US3719403A - Crane boom having wear pads - Google Patents

Crane boom having wear pads Download PDF

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Publication number
US3719403A
US3719403A US00090320A US3719403DA US3719403A US 3719403 A US3719403 A US 3719403A US 00090320 A US00090320 A US 00090320A US 3719403D A US3719403D A US 3719403DA US 3719403 A US3719403 A US 3719403A
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US
United States
Prior art keywords
boom
boom section
wear
sections
wear pads
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
Application number
US00090320A
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English (en)
Inventor
Tien Sung Fu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kidde Inc
Original Assignee
Walter Kidde and Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Walter Kidde and Co Inc filed Critical Walter Kidde and Co Inc
Application granted granted Critical
Publication of US3719403A publication Critical patent/US3719403A/en
Assigned to KIDDE, INC., reassignment KIDDE, INC., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). FILED 4-16-80 DELAWARE Assignors: WALTER KIDDE & COMPANY, INC.
Assigned to KIDDE INDUSTRIES, INC. reassignment KIDDE INDUSTRIES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). MARCH 31, 1988 (DELAWARE) Assignors: BLOOM-1 INC.
Assigned to KIDDE INDUSTRIES, INC. reassignment KIDDE INDUSTRIES, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). APRIL 5, 1988 DELAWARE Assignors: HKID 45 INC.
Assigned to KIDDE, INC., A DE CORP. reassignment KIDDE, INC., A DE CORP. MERGER (SEE DOCUMENT FOR DETAILS). MEMORANDUM OF DISTRIBUTION IN LIQUIDATIOIN Assignors: HIMP-2 INC., A DE CORP. (CHANGED TO), KIDDE, INC., A DE CORP. (MERGED INTO)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/707—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic guiding devices for telescopic jibs

Definitions

  • Wear pads or bearings for telescoping crane booms consists of units on the rear and top and forward end and bottom of adjacent telescoping sections.
  • Each wear pad unit comprises plural wear pad or plate sections floatingly mounted on cushioning elements within a retainer. The strength or spring constant of the cushioning elements may vary within the units to meet conditions of varying stress.
  • the wear pad units are self-adjusting to accommodate inherent angularity between telescoping boom sections.
  • the wear pad units may consist of plural pad elements individually supported on cushioning elements whose spring constant or strength may be varied to meet particular conditions of loading or stress at that particular pad element.
  • the wear pad units are therefore self-adjusting and have the ability to maintain full face-to-face frictional contact with the boom section walls which they oppose during operation.
  • FIG. 1 is a diagrammatic representation in cross section of a crane boom equipped with wear pads in accordance with the prior art and illustrating on an exaggerated scale the canted condition of a pair of interfitting boom sections;
  • FIG. 2 is a longitudinal vertical section, partly in elevation, through a telescoping crane boom equipped with the wear pads of the invention
  • FIG. 3 is an enlarged vertical section taken on the staggered line 3-3 in FIG. 2;
  • FIG. 4 is a fragmentary horizontal section taken on line 4--4 ofFIG. 3;
  • FIG. 5 is a similar section taken on line 5-5 of FIG.
  • FIG. 6 is a view similar to FIG. 1 showing on an exaggerated scale the self-adjusting or self-seating ability of the wear pad elements;
  • FIG. 7 is a vertical sectional view similar, to FIG. 3
  • FIG. 8 is an enlarged fragmentary vertical section taken on line 8-8 of FIG. 7.
  • FIG. 1 wherein there is shown a fragmentary portion of a telescoping crane boom including a fly section 10 and one midsection 11, both being rectangular box members in cross section.
  • the boom in question may embody three, four or even five telescoping sections including a base section.
  • wear pads or plates 12 are conventionally secured to the rear end and upper side of each boom section which must telescope into a next outer most section, and in like manner similar wear pads 13 are conventionally secured at the forward end and lower side of each boom section which must receive telescopically therein a next innermost section.
  • the conventional prior art wear pads 12 and 13 are seated in some form of rigid retainer on the boom section carrying them and the wear pads constitute unitary relatively large area pads which do not have the ability to adjust or seat themselves automatically against the faces of the boom sections which they oppose. Consequently, when the adjacent boom sections become canted, particularly near the limit of their extension as shown exaggerated in FIG. 1, the corner regions only of the wear pads will frictionally engage the opposing surfaces of the boom sections and the wear pads, to a great extent, will lose their ability to distribute stresses over relatively wide surface areas. In the extreme, a line contact condition between the comers of the wear pads and the opposing walls of the boom sections will be approached with an undesirably high concentration of stresses on the top and bottom walls of adjacent boom sections producing bending and distortion thereof. As a result of this, it is customary to heavily reinforce the top and bottom boom section walls throughout their lengths by reinforcing plates 14.
  • each individual boom section is a rectangular box member fabricated from welded plate stock.
  • Each boom section includes top walls or webs l8, l8 and I8", bottom walls 19, 19' and 19" and vertical side walls 20, 20' and 20".
  • the side walls 20, 20 and 20" are spaced inwardly of the longitudinal edges of the top and bottom walls of the particular box-like boom sections to allow placement of the wear pads substantially directly above and below the vertical side walls 20, 20 and 20" so that the latter will function as columns under loading and the top and bottom walls of the boom sections will be substantially relieved of transverse bending stresses.
  • the improved wear pads of this invention may also be employed successfully with box-like boom sections constructed by other methods known in the art.
  • the improved wear pads comprise upper and lower pairs of assemblies 21 and lower pairs of assemblies 22 located respectively in laterally spaced relation on the rear and top of each boom section which must telescope into a next outermost section and on the front and bottom of each boom section which must receive telescopically a next innermost section.
  • the same comprises a plurality, such as three, individual relatively small wear pads or plates 23 having flat wear faces for direct frictional contact with the opposing top wall of the next outermost boom section 15 or 16 in FIG. 2.
  • the wear plates 23 of each unit are positioned in elongated rectangular retainer recesses 24 of reinforcing plates 25 which span the top walls of the boom sections carrying them transversely and are securely welded to such a top walls to locally reinforce the same as shown in the drawings.
  • Beneath each wear pad section 23 in each retainer recess 24 is a belleville spring 26 having its tapered end facing upwardly as best shown in FIG. 3. Belleville springs are suitable because they are essentially stiff small displacement springs and no large displacement is required in the present application.
  • the belleville springs simply serve to cushion the individual wear pads 23 and render the same selfadjusting or self-seating against the flat opposing wall of the next outermost boom section.
  • This feature allows the wear pads 23 to compensate automatically for canting of adjacent boom sections and this ability to adjust or compensate is shown graphically and on a somewhat exaggerated scale in FIG. 6.
  • FIG. 6 it can be observed that the upper wear, pads 23 are all totally contacting the top wall of the boom section 16 despite the canted relationship of the boom sections 16 and 17.
  • the high concentration of stresses discussed in connection with FIG. 1 is completely avoided and the wear on the pad elements 23 is drastically reduced.
  • the individual belleville springs 26 may be varied in strength or stiffness to counteract the stress or loading on a particular pad.
  • the rearmost wear pads 23 on the boom section 17 should have the strongest springs under them because the heaviest loading is at this location. In any case, however, all that is required is a spring force suflicient to assure proper load distribution over the entire flat face of the wear pad in question.
  • each pad element 23 is tloatingly supported on its own cushion or spring element and is essentially self-adjusting or selfseating.
  • each of these embodies the same plurality of rectangular wear pad sections 27 which may be identical to the elements 23.
  • Beneath each pad section 27 is a belleville spring 28 similar or identical to the springs 26 of the upper assemblies.
  • the pads 27 and springs 28 are located in retaining recesses 29 of bottom U-shaped reinforcing straps 30 whose opposite vertical side portions 31 are welded to the vertical walls of the particular boom section in question to reinforce this boom section locally.
  • the bottom wall of the particular boom section is also provided with openings 32 immediately above the recesses 29 to receive and retain the wear pads 27.
  • the wear pads 27 of the lower assemblies function in the same manner and possess the same advantages as described above for the upper assemblies 21.
  • FIGS. 7 and 8 of the drawings depict a modification of the invention wherein single elongated upper and lower wear pads 33 and 34 are employed in the assemblies in lieu of the plural smaller sectional wear pads of the previous embodiment.
  • Beneath each elongated wear pad 33 and 34 in the retainer cavity 35 or 36 is a single leaf spring 37 of sufficient strength to render the associated pad firmly seated against the opposing wall of the next adjacent boom section and essentially selfadjusting.
  • the single pads 33 and 34 float on the springs 37 and a complete surface contact between the wear faces of the pads and the opposing boom section walls is assured with a resulting load distribution over a considerable surface area, even when boom sections are canted as in FIGS. 1 and 6. All other parts and their functions are identical to corresponding parts in the previous embodiment and no further description of the structure in FIGS. 7 and 8 is deemed to be necessary for a proper understanding of the modification.
  • An extensible telescoping crane boom as set forth in claim 1 including plural separate closely spaced belleville springs in each of said retaining recesses arranged longitudinally of the exterior boom section, and said wear pads of the lower pair each comprising a corresponding number of separate load supporting wear pad sections resting on the respective belleville springs and each being substantially universally self-adjusting.
  • said upper wear pad assembly includes a heavy retainer plate connected to the top of the top web of the interior boom section and having retaining recessed therein located directly above said side webs of the interior boom section, upper belleville springs having a small vertical height resting in the bottoms of said recesses, the wear pads of the upper pair resting on top of said upper belleville springs and extending upwardly through and above the retaining recesses into engagement with the top web of the exterior boom section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
US00090320A 1970-11-17 1970-11-17 Crane boom having wear pads Expired - Lifetime US3719403A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9032070A 1970-11-17 1970-11-17

Publications (1)

Publication Number Publication Date
US3719403A true US3719403A (en) 1973-03-06

Family

ID=22222283

Family Applications (1)

Application Number Title Priority Date Filing Date
US00090320A Expired - Lifetime US3719403A (en) 1970-11-17 1970-11-17 Crane boom having wear pads

Country Status (12)

Country Link
US (1) US3719403A (enrdf_load_stackoverflow)
JP (1) JPS5520995B1 (enrdf_load_stackoverflow)
AU (1) AU468105B2 (enrdf_load_stackoverflow)
BE (1) BE771662A (enrdf_load_stackoverflow)
BR (1) BR7106178D0 (enrdf_load_stackoverflow)
CA (1) CA946790A (enrdf_load_stackoverflow)
DE (1) DE2149511C3 (enrdf_load_stackoverflow)
ES (1) ES393776A1 (enrdf_load_stackoverflow)
FR (1) FR2113835B1 (enrdf_load_stackoverflow)
GB (1) GB1361464A (enrdf_load_stackoverflow)
NL (1) NL167929C (enrdf_load_stackoverflow)
ZA (1) ZA714956B (enrdf_load_stackoverflow)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807108A (en) * 1972-09-18 1974-04-30 Harnischfeger Corp Structural design of boom section with inverted {37 a{38 {11 frame cross-section
US3837502A (en) * 1973-03-12 1974-09-24 Bucyrus Erie Co Light weight boom construction
US3866899A (en) * 1972-06-08 1975-02-18 Matburn Holdings Ltd Operation tables and chairs
US3944205A (en) * 1973-02-05 1976-03-16 American Hospital Supply Corporation Adjusting mechanism for stirrup extension bar for medical examination table
US3952466A (en) * 1974-08-08 1976-04-27 Walter Kidde & Company, Inc. Spring-loaded wear pads for crane booms
US4045923A (en) * 1976-05-06 1977-09-06 Walter Kidde & Company, Inc. Telescopic swingaway jib
US4112649A (en) * 1977-08-26 1978-09-12 Harnischfeger Corporation Boom section for telescopic crane boom
US4148531A (en) * 1977-08-15 1979-04-10 American Hoist & Derrick Company Self-aligning slide pads for telescopic boom
US4257201A (en) * 1979-04-19 1981-03-24 American Hoist & Derrick Company Self-centering telescoping beams
US4385704A (en) * 1980-08-14 1983-05-31 Kidde, Inc. Crane boom top plate lateral support
US4759452A (en) * 1987-02-20 1988-07-26 Faint Richard C Articulated load bearing wear pad assembly
US5199193A (en) * 1991-12-26 1993-04-06 International Remote Corporation Working machine
US5624047A (en) * 1995-04-24 1997-04-29 General Electric Company Telescoping mast with zero clearance for refueling machine
US5884791A (en) * 1996-06-18 1999-03-23 Kidde Industries, Inc. Telescopic jib for vehicular cranes
US5927857A (en) * 1995-10-10 1999-07-27 Black & Decker, Inc. Movable fence for a machine tool
JP3065296B2 (ja) 1997-09-18 2000-07-17 グローブ・ユー・エス・リミテッド・ライアビリティ・カンパニー 伸縮部品の摺動マウント組立体
US6695159B2 (en) * 2002-04-22 2004-02-24 Mi-Jack Products, Inc. Shock absorbing bumper for gantry cranes
US20050045575A1 (en) * 2003-09-01 2005-03-03 Eckhard Wimmer Crane
US6886200B2 (en) 2001-01-25 2005-05-03 Hill-Rom Services, Inc. Hydraulic actuator apparatus for a surgical table
US20080056875A1 (en) * 2006-09-06 2008-03-06 Jlg Industries, Inc. Extendible truss boom
EP2088113A3 (de) * 2008-02-08 2011-10-26 Hans-Hebetechnik+Metallbau-GmbH Kombinierte Hebeeinrichtung für Personen und Lasten
US20120085723A1 (en) * 2010-10-08 2012-04-12 Liebherr-Werk Ehingen Gmbh Boom element, telescopic boom and construction vehicle
US8678210B1 (en) * 2010-11-17 2014-03-25 Link-Belt Construction Equipment Co., L.P., Lllp Telescoping boom assembly with base section having primary shell and secondary formed shell
WO2012135002A3 (en) * 2011-03-30 2014-05-01 Genie Industries, Inc. Wearpad arrangement
US8827559B2 (en) * 2012-08-23 2014-09-09 The Heil Co. Telescopic arm for a refuse vehicle
US9950911B2 (en) 2013-05-31 2018-04-24 Cnh Industrial America Llc Adjustable wear pad assembly for a telescopic boom
US10112807B2 (en) 2014-09-26 2018-10-30 Putzmeister Engineering Gmbh Supporting leg and supporting construction for a working machine
US10144584B2 (en) 2013-10-01 2018-12-04 The Curotto-Can, Llc Intermediate container for a front loading refuse container
WO2020043566A1 (de) * 2018-08-27 2020-03-05 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Landwirtschaftliche maschine mit teleskoprahmen
US10759637B2 (en) 2015-07-30 2020-09-01 Manitowoc Crane Companies, Llc Segmented shape-compliant wear pad for telescoping boom assembly
US11111115B2 (en) 2017-03-02 2021-09-07 Maniitowoc Crane Companies, LLC Wear pad with insert for telescoping boom assembly
US11111957B1 (en) 2020-07-22 2021-09-07 Zoomlion Heavy Industry Na, Inc. Wear pad
US20220381647A1 (en) * 2021-05-27 2022-12-01 The Heil Co. Bearing pad monitoring systems and methods

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004695A (en) * 1975-04-16 1977-01-25 Fulton Industries, Inc. Channel and plate telescopic crane boom
GB1564509A (en) * 1976-01-29 1980-04-10 Coles Cranes Ltd Octagonal crane boom
US4394912A (en) * 1980-11-07 1983-07-26 Harnischfeger Corporation Mobile crane having telescoping outriggers and power operated screw means for same
FR2531691B1 (fr) * 1982-08-10 1986-03-28 Ppm Sa Fleche telescopique a dispositifs d'appui et/ou de guidage de ses troncons perfectionnes
DE3622305A1 (de) * 1986-07-03 1988-01-14 Jungheinrich Kg Hubgeruest fuer hubfahrzeuge
DE19755355C2 (de) * 1997-12-12 1999-12-23 Grove Us Llc Teleskopauslegerlagerung mit Prägungen
CN102152110B (zh) * 2011-01-31 2013-06-05 中联重科股份有限公司 吊臂组装系统及组装方法
DE102021106729A1 (de) * 2021-03-18 2022-09-22 Putzmeister Engineering Gmbh Stützkonstruktion

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US432372A (en) * 1890-07-15 Dwight c
US3168355A (en) * 1961-01-09 1965-02-02 La Vern E Rudolph Slide assembly for sliding doors
US3233376A (en) * 1962-04-17 1966-02-08 Prescon Corp Shear unit and shear connection between structures
US3243052A (en) * 1965-04-08 1966-03-29 Grove Mfg Co Telescopic crane boom with longitudinally extending cylinder connector
US3462023A (en) * 1967-07-12 1969-08-19 Grove Mfg Co Reinforcement member for telescoping boom assembly
US3620579A (en) * 1969-06-13 1971-11-16 American Hoist & Derrick Co Extensible boom assembly

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US432372A (en) * 1890-07-15 Dwight c
US3168355A (en) * 1961-01-09 1965-02-02 La Vern E Rudolph Slide assembly for sliding doors
US3233376A (en) * 1962-04-17 1966-02-08 Prescon Corp Shear unit and shear connection between structures
US3243052A (en) * 1965-04-08 1966-03-29 Grove Mfg Co Telescopic crane boom with longitudinally extending cylinder connector
US3462023A (en) * 1967-07-12 1969-08-19 Grove Mfg Co Reinforcement member for telescoping boom assembly
US3620579A (en) * 1969-06-13 1971-11-16 American Hoist & Derrick Co Extensible boom assembly

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866899A (en) * 1972-06-08 1975-02-18 Matburn Holdings Ltd Operation tables and chairs
US3807108A (en) * 1972-09-18 1974-04-30 Harnischfeger Corp Structural design of boom section with inverted {37 a{38 {11 frame cross-section
US3944205A (en) * 1973-02-05 1976-03-16 American Hospital Supply Corporation Adjusting mechanism for stirrup extension bar for medical examination table
US3837502A (en) * 1973-03-12 1974-09-24 Bucyrus Erie Co Light weight boom construction
US3952466A (en) * 1974-08-08 1976-04-27 Walter Kidde & Company, Inc. Spring-loaded wear pads for crane booms
US4045923A (en) * 1976-05-06 1977-09-06 Walter Kidde & Company, Inc. Telescopic swingaway jib
US4148531A (en) * 1977-08-15 1979-04-10 American Hoist & Derrick Company Self-aligning slide pads for telescopic boom
US4112649A (en) * 1977-08-26 1978-09-12 Harnischfeger Corporation Boom section for telescopic crane boom
US4257201A (en) * 1979-04-19 1981-03-24 American Hoist & Derrick Company Self-centering telescoping beams
US4385704A (en) * 1980-08-14 1983-05-31 Kidde, Inc. Crane boom top plate lateral support
US4759452A (en) * 1987-02-20 1988-07-26 Faint Richard C Articulated load bearing wear pad assembly
US5199193A (en) * 1991-12-26 1993-04-06 International Remote Corporation Working machine
US5624047A (en) * 1995-04-24 1997-04-29 General Electric Company Telescoping mast with zero clearance for refueling machine
US5927857A (en) * 1995-10-10 1999-07-27 Black & Decker, Inc. Movable fence for a machine tool
US6357328B1 (en) * 1995-10-10 2002-03-19 Black & Decker Inc. Movable fence for a machine tool
US5884791A (en) * 1996-06-18 1999-03-23 Kidde Industries, Inc. Telescopic jib for vehicular cranes
JP3065296B2 (ja) 1997-09-18 2000-07-17 グローブ・ユー・エス・リミテッド・ライアビリティ・カンパニー 伸縮部品の摺動マウント組立体
US6108985A (en) * 1997-09-18 2000-08-29 Grove, U.S.L.L.C. Slide mount for telescopic parts
US6886200B2 (en) 2001-01-25 2005-05-03 Hill-Rom Services, Inc. Hydraulic actuator apparatus for a surgical table
US6695159B2 (en) * 2002-04-22 2004-02-24 Mi-Jack Products, Inc. Shock absorbing bumper for gantry cranes
US7204379B2 (en) 2003-09-01 2007-04-17 Palfinger, Ag Crane
EP1515056A1 (de) * 2003-09-01 2005-03-16 Palfinger AG Gleitelement
US20050045575A1 (en) * 2003-09-01 2005-03-03 Eckhard Wimmer Crane
US20080056875A1 (en) * 2006-09-06 2008-03-06 Jlg Industries, Inc. Extendible truss boom
EP2088113A3 (de) * 2008-02-08 2011-10-26 Hans-Hebetechnik+Metallbau-GmbH Kombinierte Hebeeinrichtung für Personen und Lasten
US20120085723A1 (en) * 2010-10-08 2012-04-12 Liebherr-Werk Ehingen Gmbh Boom element, telescopic boom and construction vehicle
US8678210B1 (en) * 2010-11-17 2014-03-25 Link-Belt Construction Equipment Co., L.P., Lllp Telescoping boom assembly with base section having primary shell and secondary formed shell
WO2012135002A3 (en) * 2011-03-30 2014-05-01 Genie Industries, Inc. Wearpad arrangement
US8801354B2 (en) 2011-03-30 2014-08-12 Terex South Dakota, Inc. Wearpad arrangement
US8827559B2 (en) * 2012-08-23 2014-09-09 The Heil Co. Telescopic arm for a refuse vehicle
US9556898B2 (en) 2012-08-23 2017-01-31 The Heil Co. Telescopic arm for a refuse vehicle
US10865827B2 (en) 2012-08-23 2020-12-15 The Heil Co. Telescopic arm for a refuse vehicle
US11933352B2 (en) 2012-08-23 2024-03-19 The Heil Company Telescopic arm for a refuse vehicle
US11280368B2 (en) 2012-08-23 2022-03-22 The Heil Company Telescopic arm for a refuse vehicle
US10274006B2 (en) 2012-08-23 2019-04-30 The Heil Company Telescopic arm for a refuse vehicle
US9950911B2 (en) 2013-05-31 2018-04-24 Cnh Industrial America Llc Adjustable wear pad assembly for a telescopic boom
US10144584B2 (en) 2013-10-01 2018-12-04 The Curotto-Can, Llc Intermediate container for a front loading refuse container
US10112807B2 (en) 2014-09-26 2018-10-30 Putzmeister Engineering Gmbh Supporting leg and supporting construction for a working machine
US10759637B2 (en) 2015-07-30 2020-09-01 Manitowoc Crane Companies, Llc Segmented shape-compliant wear pad for telescoping boom assembly
US11111115B2 (en) 2017-03-02 2021-09-07 Maniitowoc Crane Companies, LLC Wear pad with insert for telescoping boom assembly
WO2020043566A1 (de) * 2018-08-27 2020-03-05 Amazonen-Werke H. Dreyer Gmbh & Co. Kg Landwirtschaftliche maschine mit teleskoprahmen
US11111957B1 (en) 2020-07-22 2021-09-07 Zoomlion Heavy Industry Na, Inc. Wear pad
US20220381647A1 (en) * 2021-05-27 2022-12-01 The Heil Co. Bearing pad monitoring systems and methods
US12078567B2 (en) * 2021-05-27 2024-09-03 The Heil Co. Bearing pad monitoring systems and methods

Also Published As

Publication number Publication date
DE2149511C3 (de) 1974-02-28
BE771662A (fr) 1971-12-31
NL167929C (nl) 1982-02-16
BR7106178D0 (pt) 1973-04-17
ES393776A1 (es) 1973-09-01
JPS5520995B1 (enrdf_load_stackoverflow) 1980-06-06
DE2149511B2 (de) 1973-07-26
CA946790A (en) 1974-05-07
AU468105B2 (en) 1976-01-08
FR2113835B1 (enrdf_load_stackoverflow) 1974-05-31
AU3163871A (en) 1973-02-01
NL167929B (nl) 1981-09-16
NL7111271A (enrdf_load_stackoverflow) 1972-05-19
DE2149511A1 (de) 1972-05-31
FR2113835A1 (enrdf_load_stackoverflow) 1972-06-30
ZA714956B (en) 1972-04-26
GB1361464A (en) 1974-07-24

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AS Assignment

Owner name: KIDDE, INC.,

Free format text: CHANGE OF NAME;ASSIGNOR:WALTER KIDDE & COMPANY, INC.;REEL/FRAME:005018/0200

Effective date: 19881109

AS Assignment

Owner name: KIDDE INDUSTRIES, INC.

Free format text: CHANGE OF NAME;ASSIGNOR:HKID 45 INC.;REEL/FRAME:005208/0907

Effective date: 19880405

Owner name: KIDDE INDUSTRIES, INC.

Free format text: CHANGE OF NAME;ASSIGNOR:BLOOM-1 INC.;REEL/FRAME:005208/0846

Effective date: 19881107

Owner name: KIDDE, INC., A DE CORP.

Free format text: MERGER;ASSIGNORS:KIDDE, INC., A DE CORP. (MERGED INTO);HIMP-2 INC., A DE CORP. (CHANGED TO);REEL/FRAME:005208/0890;SIGNING DATES FROM 19880402 TO 19890821