway guardrail end treatments
US6886813B2 (en) 1997-05-09 2005-05-03 Exodyne Technologies, Inc. Breakaway support post for highway guardrail end treatments
US6793204B2 (en) 1997-05-09 2004-09-21 Trn Business Trust Breakaway support post for highway guardrail end treatments
US6398192B1 (en) 1999-01-06 2002-06-04 Trn Business Trust Breakaway support post for highway guardrail end treatments
US6619630B2 (en) 1999-01-06 2003-09-16 Trn Business Trust Breakaway support post for highway guardrail end treatments
US6783116B2 (en) 1999-01-06 2004-08-31 Trn Business Trust Guardrail end terminal assembly having at least one angle strut
US6264162B1 (en) * 1999-06-15 2001-07-24 Theodore D. Barnes Breakaway sign post
US6390436B2 (en) * 1999-06-15 2002-05-21 Theodore D. Barnes Breakaway sign post
WO2000077441A1 (en) * 1999-06-15 2000-12-21 Barnes Theodore D Breakaway sign post
US6457895B1 (en) 2000-07-05 2002-10-01 Mark T. Salman Flush mount breakaway post coupler
US6715735B2 (en) 2000-08-31 2004-04-06 The Texas A&M University System Head assembly for guardrail extruder terminal
US8517349B1 (en) 2000-10-05 2013-08-27 The Texas A&M University System Guardrail terminals
US6935964B2 (en) * 2001-06-15 2005-08-30 Robert J Del Principe Disposable novelty sports equipment
US20020193171A1 (en) * 2001-06-15 2002-12-19 Del Principe Robert J. Disposable novelty sports equipment
US6902150B2 (en) 2001-11-30 2005-06-07 The Texas A&M University System Steel yielding guardrail support post
US7556242B2 (en) 2002-01-30 2009-07-07 The Texas A&M University Systems Cable guardrail release system
US6948703B2 (en) 2002-01-30 2005-09-27 The Texas A&M University System Locking hook bolt and method for using same
US20060027797A1 (en) * 2004-08-07 2006-02-09 Safety By Design Energy absorbing post for roadside safety devices
US20060107572A1 (en) * 2004-11-24 2006-05-25 Barnes Theodore D Breakaway sign post with magnetically coupled sections
US7051466B1 (en) 2004-11-24 2006-05-30 Barnes Theodore D Breakaway sign post with magnetically coupled sections
WO2007100704A2 (en) * 2006-02-23 2007-09-07 Clifford Dent Support post assembly with hinge plate and mounting bracket assembly
US7748681B2 (en) * 2006-02-23 2010-07-06 Clifford Dent Support post assembly with hinge plate and mounting bracket assembly
WO2007100704A3 (en) * 2006-02-23 2008-11-06 Clifford Dent Support post assembly with hinge plate and mounting bracket assembly
US20070196164A1 (en) * 2006-02-23 2007-08-23 Clifford Dent Support post assembly with hinge plate and mounting bracket assembly
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