US3198562A - Internally expanding locking device for telescoped tubes - Google Patents

Internally expanding locking device for telescoped tubes Download PDF

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Publication number
US3198562A
US3198562A US259998A US25999863A US3198562A US 3198562 A US3198562 A US 3198562A US 259998 A US259998 A US 259998A US 25999863 A US25999863 A US 25999863A US 3198562 A US3198562 A US 3198562A
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United States
Prior art keywords
base
opening
tube
seat support
support tube
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Expired - Lifetime
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US259998A
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Marlin M Smith
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West Coast Industries Inc
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West Coast Industries Inc
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Priority to US259998A priority Critical patent/US3198562A/en
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Publication of US3198562A publication Critical patent/US3198562A/en
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Expired - Lifetime legal-status Critical Current

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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
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/002Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints for pipes having a rectangular cross-section
    • 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
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/12Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
    • F16L27/127Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position
    • F16L27/1275Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position by means of at least an external threaded bolt
    • F16L27/12751Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement with means for locking the longitudinal adjustment or movement in the final mounted position by means of at least an external threaded bolt the threaded bolt extending longitudinally
    • 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
    • Y10T403/70Interfitted members
    • Y10T403/7062Clamped members
    • Y10T403/7064Clamped members by wedge or cam
    • Y10T403/7066Clamped members by wedge or cam having actuator
    • Y10T403/7067Threaded actuator
    • Y10T403/7069Axially oriented

Definitions

  • the present invention relates primarily to a device for locking a seat support tube in a base tube.
  • An object of the invention is to provide a small, inexpensive, easily-adjusted locking device having few operable parts and insertable as a unit in a seat support tube.
  • a further object of the invention is to provide an easily adjustable locking device that rigidly locks a seat support tube in a base tube without deforming either of the tubes.
  • a still further object of the invention is to provide a locking device that will not work loose or require frequent adjustment with heavy use.
  • FIGURE 1 is a side view of a seat support tube in a base tube.
  • FIGURE 2 is a perspective view of a pair of base tubes mounted on supporting brackets.
  • FIGURE 3 is a top sectional view along the line 33 in FIGURE 1 showing a seat support tube locked in a base tube with the device of my invention.
  • FIGURE 4 is a similar view showing the device in an unlocked position.
  • FIGURE 4a is a perspective view of the lower section of a seat support tube showing a side opening near one end thereof and a stop plate near said end contiguous with the opening and extending into said tube.
  • FIGURE 5 is a detailed side sectional view of a seat support tube and a base tube showing a removable covering on the wrench hole in the seat support tube.
  • FIGURE 6 is a cross-sectional view of the seat support tube and base tube taken along the line 6-6 in FIG- URE 1.
  • FIGURE 7 is an enlarged top sectional view of the locking device.
  • FIGURE 8 is a perspective view of the device showing the opening in one of its members.
  • the base tube may be substantially larger than the end of the seat support tube and the tubes may have any desired cross-sectional configuration. It is therefore obvious that my invention will permit a mass produced seat support tube to be locked in a variety of different sized base tubes. In practice, I have found that close-fitting, non-circular tubes having the same cross-sectional configuration give the best results because such configuration prevents rotation of the seat support tube in the base tube.
  • the locking device comprises a first member 9 and a second member 19 positioned in the seat support tube.
  • the first member has a base 11, an inclined surface 12, and a locking surface 13.
  • the second member has a base 14, an inclined surface 15, and a locking surface 16.
  • a stop plate 17 may be attached to the seat support tube near the end contiguous with the side opening therein and extending into said tube. While 3,198,562 7 Fatented Aug. 3, 1965 shown in FIGURE 8, extending from its base to its inclined surface, the bore in the first member being in alignment with the opening in the second member.
  • a bolt 20 has a head 21 abutting the base of the second member, a body 22.
  • a lockwasher 24 may be inserted between the head and the base of the second member.
  • the base of the first member is adapted to slidably engage the stop plate and the locking surface is adapted to pass through the side opening in the seat support tube.
  • the opening in the second base of the first member is remote from the base of the member, as best shown in FIGURE 8, is so constructed and arranged as to permit movement of the bolt away from the locking surface of the second member as the bolt is screwed into the first member.
  • the locking surface of each element should be 1 /2 sq. in. or larger.
  • One of the main advantages of the device described over the prior art is that it rigidly locks the seat support tube in the base tube without deforming either of the tubes. When the device is unlocked the tubes move freely, thereby facilitating adjustment from one locked position to another.
  • the mechanical advantage of the device permits an unusually tight fit that will not work loose or require frequent adjustment with heavy use.
  • a seat assembly comprising a seat support tube having a side opening near one end, a stop plate near said end contiguous with said opening and extending into said tube, a base tube surrounding said end and said opening, a locking device comprising a first member extending through said opening and a second member positioned in the seat support tube, each of said members having a base, an inclined surface, and a locking surface, the base of the first member slidably engaging said stop plate, the base of the first member being remote from the base of the second member, the inclined surface of the first member slidably engaging the inclined surface of the second member, the locking surface of the first member engaging the 'base tube, the locking surface of the second member engaging the seat support tube opposite said opening, the first member having an internally threaded jbore extending from its base to its inclined surface, the second member having an opening extending from its base to its inclined surface, the bore in the first member being in alignment with the opening in the second member, a bolt having a head, a body and a threaded end, the
  • a seat assembly as defined in claim 1 in which said first and second members are secured inassembled relationship by said bolt in such a manner that the distance between said locking surfaces may be adjusted to less than the distance between the adjacent surfaces of said base tube to permit said seat support tube to be moved relatively to said base tube.

Description

Aug. 3, 1965 M- M. SMITH 3,198,552
INTERNALLY EXPANDING LOCKING DEVICE FOR TELESCOPED TUBES Filed Feb. 20, 1963 A9 INVENTOR. Mia/m M sly/7H United States Patent C F 3,198,562 INTERNALLY EXPANDING LOCKING DEVICE FOR TELESCOPED TUBES Marlin M. Smith, Los Angeles, Calif assignor to West Coast Industries, San Francisco, Calif, a corporation of California I Filed Feb. 20, 1963, Ser. No. 259,998 3 Claims. (Cl. 287-58) The present invention relates primarily to a device for locking a seat support tube in a base tube.
An object of the invention is to provide a small, inexpensive, easily-adjusted locking device having few operable parts and insertable as a unit in a seat support tube.
A further object of the invention is to provide an easily adjustable locking device that rigidly locks a seat support tube in a base tube without deforming either of the tubes.
A still further object of the invention is to provide a locking device that will not work loose or require frequent adjustment with heavy use.
These and other objects and advantages will appear as the description progresses.
In the drawing:
FIGURE 1 is a side view of a seat support tube in a base tube.
FIGURE 2 is a perspective view of a pair of base tubes mounted on supporting brackets.
FIGURE 3 is a top sectional view along the line 33 in FIGURE 1 showing a seat support tube locked in a base tube with the device of my invention.
FIGURE 4 is a similar view showing the device in an unlocked position.
FIGURE 4a is a perspective view of the lower section of a seat support tube showing a side opening near one end thereof and a stop plate near said end contiguous with the opening and extending into said tube.
FIGURE 5 is a detailed side sectional view of a seat support tube and a base tube showing a removable covering on the wrench hole in the seat support tube.
FIGURE 6 is a cross-sectional view of the seat support tube and base tube taken along the line 6-6 in FIG- URE 1.
FIGURE 7 is an enlarged top sectional view of the locking device.
FIGURE 8 is a perspective view of the device showing the opening in one of its members.
In the preferred embodiment of my invention, I attach a base tube 1 to the floor 2 by means of brackets 3 and screws 4. Concrete may then be poured over both the brackets and tubes, provided the ends 5 are left open. I then insert the end 6 of a seat support tube 7 in the base tube until the base tube surroundns the end of the seat support tube and the side opening 8 near said end. While the drawing shows close-fitting square tubes, neither is essential to my invention. The base tube may be substantially larger than the end of the seat support tube and the tubes may have any desired cross-sectional configuration. It is therefore obvious that my invention will permit a mass produced seat support tube to be locked in a variety of different sized base tubes. In practice, I have found that close-fitting, non-circular tubes having the same cross-sectional configuration give the best results because such configuration prevents rotation of the seat support tube in the base tube.
In one form of my invention, the locking device comprises a first member 9 and a second member 19 positioned in the seat support tube. The first member has a base 11, an inclined surface 12, and a locking surface 13. The second member has a base 14, an inclined surface 15, and a locking surface 16. A stop plate 17 may be attached to the seat support tube near the end contiguous with the side opening therein and extending into said tube. While 3,198,562 7 Fatented Aug. 3, 1965 shown in FIGURE 8, extending from its base to its inclined surface, the bore in the first member being in alignment with the opening in the second member. A bolt 20 has a head 21 abutting the base of the second member, a body 22. extending through the opening in the second member, and a threaded end 23 engaging the internally threaded bore of the first member. To prevent the bolt from turning, a lockwasher 24 may be inserted between the head and the base of the second member. Thus, the word abutting as used herein means touching or located in close proximity to. The base of the first member is adapted to slidably engage the stop plate and the locking surface is adapted to pass through the side opening in the seat support tube. Also, the opening in the second base of the first member is remote from the base of the member, as best shown in FIGURE 8, is so constructed and arranged as to permit movement of the bolt away from the locking surface of the second member as the bolt is screwed into the first member.
I lock the tubes by removing the covering 25 and inserting a socket wrench 26 through a hole 27 in the seat support tube to engage the head of the bolt. I then force the base of the first member against the stop plate and turn the bolt, which forces the locking surface of the second member against the inside of the seat support tube and the locking surface of the first member against the inside of the base tube. For best results, the locking surface of each element should be 1 /2 sq. in. or larger.
One of the main advantages of the device described over the prior art is that it rigidly locks the seat support tube in the base tube without deforming either of the tubes. When the device is unlocked the tubes move freely, thereby facilitating adjustment from one locked position to another. In addition, the mechanical advantage of the device permits an unusually tight fit that will not work loose or require frequent adjustment with heavy use.
Having fully described my invention it is to be understood that I am not to be limited to the details herein set forth but that my invention is of the full scope of the appended claims.
I claim:
1. A seat assembly comprising a seat support tube having a side opening near one end, a stop plate near said end contiguous with said opening and extending into said tube, a base tube surrounding said end and said opening, a locking device comprising a first member extending through said opening and a second member positioned in the seat support tube, each of said members having a base, an inclined surface, and a locking surface, the base of the first member slidably engaging said stop plate, the base of the first member being remote from the base of the second member, the inclined surface of the first member slidably engaging the inclined surface of the second member, the locking surface of the first member engaging the 'base tube, the locking surface of the second member engaging the seat support tube opposite said opening, the first member having an internally threaded jbore extending from its base to its inclined surface, the second member having an opening extending from its base to its inclined surface, the bore in the first member being in alignment with the opening in the second member, a bolt having a head, a body and a threaded end, the head abutting the base of the second member, the body extending through the opening in the second member, and the 3 threaded end engaging the internally thread bore of the first member, the opening in said second member being so constructed and arranged as to permit movement of the locking surface of the second member away from the bolt as the boltis screwed into'the first member.
2. A seat assembly as defined in claim 1 in which said first and second members are secured inassembled relationship by said bolt in such a manner that the distance between said locking surfaces may be adjusted to less than the distance between the adjacent surfaces of said base tube to permit said seat support tube to be moved relatively to said base tube.
3. A seat assembly as defined in claim 1 in which the height of said stop plate is no greater than the maximum height of each of said members.
References Cited by the Examiner UNITED STATES PATENTS 612,489 10/98 Dean. 624,232 5/99 Marty. 641,895 1/00 Scot/ill. 1,379,784 5/21 Schwartz. 3,006,230 10/61 McCauley 285421 X FOREIGN PATENTS 871,304 6/61 Great Britain.
CARL W. TOMLIN, Primary Exarminer.

Claims (1)

1. A SEAT ASSEMBLY COMPRISING A SEAT SUPPORT TUBE HAVING A SIDE OPENING NEAR ONE END, A STOP PLATE NEAR SAID END CONTIGUOUS WITH SAID OPENING AND EXTENDING INTO SAID TUBE, A BASE TUBE SURROUNDING SAID END AND SAID OPENING, A LOCKING DEVICE COMPRISING A FIRST MEMBER EXTENDING THROUGH SAID OPENING AND A SECOND MEMBER POSITIONED IN THE SEAT SUPPORT TUBE, EACH OF SAID MEMBERS HAVING A BASE, AN INCLINED SURFACE, AND A LOCKING SURFACE, THE BASE OF THE FIRST MEMBER SLIDABLY ENGAGING SAID STOP PLATE, THE BASE OF THE FIRST MEMBER BEING REMOTE FROM THE BASE OF THE SECOND MEMBER, THE INCLINED SURFACE OF THE FIRST MEMBER SLIDABLY ENGAGING THE INCLINED SURFACE OF THE SECOND MEMBER, THE LOCKING SURFACE OF THE FIRST MEMBER ENGAGING THE BASE TUBE, THE LOCKING SURFACE OF THE SECOND MEMBER ENGAGING THE SEAT SUPPORT TUBE OPPOSITE SAID OPENING, THE FIRST MEMBER HAVING AN INTERNALLY THREADED BORE EXTENDING FROM ITS BASE TO ITS INCLINED SURFACE, THE SECOND MEMBER HAVING AN OPENING EXTENDING FROM ITS BASE TO ITS INCLINED SURFACE, THE BORE IN THE FIRST MEMBER BEING IN ALIGNMENT WITH THE OPENING IN THE SECOND MEMBER, A BOLT HAVING A HEAD, A BODY AND A THREADED END, THE HEAD ABUTTING THE BASE OF THE SECOND MEMBER, THE BODY EXTENDING THROUGH THE OPENING IN THE SECOND MEMBER, AND THE THREADED END ENGAGING THE INTERNALLY THREAD BORE OF THE FIRST MEMBER, THE OPENING IN SAID SECOND MEMBER BEING SO CONSTRUCTED AND ARRANGED AS TO PERMIT MOVEMENT OF THE LOCKING SURFACE OF THE SECOND MEMBER AWAY FROM THE BOLT AS THE BOLT IS SCREWED INTO THE FIRST MEMBER.
US259998A 1963-02-20 1963-02-20 Internally expanding locking device for telescoped tubes Expired - Lifetime US3198562A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574375A (en) * 1969-05-26 1971-04-13 Ameron Inc Multiple section arm extension for traffic signal poles
US3764177A (en) * 1971-10-04 1973-10-09 E Woodward Stake pocket adapter
US3885882A (en) * 1972-05-17 1975-05-27 Lucien Curti Coupling for the assembly of closely jointed tubular elements
US4530614A (en) * 1981-07-10 1985-07-23 Rueter Ewald Framework made of hollow sections
US4754584A (en) * 1986-05-29 1988-07-05 Uniwall Corp. Modular security cell
US5685686A (en) * 1996-03-22 1997-11-11 Yakima Products Article-carrying rack and mount for mounting the same
US5785461A (en) * 1996-01-18 1998-07-28 Lambert; Gene F. Wedge tensioning device
US5897268A (en) * 1996-03-01 1999-04-27 Deville Sa Secateurs Pradines Device for assembling and locking two tubes, and its application to the manufacture of a telescopic rod
US6203239B1 (en) * 2000-01-19 2001-03-20 Domenic Mucciacciaro Wedge plug tubing connector
US20090110474A1 (en) * 2006-05-18 2009-04-30 Rk Intellectual Property (Pty) Ltd Connector for panels or panel-like components
US20100205888A1 (en) * 2006-05-18 2010-08-19 Rk Intellectual Property (Pty) Ltd Connector for panels or panel-like components
US20110058896A1 (en) * 2009-03-26 2011-03-10 Pieter Retief Krige Connector for panels or panel-like components
US9376063B2 (en) 2012-04-30 2016-06-28 Yakima Products, Inc. Vehicle carrier system
US9421836B1 (en) 2015-07-08 2016-08-23 Rocky Mountain Hitch LLC Hitch mount assemblies including trailer hitch adapter sleeves
US9586450B2 (en) * 2014-10-01 2017-03-07 Dixon Ford Trailer hitch assemblies
US10647263B2 (en) 2018-06-25 2020-05-12 Thule Sweden Ab Hitch stinger with flat surface wedges
US10850677B2 (en) 2018-06-22 2020-12-01 Thule Sweden Ab Automatic securement pin system for a hitch connector

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US612489A (en) * 1898-10-18 Expansion-bolt fastening
US624232A (en) * 1899-05-02 marty
US641895A (en) * 1898-07-01 1900-01-23 Geo L Thompson Mfg Company Internal fastener for tubular telescoping parts.
US1379784A (en) * 1920-11-29 1921-05-31 Schwartz Israel Handle-bar-post-repair part for bicycles
GB871304A (en) * 1958-04-19 1961-06-28 Ulrich Grajecki Mitre joints for hollow members
US3006230A (en) * 1958-07-22 1961-10-31 Jr Herbert J Mccauley Sheet metal wedge nut having wedging end portions

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US612489A (en) * 1898-10-18 Expansion-bolt fastening
US624232A (en) * 1899-05-02 marty
US641895A (en) * 1898-07-01 1900-01-23 Geo L Thompson Mfg Company Internal fastener for tubular telescoping parts.
US1379784A (en) * 1920-11-29 1921-05-31 Schwartz Israel Handle-bar-post-repair part for bicycles
GB871304A (en) * 1958-04-19 1961-06-28 Ulrich Grajecki Mitre joints for hollow members
US3006230A (en) * 1958-07-22 1961-10-31 Jr Herbert J Mccauley Sheet metal wedge nut having wedging end portions

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574375A (en) * 1969-05-26 1971-04-13 Ameron Inc Multiple section arm extension for traffic signal poles
US3764177A (en) * 1971-10-04 1973-10-09 E Woodward Stake pocket adapter
US3885882A (en) * 1972-05-17 1975-05-27 Lucien Curti Coupling for the assembly of closely jointed tubular elements
US4530614A (en) * 1981-07-10 1985-07-23 Rueter Ewald Framework made of hollow sections
US4754584A (en) * 1986-05-29 1988-07-05 Uniwall Corp. Modular security cell
US5785461A (en) * 1996-01-18 1998-07-28 Lambert; Gene F. Wedge tensioning device
US5897268A (en) * 1996-03-01 1999-04-27 Deville Sa Secateurs Pradines Device for assembling and locking two tubes, and its application to the manufacture of a telescopic rod
US5685686A (en) * 1996-03-22 1997-11-11 Yakima Products Article-carrying rack and mount for mounting the same
US6203239B1 (en) * 2000-01-19 2001-03-20 Domenic Mucciacciaro Wedge plug tubing connector
US20090110474A1 (en) * 2006-05-18 2009-04-30 Rk Intellectual Property (Pty) Ltd Connector for panels or panel-like components
US20100205888A1 (en) * 2006-05-18 2010-08-19 Rk Intellectual Property (Pty) Ltd Connector for panels or panel-like components
US8162559B2 (en) * 2006-05-18 2012-04-24 Rk Intellectual Property (Pty) Ltd Connector for panels or panel-like components
US20110058896A1 (en) * 2009-03-26 2011-03-10 Pieter Retief Krige Connector for panels or panel-like components
US9376063B2 (en) 2012-04-30 2016-06-28 Yakima Products, Inc. Vehicle carrier system
US9586450B2 (en) * 2014-10-01 2017-03-07 Dixon Ford Trailer hitch assemblies
US9421836B1 (en) 2015-07-08 2016-08-23 Rocky Mountain Hitch LLC Hitch mount assemblies including trailer hitch adapter sleeves
US10850677B2 (en) 2018-06-22 2020-12-01 Thule Sweden Ab Automatic securement pin system for a hitch connector
US10647263B2 (en) 2018-06-25 2020-05-12 Thule Sweden Ab Hitch stinger with flat surface wedges

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