US3761128A - Headrest for an ophthalmic chair or the like - Google Patents

Headrest for an ophthalmic chair or the like Download PDF

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Publication number
US3761128A
US3761128A US00288196A US3761128DA US3761128A US 3761128 A US3761128 A US 3761128A US 00288196 A US00288196 A US 00288196A US 3761128D A US3761128D A US 3761128DA US 3761128 A US3761128 A US 3761128A
Authority
US
United States
Prior art keywords
link
bearings
locking
arm
shaft
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
US00288196A
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English (en)
Inventor
G Schenk
I Bosack
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.)
American Optical Corp
Leica Microsystems Inc
Original Assignee
American Optical Corp
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 American Optical Corp filed Critical American Optical Corp
Application granted granted Critical
Publication of US3761128A publication Critical patent/US3761128A/en
Assigned to WARNER LAMBERT TECHNOLOGIES, INC., A CORP OF TX. reassignment WARNER LAMBERT TECHNOLOGIES, INC., A CORP OF TX. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WARNER LAMBERT COMPANY
Assigned to WARNER LAMBERT COMPANY, A CORP. OF DEL. reassignment WARNER LAMBERT COMPANY, A CORP. OF DEL. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: AMERICAN OPTICAL CORPORATION,
Assigned to CAMBRIDGE INSTRUMENTS INC., A DE CORP. reassignment CAMBRIDGE INSTRUMENTS INC., A DE CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WARNER LAMBERT TECHNOLOGIES, INC.
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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/38—Support for the head or the back for the head
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/10—Parts, details or accessories
    • A61G15/12—Rests specially adapted therefor, e.g. for the head or feet
    • A61G15/125—Head-rests

Definitions

  • ABSTRACT A spring mounted linkage system adjustably supporting a headrest characterized by a single reciprocally movable knob uniquely capable of locking the headrest i various positons.
  • the present invention provides a bracket, link and arm support arrangement which is unique in the manner in which the various'parts are locked into position.
  • the arrangement allows for rapid and easy, yet accurate and positive positioning of the headrest in a plurality of positions.
  • FIG. 1 is a side elevation in partial section of a bracket, link and arm headrest construction according to this invention.
  • FIG. 2 is a top elevation of a portion of the arrange ment of FIG. 1 in partial section.
  • FIG. 3 is a partial section along the lineA-A of FIG. 1 indicating the internal cooperation between parts associated with a single control knob.
  • FIG. 4 is a fragmentary section of a group of the elements associated with'the control knob of FIG. 3.
  • the headrest 11 is attached to the arm 10 by a suitable pivot screw 20.
  • the screw 20 is spring loaded and easily adjusted in a conventional manner. 'As can be seen by reference to FIG. 5, a spring loaded support 21 has a central annular aperture through which extends the screw 20 to threadilyengage the annular nut member 22.
  • a spring washer 23 assures friction.
  • the link 12 is hollow in that a pairof substantially identical shafts 25 and 25' are arrangedfor reciprocal axial movement through the respective axial passages 26 and 26' against the splined bearings 13 and 14. Those end portions of the shafts 25 and 25 bearing against the splined bearings 13 and 14 As shown in FIG. 2, the spring 30' is fastened to the body of the link 12 by the screw .35 and its other end by the screw 37 to the shaft 25. Note the screw 37 is able to reciprocally move axially of the link 12 in the groove 40.
  • connecting member or link 12 contains a knob 51 the complimentary splines which extend axially about the outer peripheral surface of the bearings 13 and 14.
  • knob 51 As knob 51 is threaded outwardly or retracted, the springs 30 and 30 pull the shafts 25 and 25' together along the opposed surfaces of the truncated conical cam member 50. This'allows both bearings and associated element 10 to rotate freely to move the arrangement as shown, for example to the dotted or dashed line position 100. Rotating the knob 51 in the opposite direction causes the conical base of cam member 50 to force apart the opposed shafts 25 and 25 into locking association with the bearings 13 and 14.
  • a screw 75 (see FIG. 3) interconnects the member 50 with a threaded shaft 53 through-an oversized aperture 76. This allows the taper of the member 50 to take up variation in the lengthsof the shafts 25 and 25.
  • An adjustable headrest support linkage system of the bracket, link and arm type comprising: head support means carried adjacent one end of an elongated arm, the arm pivotally interconnected with an intermediate. link by a bearing, the bearing being fixed relative to the arm, thebearing pivotally associating an end portion of the arm with an intermediate link, there being a split shaft associated with the link and arranged to move axially thereof, an additional bearing pivotally associated with the other end of the link and with chair support structure, said additional bearing being fixed relative to the chair support structure, locking means carried by the link intermediate its ends in position to reciprocally move the split portions axially of the link so that opposed ends thereof are substantially coincidentally moved into association with the bearings, there being means on said opposed ends of the split shaft arranged for locking the bearings in position upon appropriate adjustment of the locking means.
  • said locking means is comprised of an externally accessible knob having depending therefroma threaded shaft arranged to mate with complementary threads in the link whereby the knob is moved into and out of engagement with said link, there being additional means depending axially from the threaded shaft, said additional means including cam surfaces arranged to cooperate with opposed ends of the split portions of the shaft whereby, upon threading and unthreading of the knob, the cam surfaces move the shaft portion into and out of locking association with the bearings.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Eye Examination Apparatus (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
US00288196A 1972-09-11 1972-09-11 Headrest for an ophthalmic chair or the like Expired - Lifetime US3761128A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US28819672A 1972-09-11 1972-09-11

Publications (1)

Publication Number Publication Date
US3761128A true US3761128A (en) 1973-09-25

Family

ID=23106150

Family Applications (1)

Application Number Title Priority Date Filing Date
US00288196A Expired - Lifetime US3761128A (en) 1972-09-11 1972-09-11 Headrest for an ophthalmic chair or the like

Country Status (8)

Country Link
US (1) US3761128A (xx)
JP (2) JPS4968589A (xx)
CA (1) CA981175A (xx)
CH (1) CH555178A (xx)
DD (1) DD104428A5 (xx)
DE (1) DE2326255A1 (xx)
FR (1) FR2199258A5 (xx)
GB (1) GB1439278A (xx)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885831A (en) * 1974-01-24 1975-05-27 Keith O Rasmussen Close-coupled articulating headrest
US4159093A (en) * 1978-05-26 1979-06-26 American Optical Corporation Adjustable support for a headrest
US5427436A (en) * 1994-05-26 1995-06-27 Lloyd; John T. Adjustable headrest
US6397414B1 (en) 2000-06-21 2002-06-04 John T. Lloyd Adjustable face rest
US20040195893A1 (en) * 2000-09-20 2004-10-07 Robert Clough Seat headrest
US20060033375A1 (en) * 2004-06-22 2006-02-16 Yu-Ling Wu Structure of a chair pillow
US20080078031A1 (en) * 2006-10-02 2008-04-03 Weinstein Samantha A Modular System for Patient Positioning During Medical Procedures
WO2008092792A1 (de) * 2007-02-02 2008-08-07 Sirona Dental Systems Gmbh Kopfstützenanordnung
US20080258532A1 (en) * 2007-04-17 2008-10-23 Terry Cassaday Headrest Linkage
US20090001799A1 (en) * 2007-06-29 2009-01-01 Diller Mark G Procedure chair with interchangeable headrests
US7549704B1 (en) * 2008-02-20 2009-06-23 Kuo-Ching Chou Headrest adjusting structure for a seat
US20090200851A1 (en) * 2008-02-13 2009-08-13 Werner Link Head and/or neck support
US20100201176A1 (en) * 2009-02-11 2010-08-12 Dental Equipment, Llc, Dba Pelton & Crane Biarticulated headrest for chair
US8635725B2 (en) 2008-10-28 2014-01-28 Tony Y. Tannoury Prone and laterally angled surgical device and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932343A1 (de) * 1979-08-09 1981-02-26 Ritter Ag Kopfstuetze fuer einen behandlungsstuhl
JPH034263Y2 (xx) * 1987-09-28 1991-02-04

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672917A (en) * 1950-05-19 1954-03-23 American Optical Corp Adjustable chair
FR1334460A (fr) * 1962-06-27 1963-08-09 Perfectionnements aux repose-tête adaptables sur des fauteuils ou autres dispositifs utilisés, en particulier, dans l'art dentaire, médical ou chirurgical
US3572835A (en) * 1968-10-23 1971-03-30 Kees Surgical Specialty Co Surgical head rest

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS512348Y2 (xx) * 1971-04-20 1976-01-23
JPH03497U (xx) * 1989-05-26 1991-01-07

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672917A (en) * 1950-05-19 1954-03-23 American Optical Corp Adjustable chair
FR1334460A (fr) * 1962-06-27 1963-08-09 Perfectionnements aux repose-tête adaptables sur des fauteuils ou autres dispositifs utilisés, en particulier, dans l'art dentaire, médical ou chirurgical
US3572835A (en) * 1968-10-23 1971-03-30 Kees Surgical Specialty Co Surgical head rest

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885831A (en) * 1974-01-24 1975-05-27 Keith O Rasmussen Close-coupled articulating headrest
US4159093A (en) * 1978-05-26 1979-06-26 American Optical Corporation Adjustable support for a headrest
US5427436A (en) * 1994-05-26 1995-06-27 Lloyd; John T. Adjustable headrest
US6397414B1 (en) 2000-06-21 2002-06-04 John T. Lloyd Adjustable face rest
US20040195893A1 (en) * 2000-09-20 2004-10-07 Robert Clough Seat headrest
US7040705B2 (en) * 2000-09-20 2006-05-09 Robert Clough Seat headrest
US20060033375A1 (en) * 2004-06-22 2006-02-16 Yu-Ling Wu Structure of a chair pillow
US7055909B2 (en) * 2004-06-22 2006-06-06 Comfordy Co., Ltd. Structure of a chair pillow
US20080078031A1 (en) * 2006-10-02 2008-04-03 Weinstein Samantha A Modular System for Patient Positioning During Medical Procedures
EP1946727A2 (en) * 2006-10-02 2008-07-23 Allen Medical Systems, Inc. Modular system for patient positioning during medical procedures
US8413660B2 (en) 2006-10-02 2013-04-09 Allen Medical Systems, Inc. Modular system for patient positioning during medical procedures
US8037884B2 (en) 2006-10-02 2011-10-18 Allen Medical Systems, Inc. Modular system for patient positioning during medical procedures
EP1946727A3 (en) * 2006-10-02 2009-09-02 Allen Medical Systems, Inc. Modular system for patient positioning during medical procedures
WO2008092792A1 (de) * 2007-02-02 2008-08-07 Sirona Dental Systems Gmbh Kopfstützenanordnung
US20080258532A1 (en) * 2007-04-17 2008-10-23 Terry Cassaday Headrest Linkage
US7832803B2 (en) * 2007-04-17 2010-11-16 Terry Cassaday Headrest linkage
US20090001799A1 (en) * 2007-06-29 2009-01-01 Diller Mark G Procedure chair with interchangeable headrests
US8641147B2 (en) * 2007-06-29 2014-02-04 Midmark Corporation Procedure chair with interchangeable headrests
US7914079B2 (en) 2008-02-13 2011-03-29 Interstuhl Bueromoebel Gmbh & Co. Kg Head and/or neck support
US20090200851A1 (en) * 2008-02-13 2009-08-13 Werner Link Head and/or neck support
US7549704B1 (en) * 2008-02-20 2009-06-23 Kuo-Ching Chou Headrest adjusting structure for a seat
US8635725B2 (en) 2008-10-28 2014-01-28 Tony Y. Tannoury Prone and laterally angled surgical device and method
US20100201176A1 (en) * 2009-02-11 2010-08-12 Dental Equipment, Llc, Dba Pelton & Crane Biarticulated headrest for chair
US7871130B2 (en) * 2009-02-11 2011-01-18 Dental Equipment, Llc Biarticulated headrest for chair

Also Published As

Publication number Publication date
FR2199258A5 (xx) 1974-04-05
DD104428A5 (xx) 1974-03-12
GB1439278A (en) 1976-06-16
JPS4968589A (xx) 1974-07-03
JPS5748925U (xx) 1982-03-19
DE2326255A1 (de) 1974-03-21
CA981175A (en) 1976-01-06
CH555178A (de) 1974-10-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WARNER LAMBERT TECHNOLOGIES, INC.; 6373 STEMMONS F

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WARNER LAMBERT COMPANY;REEL/FRAME:004034/0700

Effective date: 19820514

Owner name: WARNER LAMBERT COMPANY, 201 TABOR ROAD, MORRIS PLA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN OPTICAL CORPORATION,;REEL/FRAME:004034/0681

Effective date: 19820513

AS Assignment

Owner name: CAMBRIDGE INSTRUMENTS INC., A DE CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WARNER LAMBERT TECHNOLOGIES, INC.;REEL/FRAME:004893/0097

Effective date: 19880407