GB225214A - Improvements in or relating to dental chairs and the like - Google Patents

Improvements in or relating to dental chairs and the like

Info

Publication number
GB225214A
GB225214A GB2755824A GB2755824A GB225214A GB 225214 A GB225214 A GB 225214A GB 2755824 A GB2755824 A GB 2755824A GB 2755824 A GB2755824 A GB 2755824A GB 225214 A GB225214 A GB 225214A
Authority
GB
United Kingdom
Prior art keywords
parts
screw
sleeve
dental
motor
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
Application number
GB2755824A
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.)
RITTER DENTAL Manufacturing Co Inc
Original Assignee
RITTER DENTAL Manufacturing 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
Priority to US675963A priority Critical patent/US1708450A/en
Application filed by RITTER DENTAL Manufacturing Co Inc filed Critical RITTER DENTAL Manufacturing Co Inc
Publication of GB225214A publication Critical patent/GB225214A/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G15/00Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/02Chairs with means to adjust position of patient; Controls therefor
    • 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
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18568Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18576Reciprocating or oscillating to or from alternating rotary including screw and nut
    • Y10T74/18656Carriage surrounded, guided, and primarily supported by member other than screw [e.g., linear guide, etc.]
    • 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
    • Y10T74/00Machine element or mechanism
    • Y10T74/18Mechanical movements
    • Y10T74/18568Reciprocating or oscillating to or from alternating rotary
    • Y10T74/18576Reciprocating or oscillating to or from alternating rotary including screw and nut
    • Y10T74/18672Plural screws in series [e.g., telescoping, etc.]

Abstract

225,214. Ritter Dental Manufacturing Co., Inc., (Assignees of May, A. J.). Nov. 20, 1923, [Convention date]. Screw - and - nut mechanism. - Means for vertically adjusting the seat member of a dental or like chair, comprise a base 23, an intermediate portion 25 and an upper seat-carrying member 29, the screw and nut connection 36, 38 between the parts 23, 25 and the screw and nut connection 50, 47 between the parts 29, 25 being interconnected by the rotatable sleeve 42 so that when the pinion 37 is driven the part 25 moves vertically relatively to the base 23, and the member 29 moves vertically relatively to the intermediate portion 25. The telescoping parts may be guided in their motion by rollers 24, 27 while the sleeve 42 is caused to rotate with the screw 36 by rollers 44 on the latter engaging a slot 46 in the sleeve. Balls 52 are provided between the parts 50, 47 and 36, 38, continuous circulation thereof being provided for by means of the vertical channel 53 and guiding finger 54. The adjusting means are preferably driven by a reversible electric motor 63, actuated by pedals 78, 79, pins 90 operating switch arms 84 to limit the range of movement. A worm drive is preferably introduced between the motor and the chair to lock the adjusted parts in position when the motor is stationary.
GB2755824A 1923-11-20 1924-11-18 Improvements in or relating to dental chairs and the like Expired GB225214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US675963A US1708450A (en) 1923-11-20 1923-11-20 Dental chair

Publications (1)

Publication Number Publication Date
GB225214A true GB225214A (en) 1926-03-18

Family

ID=24712648

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2755824A Expired GB225214A (en) 1923-11-20 1924-11-18 Improvements in or relating to dental chairs and the like

Country Status (3)

Country Link
US (1) US1708450A (en)
DE (1) DE435433C (en)
GB (1) GB225214A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295621A (en) * 1963-04-25 1967-01-03 Dentists Supply Co Supporting base for chair and the like for gliding on a film of air
US4842233A (en) * 1987-11-12 1989-06-27 Dexta Corporation Lifting mechanism

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2215666A (en) * 1937-02-04 1940-09-24 Oscar H Pieper Extensible chair
US2655305A (en) * 1947-10-30 1953-10-13 Gen Package Corp Egg carton
DE850507C (en) * 1950-11-09 1952-09-25 Georg Dr Dr Schwalbe Support device for knee-elbow skull position
US2989280A (en) * 1957-12-03 1961-06-20 Emil J Paidar Company Electro-mechanical beauty chair
US3404581A (en) * 1967-04-18 1968-10-08 Sargent Industries Ball screw actuator
US3404580A (en) * 1967-04-18 1968-10-08 Sargent Industries Ball screw actuator
DE2251808C3 (en) * 1972-10-21 1984-09-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
CH664434A5 (en) * 1984-02-20 1988-02-29 Magnetic Elektromotoren Ag Telescopic column with electric motor drive and furniture with the telescopic column as a foot.
WO2001073340A1 (en) * 2000-03-31 2001-10-04 Larsen Joergen A telescopical device
AU6008601A (en) * 2000-05-22 2001-12-03 Ideassociates Ltd Telescopically moving structure
FR2917788B1 (en) * 2007-06-19 2009-07-24 Aircelle Sa Double action actuator with program effect
GB0917693D0 (en) * 2009-10-09 2009-11-25 Goodrich Actuation Systems Ltd Actuator arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295621A (en) * 1963-04-25 1967-01-03 Dentists Supply Co Supporting base for chair and the like for gliding on a film of air
US4842233A (en) * 1987-11-12 1989-06-27 Dexta Corporation Lifting mechanism

Also Published As

Publication number Publication date
US1708450A (en) 1929-04-09
DE435433C (en) 1926-10-12

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