US3741509A - Tripod type jack assembly - Google Patents

Tripod type jack assembly Download PDF

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US3741509A
US3741509A US00151812A US3741509DA US3741509A US 3741509 A US3741509 A US 3741509A US 00151812 A US00151812 A US 00151812A US 3741509D A US3741509D A US 3741509DA US 3741509 A US3741509 A US 3741509A
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legs
spider
collar
relation
notches
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US00151812A
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L Kelley
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    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/28—Undercarriages for supports with one single telescoping pillar
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043—Allowing translations
    • F16M11/046—Allowing translations adapted to upward-downward translation movement
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/16—Details concerning attachment of head-supporting legs, with or without actuation of locking members thereof
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/242—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by spreading of the legs
    • F16M11/245—Members limiting spreading of legs, e.g. "umbrella legs"
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/025—Locking means for translational movement
    • F16M2200/027—Locking means for translational movement by friction

Definitions

  • the invention relates to pipe jacks or support devices and more particularly to a tripod type jack assemblies including camming means functioning to retain the legs thereof in their folded position, adjacent the body portion thereof, rendering the jack easier to transport and store.
  • Another object is to provide a tripod type jack assembly with foldable legs in which one may be used in carrying it from one location to another.
  • Another object is to provide a tripod'type pipe jack assembly constructed sufficiently rigid to withstand any weight it is expected to support.
  • FIG. 1 is a perspective view showing a tripod pipe jack assembly of the type disclosed herein.
  • FIG. 2 is an exploded view in perspective of the tripod type jack assembly disclosed herein.
  • FIG. 3 is a side elevational view showing the jack assembly of FIG. 1 in its folded position.
  • FIG. 4 is an enlarged perspective view of the collar or camming means of the jack assembly of FIGS. 1 and 2.
  • FIGS. 1 and 2 the subject pipe jack llis shown in FIGS. 1 and 2.
  • the jack is caused to assume a folded'position, as shown in FIG. 3, this position to be described as the disclosure progresses.
  • Principal components of the jack assembly 11 include body and elevating portions l2.and 14, spider-like member 16- and collar 17, and leg member 18,
  • the body portion 12 constitutes a length of hollow tubing 22 of cylindrical configuration on which thespider member 16 is received and has a sliding fit on the member 12.
  • the member 16 is secured in a plurality of positions on the tube 12 by means of a set screw 20 as shown in FIGS. 1 and 2.
  • Equally spaced around the mmeber 16 are leg holding members to which the legs 18, 19 and 21 are attached substantially as shown in FIG. 1.
  • the upper wall of the member 16 has three rectnagular notches 23 provided therein. The notches 23 provide a firm footing for the upper end of the legs 18, 19 and 21 on the tube 22.
  • the upper ends of the legs 18, 19 and 21 carry seating members 24 which are contoured to the shape of the member 12 and, therefore, provide a firm footing on the tube 22.
  • the side edges of the notches 23 also provide support and alignment for the legs 18, 19 and 21 at such time as the legs are in their extended position as the members 24 are received and bottomed in the notches 23 at this time as will be apparent from FIG. 2.
  • the elevating portion 14 of the jack 11 also constitutes a length of pipe or tubing 26 the outside diameter of which allows it to be telescopically received in the tube 22 and provides a sliding fit therein.
  • the tube 26 carries a threaded cross member 27 at its upper end.
  • the threaded rod 28 is received in the threaded portion of the elevating member 14 providing means for elevating or depressing the pipe 29 which lies in a pipecarrying angle 31 fixed to the top of rod 28.
  • a pair of rollers 30 is mounted in the angle 31 by axle pins 32 and provides means for carrying the pipe assembly 29.
  • the collar member 17 includes three notches 33 of rectangular configuration formed therein substantially as shown in FIG. 4.
  • the notches 33 span the gusset plates 34 at the upper end of the legs l8, l9 and 21, when the latter are in their extended positions.
  • the inside diameter of the collar 17 is such that it is received in surrounding and rotating relation around the notched portions of the spider-like member 16 as best seen in FIGS. 1 and 3.
  • the collar 17 serves two purposes; first, it functions to hold the legs in their folded position as best seen in FIG. 3 and second, it functions to stabilize and hold the legs 18, 19 and 21 firmly in their open position as best seen in FIG. 1.
  • a tripod type pipe jack assembly which is rigid and firm in its extended position including camming means enabling the jack to be transported and stored while requiring a minimum of space. It will also be apparent that the jack 11 may be picked up by one leg and hand carried from one location to another when in its folded position, the camming means 36 making this feature possible. It will also be apparent that the jack 11 is of sufficiently strong and rigid construction enabling it to withstand any load required.
  • a tripod type jack adapted to elevate or depress a pipe assembly thereon, the combination comprising:
  • a lower body member and an upper elevating member constituting hollow cylindrical members having a telescoping relation with respect to each other adapted to support a pipe assebly thereon;
  • leg members pivotally attached to said spider-like member by gusset plates equally spaced around the periphery of said spider-like member, said legs being movable between extended and folded positions and functioning to maintain the jack in upright attitude at such time as they are in their extended position;
  • said gusset plates having a camming groove provided therein;
  • camming means comprising a hollow cylindrical collar having a surrounding and sliding relation on said body member, said collar having three equally 5 spaced camming surfaces extending normal to the axis of said collar and positioned to be received in said camming grooves when said legs are in their folded position, thereby forcing and maintaining said legs in their folded position in side-by-side relation with respect to said body member.
  • the upper ends of said leg members having rectangular members on the ends thereof adapted to be received in said notches occupying the entire space provided by said notches;
  • said elevating member including a rod portion and a lower supporting tube portion;
  • said tube portion including a threaded cross memher at the top thereof;

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

A tripod type pipe jack assembly or support device including camming means functioning - when activated - to maintain the legs in their folded side-by-side relation with the body of the jack thereby rendering the assembly easier to transport and store.

Description

United States Patent 1191 3,741,50 Kelly June 26, 1973 [54] TRIPOD TYPE JACK ASSEMBLY 2,532,168 11/1950 Jakoubek 248/354 S 2,587,511 2/1952 Nerman 248/168 [76] Lmme Kelly 166111 2,7051 19 3/1955 Ingwer 248/412 Street, NOW/31k, Cahf- 90650 3,480,250 11/1969 Hankins ..-248/161 [22] Filed: June 10, 1971 FOREIGN PATENTS OR APPLICATIONS [21] Appl. No.: 151,812 503,098 3/1939 Great Britain 248/171 Primary Examiner-Marion Parsons, Jr. [52] U.S. Cl 248/171, 248/55,2ig/83/5121S, Atwmey Hamld L Fox [51] Int. Cl F16m 11/38 [58] Field of Search 254/100, 98, DIG. 1; [57] ABSTRACT 248/49, 55, 169, 171, 405 A tripod type ack assembly or support device including camming means functioning when activated 5 R f r Cited to maintain the legs in their folded side-by-side relation UNITED STATES PATENTS with the body of the ack thereby rendering the assem- 1 bly easier to transport and store. 577,955 3/1897 Hearttagen 248/170 2,502,667 4/1950 Pagett .L 248/170 3 Claims, 4 Drawing Figures TRIPOD TYPE JACK ASSEMBLY The invention relates to pipe jacks or support devices and more particularly to a tripod type jack assemblies including camming means functioning to retain the legs thereof in their folded position, adjacent the body portion thereof, rendering the jack easier to transport and store.
To the best of Applicants knowledge devices of the present type are not obtainable on todays market. Previous devices of the tpe disclosed herein present problems, especially in connection with transportation and storage thereof. Normally jacks of the type referred to are of rigid construction and, therefore, considered expendable because of difficulties experienced in space required in moving them from one job to another and also because of storage problems encountered in a storage facility.
Accordingly it is a principal object of the present invention to provide a tripod type pipe jack assembly or support device incorporating camming means functioning to maintain the legs in side-by-side relation with the body portion of the jack, thereby rendering it easier to transport and store.
Another object is to provide a tripod type jack assembly with foldable legs in which one may be used in carrying it from one location to another.
Another object is to provide a tripod'type pipe jack assembly constructed sufficiently rigid to withstand any weight it is expected to support.
Although the characteristic features of the present invention are particularly pointed'out in the appended claims, the invention itself, also the manner in which it may be carried out, will be better understood by referring to the following description taken in connection with the accompanying drawings forming a part of this application and in which:
FIG. 1 is a perspective view showing a tripod pipe jack assembly of the type disclosed herein.
FIG. 2 is an exploded view in perspective of the tripod type jack assembly disclosed herein.
FIG. 3 is a side elevational view showing the jack assembly of FIG. 1 in its folded position.
FIG. 4 is an enlarged perspective view of the collar or camming means of the jack assembly of FIGS. 1 and 2.
Referring to the drawing for a preferred embodiment of the pipe jack assembly'of the type disclosed herein, the subject pipe jack llis shown in FIGS. 1 and 2. The jack is caused to assume a folded'position, as shown in FIG. 3, this position to be described as the disclosure progresses. Principal components of the jack assembly 11 include body and elevating portions l2.and 14, spider-like member 16- and collar 17, and leg member 18,
19, and 21, respectively.
The body portion 12 constitutes a length of hollow tubing 22 of cylindrical configuration on which thespider member 16 is received and has a sliding fit on the member 12. The member 16 is secured in a plurality of positions on the tube 12 by means of a set screw 20 as shown in FIGS. 1 and 2. Equally spaced around the mmeber 16 are leg holding members to which the legs 18, 19 and 21 are attached substantially as shown in FIG. 1. It will be seen that the upper wall of the member 16 has three rectnagular notches 23 provided therein. The notches 23 provide a firm footing for the upper end of the legs 18, 19 and 21 on the tube 22. In this respect the upper ends of the legs 18, 19 and 21 carry seating members 24 which are contoured to the shape of the member 12 and, therefore, provide a firm footing on the tube 22. It will be noticed that the side edges of the notches 23 also provide support and alignment for the legs 18, 19 and 21 at such time as the legs are in their extended position as the members 24 are received and bottomed in the notches 23 at this time as will be apparent from FIG. 2.
The elevating portion 14 of the jack 11 also constitutes a length of pipe or tubing 26 the outside diameter of which allows it to be telescopically received in the tube 22 and provides a sliding fit therein. The tube 26 carries a threaded cross member 27 at its upper end. The threaded rod 28 is received in the threaded portion of the elevating member 14 providing means for elevating or depressing the pipe 29 which lies in a pipecarrying angle 31 fixed to the top of rod 28. A pair of rollers 30 is mounted in the angle 31 by axle pins 32 and provides means for carrying the pipe assembly 29.
Details of the collar member 17 are shown in FIG. 4 and constitutes generally a hollow cylindrical tube 38. The collar 17 includes three notches 33 of rectangular configuration formed therein substantially as shown in FIG. 4. The notches 33 span the gusset plates 34 at the upper end of the legs l8, l9 and 21, when the latter are in their extended positions. The inside diameter of the collar 17 is such that it is received in surrounding and rotating relation around the notched portions of the spider-like member 16 as best seen in FIGS. 1 and 3. Extending radially outwardly from the outer surface of the collar 17, and adjacent the lower edges thereof, are camming means 36 which are received in notches 37 provided in the gussets 34 and function to hold the legs 18, 19 and 21 in their folded positions as best seen in FIG. 3'. It will be apparent that the collar 17 serves two purposes; first, it functions to hold the legs in their folded position as best seen in FIG. 3 and second, it functions to stabilize and hold the legs 18, 19 and 21 firmly in their open position as best seen in FIG. 1.
Accordingly it is seen that a tripod type pipe jack assembly is disclosed which is rigid and firm in its extended position including camming means enabling the jack to be transported and stored while requiring a minimum of space. It will also be apparent that the jack 11 may be picked up by one leg and hand carried from one location to another when in its folded position, the camming means 36 making this feature possible. It will also be apparent that the jack 11 is of sufficiently strong and rigid construction enabling it to withstand any load required.
What is claimed is:
1. In a tripod type jack adapted to elevate or depress a pipe assembly thereon, the combination comprising:
a. a lower body member and an upper elevating member constituting hollow cylindrical members having a telescoping relation with respect to each other adapted to support a pipe assebly thereon;
b. a spider-like member having a surrounding relation with respect to said body member;
c. leg members pivotally attached to said spider-like member by gusset plates equally spaced around the periphery of said spider-like member, said legs being movable between extended and folded positions and functioning to maintain the jack in upright attitude at such time as they are in their extended position;
said gusset plates having a camming groove provided therein;
camming means comprising a hollow cylindrical collar having a surrounding and sliding relation on said body member, said collar having three equally 5 spaced camming surfaces extending normal to the axis of said collar and positioned to be received in said camming grooves when said legs are in their folded position, thereby forcing and maintaining said legs in their folded position in side-by-side relation with respect to said body member.
. In apparatus as set forth in claim 1:
in which the upper end of said spider-like member contains three rectangular notches;
. the upper ends of said leg members having rectangular members on the ends thereof adapted to be received in said notches occupying the entire space provided by said notches;
c. the inner end of said seating members being contoured to the configuration of said body member thereby providing firm footing for said legs;
d. and said inside diameter of said collar exceeding the outside diameter of said spider-like member whereby the inner ends of said legs and the upper portion of said spider-like member are incircled in surrounding relation by said collar thereby locking said legs in their extended positions.
3. In apparatus as set forth in claim 1:
a. said elevating member including a rod portion and a lower supporting tube portion;
b. said tube portion including a threaded cross memher at the top thereof;
0. said rod portion being threaded and mating with said cross member;
(1. and said rod portion having pipe supporting means at the top thereof which may be elevated or depressed by rotating said cross member.

Claims (3)

1. In a tripod type jack adapted to elevate or depress a pipe assembly thereon, the combination comprising: a. a lower body member and an upper elevating member constituting hollow cylindrical members having a telescoping relation with respect to each other adapted to support a pipe assebly thereon; b. a spider-like member having a surrounding relation with respect to said body member; c. leg members pivotally attached to said spider-like member by gusset plates equally spaced around the periphery of said spider-like member, said legs being movable between extended and folded positions and functioning to maintain the jack in upright attitude at such time as they are in their extended position; d. said gusset plates having a camming groove provided therein; e. camming means comprising a hollow cylindrical collar having a surrounding and sliding relation on said body member, said collar having three equally spaced camming surfaces extending normal to the axis of said collar and positioned to be received in said camming grooves when said legs are in their folded position, thEreby forcing and maintaining said legs in their folded position in side-by-side relation with respect to said body member.
2. In apparatus as set forth in claim 1: a. in which the upper end of said spider-like member contains three rectangular notches; b. the upper ends of said leg members having rectangular members on the ends thereof adapted to be received in said notches occupying the entire space provided by said notches; c. the inner end of said seating members being contoured to the configuration of said body member thereby providing firm footing for said legs; d. and said inside diameter of said collar exceeding the outside diameter of said spider-like member whereby the inner ends of said legs and the upper portion of said spider-like member are incircled in surrounding relation by said collar thereby locking said legs in their extended positions.
3. In apparatus as set forth in claim 1: a. said elevating member including a rod portion and a lower supporting tube portion; b. said tube portion including a threaded cross member at the top thereof; c. said rod portion being threaded and mating with said cross member; d. and said rod portion having pipe supporting means at the top thereof which may be elevated or depressed by rotating said cross member.
US00151812A 1971-06-10 1971-06-10 Tripod type jack assembly Expired - Lifetime US3741509A (en)

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Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141526A (en) * 1977-08-09 1979-02-27 Norco Industries, Inc. Interlocking jack stand
US4492354A (en) * 1983-01-20 1985-01-08 R. B. Industries, Inc. Collapsible stand for roller support
US4738180A (en) * 1986-08-25 1988-04-19 Mcknight Edmund Instrument case and stand
US4813638A (en) * 1987-11-23 1989-03-21 Esperanza Y Cia, S.A. Bipod mortar stand, comprising one support mechanism and one lifting mechanism
US5280891A (en) * 1993-02-22 1994-01-25 Estes Rollin L Pipe welding support apparatus
US5769371A (en) * 1995-06-09 1998-06-23 Bandur; Kenneth B. Adjustable leveling stand
US6173929B1 (en) * 1999-02-25 2001-01-16 Robin Lapointe One arm lift
FR2809793A1 (en) * 2000-06-05 2001-12-07 Raymond Garcia Stand for the support of people or objects, resting on four feet of which at least two of the feet can be independently articulated one in relation to the other to allow stability of the support on uneven ground
US6375135B1 (en) * 1998-01-15 2002-04-23 Ultimate Support Systems, Inc. High strength engineered collapsible tripod
US6536723B1 (en) * 1999-08-24 2003-03-25 Nihon Nelbon Seiki Kogyo Kabushiki Kaisha Tripod with improved telescopic extension
US20030230839A1 (en) * 2002-06-04 2003-12-18 Michael Ursell Rollerstand
US6725971B1 (en) * 2002-05-22 2004-04-27 Richard Bair Pipe jack
US20050218275A1 (en) * 2004-04-06 2005-10-06 Allan Keating Stand
US20060269388A1 (en) * 2003-02-27 2006-11-30 D Alessandro Angelo Billet loader for extrusion presses
US20080042528A1 (en) * 2001-06-08 2008-02-21 Krueger International, Inc. Table
US20080078914A1 (en) * 2006-09-18 2008-04-03 Tsun-Wu Liao Tripod stand
US20080106018A1 (en) * 2006-11-08 2008-05-08 Bob Bellavance Pivoting head for welding stand
US20100282926A1 (en) * 2009-05-11 2010-11-11 Suzhou Synta Optical Technology Co., Ltd. Continuously angle-adjustable multifunction tripod
CN101668982B (en) * 2008-04-17 2011-09-07 伟如宝株式会社 Leg device
US8146871B1 (en) * 2006-11-03 2012-04-03 Kulp Jack H Portable sign stand
US8464410B1 (en) * 2006-09-08 2013-06-18 Mcelroy Manufacturing, Inc. Rack type pipe feeder for a pipe fusion machine
US8646731B2 (en) 2011-04-28 2014-02-11 Grant Burles Workpiece support assembly
US8690517B1 (en) 2008-09-11 2014-04-08 Mcelroy Manufacturing, Inc. Rack type pipe feeder for a pipe fusion machine
US20140216588A1 (en) * 2013-02-05 2014-08-07 Chad Tasch System and Method for Irrigating Liquids Over an Obstacle
USD747562S1 (en) * 2013-12-16 2016-01-12 Fred C. Alford Wildlife feeder legs
US9394106B2 (en) 2006-09-08 2016-07-19 Mcelroy Manufacturing, Inc. Rack type pipe feeder for a pipe fusion machine
EP3187767A1 (en) 2015-12-29 2017-07-05 Sumner Manufacturing Company, LLC Jack stand apparatus adaptable to various diameters of pipe
US10281081B2 (en) * 2017-03-24 2019-05-07 Oberwerk Corporation Leg for an apparatus for supporting an object
US10723603B1 (en) 2018-12-11 2020-07-28 Matthew James Curtis Off-road jack
US20210102644A1 (en) * 2016-10-21 2021-04-08 Quanta Associates, L.P. Drill pipe or product line improved rollers and movement
US11480290B2 (en) * 2019-12-20 2022-10-25 Really Right Stuff, Llc Travel tripod
US20230278172A1 (en) * 2022-03-02 2023-09-07 Bevan Badeaux Magnetized Pipe Stand Assembly

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US577955A (en) * 1897-03-02 Folding seat
GB503098A (en) * 1937-10-05 1939-03-31 Martindale Electric Company Lt Improvements in and relating to foldable supporting stands
US2502667A (en) * 1947-02-14 1950-04-04 Louis W Pagett Tripod or stand
US2532168A (en) * 1948-06-12 1950-11-28 Frank J Jakoubek Mine roof and timbering jack
US2587511A (en) * 1949-07-22 1952-02-26 Nerman Tom Tripod
US2705119A (en) * 1949-12-06 1955-03-29 Ridge Tool Co Pipe support stand
US3480250A (en) * 1967-08-31 1969-11-25 Mole Richardson Co Upright stand with adjustable leg span

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
US577955A (en) * 1897-03-02 Folding seat
GB503098A (en) * 1937-10-05 1939-03-31 Martindale Electric Company Lt Improvements in and relating to foldable supporting stands
US2502667A (en) * 1947-02-14 1950-04-04 Louis W Pagett Tripod or stand
US2532168A (en) * 1948-06-12 1950-11-28 Frank J Jakoubek Mine roof and timbering jack
US2587511A (en) * 1949-07-22 1952-02-26 Nerman Tom Tripod
US2705119A (en) * 1949-12-06 1955-03-29 Ridge Tool Co Pipe support stand
US3480250A (en) * 1967-08-31 1969-11-25 Mole Richardson Co Upright stand with adjustable leg span

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4141526A (en) * 1977-08-09 1979-02-27 Norco Industries, Inc. Interlocking jack stand
US4492354A (en) * 1983-01-20 1985-01-08 R. B. Industries, Inc. Collapsible stand for roller support
US4738180A (en) * 1986-08-25 1988-04-19 Mcknight Edmund Instrument case and stand
US4813638A (en) * 1987-11-23 1989-03-21 Esperanza Y Cia, S.A. Bipod mortar stand, comprising one support mechanism and one lifting mechanism
US5280891A (en) * 1993-02-22 1994-01-25 Estes Rollin L Pipe welding support apparatus
US5769371A (en) * 1995-06-09 1998-06-23 Bandur; Kenneth B. Adjustable leveling stand
US6375135B1 (en) * 1998-01-15 2002-04-23 Ultimate Support Systems, Inc. High strength engineered collapsible tripod
US6173929B1 (en) * 1999-02-25 2001-01-16 Robin Lapointe One arm lift
US6536723B1 (en) * 1999-08-24 2003-03-25 Nihon Nelbon Seiki Kogyo Kabushiki Kaisha Tripod with improved telescopic extension
FR2809793A1 (en) * 2000-06-05 2001-12-07 Raymond Garcia Stand for the support of people or objects, resting on four feet of which at least two of the feet can be independently articulated one in relation to the other to allow stability of the support on uneven ground
US20080042528A1 (en) * 2001-06-08 2008-02-21 Krueger International, Inc. Table
US6725971B1 (en) * 2002-05-22 2004-04-27 Richard Bair Pipe jack
US6988719B2 (en) 2002-06-04 2006-01-24 Htc Products, Inc. Rollerstand
US20030230839A1 (en) * 2002-06-04 2003-12-18 Michael Ursell Rollerstand
US20060269388A1 (en) * 2003-02-27 2006-11-30 D Alessandro Angelo Billet loader for extrusion presses
US7357383B2 (en) * 2003-02-27 2008-04-15 Danieli & C. Officine Meccaniche S.P.A. Billet loader for extrusion presses
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