US3823979A - Dental chair - Google Patents
Dental chair Download PDFInfo
- Publication number
- US3823979A US3823979A US00322756A US32275673A US3823979A US 3823979 A US3823979 A US 3823979A US 00322756 A US00322756 A US 00322756A US 32275673 A US32275673 A US 32275673A US 3823979 A US3823979 A US 3823979A
- Authority
- US
- United States
- Prior art keywords
- secured
- lever element
- clevis
- chair
- dental chair
- 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
Links
Images
Classifications
-
- 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
- A61G15/02—Chairs with means to adjust position of patient; Controls therefor
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
- A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
- A47C1/0242—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by electric motors
-
- 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
- A61G2203/00—General characteristics of devices
- A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
- A61G2203/72—General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention
- A61G2203/726—General characteristics of devices with special adaptations, e.g. for safety or comfort for collision prevention for automatic deactivation, e.g. deactivation of actuators or motors
Definitions
- the forward end of the clevis element is secured to a sleeve which is threaded onto the screw shaft of an electric motor for longitudinal movement thereon. Movement of the sleeve by the screw shaft causes the clevis element to act upon the lower end of the lever'element thereby causing the lever element and the back portion to pivot. about the pivotal connection of the lever element and the seat portion.
- This invention relates to dental chairs and more particularly to the means for pivoting the back portion of the dental chair with respect to the seat portion.
- the seat backs of conventional dental chairs are comprised of a heavy frame which surrounds the seat back.
- the heavy frame is ordinarily constructed of cast metal and is extremely expensive.
- the conventional dental chairs do not have a simple but efficient means for controlling the pivotal movement of the back portion of the dental chair with respect to the seat portion.
- a further object of the invention is to provide a dental chair having an electric motor associated therewith for pivotally moving the back portion of the chair.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dentistry (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00322756A US3823979A (en) | 1973-01-11 | 1973-01-11 | Dental chair |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00322756A US3823979A (en) | 1973-01-11 | 1973-01-11 | Dental chair |
Publications (1)
Publication Number | Publication Date |
---|---|
US3823979A true US3823979A (en) | 1974-07-16 |
Family
ID=23256265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00322756A Expired - Lifetime US3823979A (en) | 1973-01-11 | 1973-01-11 | Dental chair |
Country Status (1)
Country | Link |
---|---|
US (1) | US3823979A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4802683A (en) * | 1986-11-13 | 1989-02-07 | Gillum Sr J T | Wheelchair width reducing attachment |
US5214360A (en) * | 1992-03-13 | 1993-05-25 | Den-Tal-Ez, Inc. | Programmable adjustable chair for medical and dental applications |
US6406294B1 (en) | 1999-11-24 | 2002-06-18 | Bell Dental Products, Llc | Self contained dental chair with integrated compressor and vacuum pump and methods |
US7708344B1 (en) | 2008-10-31 | 2010-05-04 | Midmark Corporation | Patient chair with locking assembly |
WO2010051084A1 (en) * | 2008-10-31 | 2010-05-06 | Midmark Corporation | Device with a limit switch and trunnion |
US20100109405A1 (en) * | 2008-10-31 | 2010-05-06 | Midmark Corporation | Dental Chair |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3381997A (en) * | 1966-09-06 | 1968-05-07 | Edward E. Fritz | Adjustable chair |
US3578379A (en) * | 1967-12-28 | 1971-05-11 | Pennwalt Corp | Adjustable chair |
US3588170A (en) * | 1969-07-03 | 1971-06-28 | La Z Boy Chair Co | Motor-operated reclining chair |
US3596982A (en) * | 1969-05-15 | 1971-08-03 | Surgical Mechanical Research I | Patient{3 s chair |
US3719391A (en) * | 1970-04-17 | 1973-03-06 | V Neri | Chair for use in dentistry |
-
1973
- 1973-01-11 US US00322756A patent/US3823979A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3381997A (en) * | 1966-09-06 | 1968-05-07 | Edward E. Fritz | Adjustable chair |
US3578379A (en) * | 1967-12-28 | 1971-05-11 | Pennwalt Corp | Adjustable chair |
US3596982A (en) * | 1969-05-15 | 1971-08-03 | Surgical Mechanical Research I | Patient{3 s chair |
US3588170A (en) * | 1969-07-03 | 1971-06-28 | La Z Boy Chair Co | Motor-operated reclining chair |
US3719391A (en) * | 1970-04-17 | 1973-03-06 | V Neri | Chair for use in dentistry |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4802683A (en) * | 1986-11-13 | 1989-02-07 | Gillum Sr J T | Wheelchair width reducing attachment |
US5214360A (en) * | 1992-03-13 | 1993-05-25 | Den-Tal-Ez, Inc. | Programmable adjustable chair for medical and dental applications |
US6406294B1 (en) | 1999-11-24 | 2002-06-18 | Bell Dental Products, Llc | Self contained dental chair with integrated compressor and vacuum pump and methods |
US7708344B1 (en) | 2008-10-31 | 2010-05-04 | Midmark Corporation | Patient chair with locking assembly |
WO2010051084A1 (en) * | 2008-10-31 | 2010-05-06 | Midmark Corporation | Device with a limit switch and trunnion |
US20100109410A1 (en) * | 2008-10-31 | 2010-05-06 | Midmark Corporation | Patient Chair With Locking Assembly |
US20100109405A1 (en) * | 2008-10-31 | 2010-05-06 | Midmark Corporation | Dental Chair |
US20100109407A1 (en) * | 2008-10-31 | 2010-05-06 | Midmark Corporation | Device With A Limit Switch And Trunnion |
US7914076B2 (en) * | 2008-10-31 | 2011-03-29 | Midmark Corporation | Device with a limit switch and trunnion |
US8025336B2 (en) | 2008-10-31 | 2011-09-27 | Midmark Corporation | Dental chair |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3493264A (en) | T-cushion rocker/reclining chair | |
GB856398A (en) | Multiple-position reclining chair | |
US3823979A (en) | Dental chair | |
US3622198A (en) | Rocker/recliner chair | |
US3652125A (en) | Reclining chair | |
US2884992A (en) | Reclining chair headrest constructions | |
US3102753A (en) | Multiple position reclining chair with extendible head-rest | |
US2579502A (en) | Reclining article of furniture | |
US2778408A (en) | Reclining chair | |
GB788410A (en) | Improvements in or relating to reclining chairs | |
US3433527A (en) | Reclining mechanism for t-cushion chair | |
GB1161464A (en) | Torsion Bar Chair Control | |
US3244449A (en) | Reclining chair mechanism | |
US2989341A (en) | Head-rest and control | |
US3056629A (en) | Reclining chair of the multiple position type | |
US2879833A (en) | Adjustable chairs | |
US2613727A (en) | Reclining article of furniture | |
US3132894A (en) | Recliner chair of the multiple position type incorporating improved head-rest control | |
US3522969A (en) | T-cushion reclining chair | |
US2966939A (en) | Leg-rest and leg-rest control means for reclining chair | |
US2449498A (en) | Child's toilet seat | |
US3087754A (en) | Reclining chair of the multiple position type | |
ES224882U (en) | Perfected lever regulator mechanism for folding armchairs. (Machine-translation by Google Translate, not legally binding) | |
CA2235952A1 (en) | A reclinable outdoor chair | |
US4025113A (en) | Linkage mechanism for handle operated recliner chair |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DEN-TAL-EZ DENTAL PRODUCTS CORP., 1900 RITTENHOUSE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SYNTEX (U.S.A.) INC.;REEL/FRAME:004671/0857 Effective date: 19861010 Owner name: DEN-TAL-EZ DENTAL PRODUCTS CORP., A CORP. OF PA.,P Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SYNTEX (U.S.A.) INC.;REEL/FRAME:004671/0857 Effective date: 19861010 |
|
AS | Assignment |
Owner name: MERIDIAN BANK, 5 PENN CENTER PLAZA, PHILADELPHIA, Free format text: SECURITY INTEREST;ASSIGNOR:DEN-TAL-EZ DENTAL PRODUCTS CORP.;REEL/FRAME:004826/0156 Effective date: 19861020 Owner name: DEN-TAL-EZ, INC. Free format text: SECURITY INTEREST;ASSIGNOR:DEN-TAL-EZ DENTAL PRODUCTS CORP.;REEL/FRAME:004826/0171 Effective date: 19861020 Owner name: MERIDIAN BANK,PENNSYLVANIA Free format text: SECURITY INTEREST;ASSIGNOR:DEN-TAL-EZ DENTAL PRODUCTS CORP.;REEL/FRAME:004826/0156 Effective date: 19861020 |
|
AS | Assignment |
Owner name: DENTAL-EZ, INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST AS OF JANUARY 26, 1990;ASSIGNORS:DOMINION BANK OF MARYLAND, N.A.;JEFFERSON BANK;DOMINION BANK, N.A.;REEL/FRAME:005919/0959;SIGNING DATES FROM 19910429 TO 19911112 |