US3467352A - Adjustable clamp - Google Patents

Adjustable clamp Download PDF

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Publication number
US3467352A
US3467352A US588460A US58846066A US3467352A US 3467352 A US3467352 A US 3467352A US 588460 A US588460 A US 588460A US 58846066 A US58846066 A US 58846066A US 3467352 A US3467352 A US 3467352A
Authority
US
United States
Prior art keywords
clamping device
housings
guide rod
rollers
inclined surfaces
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
US588460A
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English (en)
Inventor
Wilhelm Valentin Bohler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3467352A publication Critical patent/US3467352A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/28—Chairs or stools with vertically-adjustable seats with clamps acting on vertical rods
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/402—Support for the head or the back for the back adjustable in height
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/10—Telescoping systems
    • F16B7/14—Telescoping systems locking in intermediate non-discrete positions
    • F16B7/1409—Telescoping systems locking in intermediate non-discrete positions with balls or rollers urged by an axial displacement of a wedge or a conical member
    • 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
    • F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
    • F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
    • F16M13/022—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle repositionable
    • 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
    • F16M2200/04—Balancing means
    • F16M2200/041—Balancing means for balancing rotational movement of the head

Definitions

  • An adjustable clamp has a main housing with two inclined surfaces. Rollers are positioned in respective housings between the inclined surfaces and an object. The main housing is clamped to the object by wedging the rollers between the inclined surfaces and the object.
  • the invention relates to an adjustable clamp for an article such as a chair having a vertically and laterally adjustable seat, back-rest, or the like, the adjustable clamp being provided for locking or releasing the individual adjustable parts of said chair, said adjustable chair parts being arranged displaceably on a guide rod.
  • Another known device provides a slot in the guide rod, a locking screw projecting through said slot. This device, however, is hard to manipulate, since great strength is required to release it.
  • the aim of the invention to produce an adjustable clamping device which is of simple design and has no very accurate fitting but which in spite of this provides secure retention of the chair parts.
  • the clamping device exhibits at least two surfaces directed towards each other and inclined in the direction of displacement, and at least one wedge or rotary element which, in the locked condition at least, lies against an inclined surface, said wedge being held by a housing capable of moving along the guide rod and relatively to said inclined surfaces.
  • This configuration makes easy release of the clamping device possible.
  • An unusual advantage is that said clamping device is not dependent upon the weight-loading, and may therefore also be applied for the lateral adjustment of chair parts.
  • the chair may thus be built up from standard parts, since many identical or similar parts may be used.
  • the arrangement according to the invention makes it possible to use square tubes for the chair frame, in contrast to known designs.
  • the invention expediently provides two wedge-shaped plates facing each other in relation to the direction of the guide rod, and exhibiting a surface inclined to said guide rods, wedges or rotary elements being displaceably mounted between said plates and said guide rod.
  • This construction is of simple design. The lock is released merely by pressure on the housing accommodating the wedges or rotary elements, whereupon the relevant chair part may be moved to any other desired position.
  • FIGURE 1 shows a clamping device with its associated attachment device for a back-rest
  • FIGURE 2 shows an example of a modified embodiment of the clamping device
  • FIGURE 3 shows a cross sectional view of the clamping device taken along the line 33 in FIGURE 1.
  • the clamping device 6 consists essentially of plates 7 and 8, of rotary elements 20 and 21 in the form of rollers, and of housings 13 and 14 guiding said rollers. Plates 7 and 8, in the area thereof facing a guide rod 12, exhibit inclined surfaces 23 and 24, against which lie rollers 20 and 21. Said plates 7 and -8 are rigidly screwed to an attachment plate 11 and inclined surface 23 and 24 enclose with guide rod 12 an acute angle, so that said plates are essentially in the form of wedges screwed by means of screws 9 and 10 to said attachment plate 11.
  • rollers 20 and 21 which are made to be displaceable in the direction of said guide rod 12.
  • said rollers 20 and 21 are retained in cage-like housings 13 and 14 which can be pulled in and out after the manner of a drawer.
  • a spiral spring 26 Arranged between these two opposing housings 13 and 14 is a spiral spring 26 which positively holds them apart.
  • Housings 13 and 14 are laterally and outwardly guided by attachment plate 11, and are arranged with a spacing 25 in relation to the guide rod.
  • a bearing plate 5 serving as a counterpart to clamping device 16 and at the same time accommodating a bearing 17, the back-rest attached to plate 18 being adjustable in its oblique position by head 19 pivotally mounted in said bearing.
  • housings 13 and 14 are pressed together by their external surfaces 15, 16 in the direction of arrows 1, 2.
  • the housings are released and are moved outwardly in the direction of arrows 3 and 4 by the pressure of spring 26 guided on pins 22 and 27. This results in automatic locking without any outside intervention, since the rollers are pressed against guide rod 12 by inclined surfaces 23 and 24.
  • FIGURE 2 shows another example of execution of the clamping device, in which housings 13 and 14 enclose wedge-shaped plates 7 and 8. Said housings 13' and 14' exhibit longitudinal slots 28, 29 allowing for the passage of screws 9, 10, so that wedge-shaped plates 7 and 8 may be screwed to attachment plate 11.
  • FIGURES 1 and 2 Another possible design, not shown, contemplates an externally-actuated eccentric for moving housings 13, 14, a tension spring being arranged between said housings 13, 14 for the purpose of locking clamping device 6.
  • this arrangement having an eccentric the housings are pushed apart to release the lock, the inclined surfaces running in directions opposite to those in FIGURES 1 and 2.
  • rollers instead of rollers, it is also possible to use balls, in which case, of course, round guide rods may also be used. It is furthermore possible to arrange wedges which are guided in the housings and lie against the steep sur faces of the plates.
  • An advantage of the clamping device according to the invention is that the individual parts may be made of plastic. This is a simple and cost-saving design. It is also of advantage to make the surfaces of the wedges or rotary elements, and of the inclined surfaces, rough.
  • the clamping device according to the invention may of course also be used for the lateral displacement of chair parts, and for the vertical adjustment of the seating surface.
  • the adjustment is always stepless.
  • the spring incorporated compensates for machining tolerances. Wear in individual parts does not require the procurement of replacement parts, since the spring compensates for this wear and ensures a firm hold on the guide rod at all times.
  • An adjustable clamping device for adjustably fastening an object to an elongated guide rod, comprising:
  • a main housing having a main opening therethrough formed by two spaced surfaces that are adapted to be positioned on opposite sides of said guide rod;
  • both of said inclined surfaces slope from said intermediate location away from said part of said main housing, and wherein said urging means comprise a compression spring.
  • each of said rollers is cylindrically shaped.
  • each of said rollers is spherically shaped.
  • both of said inclined surfaces slope from said intermediate location toward said part of said main housing, and wherein said urging means comprise a tension spring.
  • each of said rollers is cylindrically shaped.
  • each of said rollers is spherically shaped.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chairs Characterized By Structure (AREA)
  • Clamps And Clips (AREA)
US588460A 1965-11-12 1966-10-21 Adjustable clamp Expired - Lifetime US3467352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965B0084476 DE1753671B1 (de) 1965-11-12 1965-11-12 Sessel mit verstellbarer sitzflaeche und oder rueckenlehne

Publications (1)

Publication Number Publication Date
US3467352A true US3467352A (en) 1969-09-16

Family

ID=6982444

Family Applications (1)

Application Number Title Priority Date Filing Date
US588460A Expired - Lifetime US3467352A (en) 1965-11-12 1966-10-21 Adjustable clamp

Country Status (2)

Country Link
US (1) US3467352A (de)
DE (1) DE1753671B1 (de)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578384A (en) * 1968-11-25 1971-05-11 Mccord Corp Adjustable headrest for vehicle seats
US3642321A (en) * 1969-01-28 1972-02-15 Bernhard Schwarz Head and neck rest
DE2305928A1 (de) * 1973-02-07 1974-08-08 Kuerbi & Niggeloh Stativ
DE2355900A1 (de) * 1973-11-08 1975-05-15 Kuerbi & Niggeloh Stativ
US3993350A (en) * 1974-02-01 1976-11-23 Teleflex Morse Ltd. Seat arm adjustment mechanisms
US4278224A (en) * 1977-06-30 1981-07-14 Arakawa, Co. Ltd. Wedging action fixture
US4318526A (en) * 1978-09-13 1982-03-09 Werner Per G Adjustable telescopic device
US4360180A (en) * 1979-02-12 1982-11-23 Jeandal Device for locking the drawing board of a drawing table assembly
US4381095A (en) * 1980-10-14 1983-04-26 Mayline Co., Inc. Apparatus for supporting a work surface
DE3338023A1 (de) * 1983-10-17 1985-04-25 No-Sag Drahtfedern Gmbh, 4835 Rietberg Kopfstuetze
US4614273A (en) * 1984-06-04 1986-09-30 Sugatsune Kogyo Co., Ltd. Free stop retainer
US4636103A (en) * 1983-10-13 1987-01-13 Instro Precision Ltd. Locking mechanism
US4802198A (en) * 1985-04-01 1989-01-31 Siemens Aktiengesellschaft X-ray equipment support apparatus
US4807272A (en) * 1985-04-01 1989-02-21 Siemens Aktiengesellschaft X-ray equipment support apparatus
US5186429A (en) * 1991-09-26 1993-02-16 Kurt Linnepe Elongatable support
EP0663314A1 (de) * 1993-12-23 1995-07-19 Dunlop Cox Ltd Verriegelungsvorrichtung
US5617980A (en) * 1994-03-23 1997-04-08 Armament Systems And Procedures, Inc. Baton locking mechanism for expandable baton carriers
US5882077A (en) * 1996-01-10 1999-03-16 Sifa Sitzfabrik Gmbh Height adjustment of back rests
US5884969A (en) * 1996-01-10 1999-03-23 Sifa Sitzfabrik Gmbh Release for a height adjustment of back rests
US6354227B1 (en) 2000-01-11 2002-03-12 Steelcase Development Corporation Adjustable table with worksurface having write-on surface adapted for use as projection screen
US20040104611A1 (en) * 1998-01-21 2004-06-03 Caruso Jerome C. Adjustable armrest
US20090050279A1 (en) * 2007-08-24 2009-02-26 Seiko Epson Corporation Screen
EP2759230A1 (de) * 2013-01-23 2014-07-30 L & P Property Management Company Mechanismus zum Einstellen einer Stuhllehne und Stuhl
US20140360319A1 (en) * 2013-06-07 2014-12-11 Chin-Tan Huang Hand tool
US9277820B2 (en) * 2014-04-30 2016-03-08 Wipro Limited Stabilizing mechanism for a shelf assembly
US10219966B2 (en) * 2016-12-09 2019-03-05 Kavo Dental Technologies, Llc Headrest adjustment system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751152A (en) * 1929-03-06 1930-03-18 Evan C Harter Seat structure
DE582090C (de) * 1931-03-04 1933-08-08 Giorgio Miniati Kugelklemmgesperrartige Schnellbefestigung fuer Auslegerarme von Tragsaeulen
US2692748A (en) * 1950-02-16 1954-10-26 Anderson Ralph Andrew Adjutable support

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE130366C (de) *
CH49553A (de) * 1910-10-18 1911-03-01 Heinrich Girsberger Vorrichtung an Stühlen zum Einstellen des Sitzes in verschiedenen Höhenlagen
CH136003A (de) * 1929-04-26 1929-10-31 Embru Werke Ag Möbel mit Vorrichtung zum Verstellen eines Teils desselben in der Höhe.
FR1116954A (fr) * 1954-12-20 1956-05-15 Perfectionnement aux sièges réglables

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1751152A (en) * 1929-03-06 1930-03-18 Evan C Harter Seat structure
DE582090C (de) * 1931-03-04 1933-08-08 Giorgio Miniati Kugelklemmgesperrartige Schnellbefestigung fuer Auslegerarme von Tragsaeulen
US2692748A (en) * 1950-02-16 1954-10-26 Anderson Ralph Andrew Adjutable support

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578384A (en) * 1968-11-25 1971-05-11 Mccord Corp Adjustable headrest for vehicle seats
US3642321A (en) * 1969-01-28 1972-02-15 Bernhard Schwarz Head and neck rest
DE2305928A1 (de) * 1973-02-07 1974-08-08 Kuerbi & Niggeloh Stativ
DE2355900A1 (de) * 1973-11-08 1975-05-15 Kuerbi & Niggeloh Stativ
US3993350A (en) * 1974-02-01 1976-11-23 Teleflex Morse Ltd. Seat arm adjustment mechanisms
US4278224A (en) * 1977-06-30 1981-07-14 Arakawa, Co. Ltd. Wedging action fixture
US4318526A (en) * 1978-09-13 1982-03-09 Werner Per G Adjustable telescopic device
US4360180A (en) * 1979-02-12 1982-11-23 Jeandal Device for locking the drawing board of a drawing table assembly
US4381095A (en) * 1980-10-14 1983-04-26 Mayline Co., Inc. Apparatus for supporting a work surface
US4636103A (en) * 1983-10-13 1987-01-13 Instro Precision Ltd. Locking mechanism
DE3338023A1 (de) * 1983-10-17 1985-04-25 No-Sag Drahtfedern Gmbh, 4835 Rietberg Kopfstuetze
US4614273A (en) * 1984-06-04 1986-09-30 Sugatsune Kogyo Co., Ltd. Free stop retainer
US4802198A (en) * 1985-04-01 1989-01-31 Siemens Aktiengesellschaft X-ray equipment support apparatus
US4807272A (en) * 1985-04-01 1989-02-21 Siemens Aktiengesellschaft X-ray equipment support apparatus
US5186429A (en) * 1991-09-26 1993-02-16 Kurt Linnepe Elongatable support
EP0663314A1 (de) * 1993-12-23 1995-07-19 Dunlop Cox Ltd Verriegelungsvorrichtung
US5617980A (en) * 1994-03-23 1997-04-08 Armament Systems And Procedures, Inc. Baton locking mechanism for expandable baton carriers
US5882077A (en) * 1996-01-10 1999-03-16 Sifa Sitzfabrik Gmbh Height adjustment of back rests
US5884969A (en) * 1996-01-10 1999-03-23 Sifa Sitzfabrik Gmbh Release for a height adjustment of back rests
US20040104611A1 (en) * 1998-01-21 2004-06-03 Caruso Jerome C. Adjustable armrest
US6877813B2 (en) * 1998-01-21 2005-04-12 Herman Miller, Inc. Adjustable armrest
US6354227B1 (en) 2000-01-11 2002-03-12 Steelcase Development Corporation Adjustable table with worksurface having write-on surface adapted for use as projection screen
US20090050279A1 (en) * 2007-08-24 2009-02-26 Seiko Epson Corporation Screen
EP2759230A1 (de) * 2013-01-23 2014-07-30 L & P Property Management Company Mechanismus zum Einstellen einer Stuhllehne und Stuhl
WO2014114629A1 (en) * 2013-01-23 2014-07-31 L&P Property Management Company Chair back height adjustment mechanism and chair
CN104185433A (zh) * 2013-01-23 2014-12-03 L&P财产管理公司 椅背高度调节机构和座椅
US20150366354A1 (en) * 2013-01-23 2015-12-24 L&P Property Management Company Chair back height adjustment mechanism and chair
US9782008B2 (en) * 2013-01-23 2017-10-10 L&P Property Management Company Chair back height adjustment mechanism and chair
US20140360319A1 (en) * 2013-06-07 2014-12-11 Chin-Tan Huang Hand tool
US9277820B2 (en) * 2014-04-30 2016-03-08 Wipro Limited Stabilizing mechanism for a shelf assembly
US10219966B2 (en) * 2016-12-09 2019-03-05 Kavo Dental Technologies, Llc Headrest adjustment system

Also Published As

Publication number Publication date
DE1753671B1 (de) 1971-08-26

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