US3740852A - Holder assembly for dental tools - Google Patents

Holder assembly for dental tools Download PDF

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Publication number
US3740852A
US3740852A US00070039A US3740852DA US3740852A US 3740852 A US3740852 A US 3740852A US 00070039 A US00070039 A US 00070039A US 3740852D A US3740852D A US 3740852DA US 3740852 A US3740852 A US 3740852A
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United States
Prior art keywords
support members
holder assembly
counterbalancing
support member
support
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
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US00070039A
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English (en)
Inventor
J Holmqvist
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.)
TOMELILLA DENTAL AB
Original Assignee
TOMELILLA DENTAL AB
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Publication date
Application filed by TOMELILLA DENTAL AB filed Critical TOMELILLA DENTAL AB
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Publication of US3740852A publication Critical patent/US3740852A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • A61G15/14—Dental work stands; Accessories therefor
    • A61G15/16—Storage, holding or carrying means for dental handpieces or the like

Definitions

  • This invention relates to a holder assembly for dental tools, such as dental engines, air and water syringes etc., which are fed through elongate flexible connections each drawn up to the holder assembly.
  • elongate flexible connections as used herein is meant to cover air and water hoses, power supply cords, etc.
  • the use of the equipment is facilitated if the dental tools in question are of low weight, easy to grasp and provided with light-weight hoses or flexible cords.
  • the hoses hang freely between the compressor and/or pump unit and the tool used. It is also known to load the hoses with weights and to let them run over rollers for retraction; If the dental engines and the syringes are disposed .on a holder assembly the freely hanging hoses are dispensed with, and the relatively short hose lengths can be wound onto a number of reels built into the assembly.
  • the dental engines and syringes are not in use the hoses are kept stored in the assembly, the tools being usually placed in the insertion holes of the hoses.
  • FIG. 1 is a perspective view of a first embodiment of a holder assembly as seen from the rear;
  • FIG. 2 is a perspective view, as seen obliquely from in front, of the main constituents of the holder assembly in a partly exploded state;
  • FIG. 3 is a side view, partly in section, of a second embodiment of the holder assembly.
  • a baseplate 1 has two upstanding side members 2 for supporting' a shaft 3.
  • Two support members 4 and an interjacent balancing-member 5 are disposed on said shaft 3,
  • Each support member 4 consists of a body portion 6 and a rigid tube 7 protruding therefrom, through which passes a hose or cord 9 leading to a tool, such as a handpiece 8, and anchored at the outer end of the tube by means of an elastic sleeve 7, said hose or cord 9 extending approximately diametrically through the body portion 6 and from there to a source (not shown) of electric power, air, water or the like.
  • the body portions 6 and the balancing member '5 are mounted on the shaft 3' by means of ball bearings 10 to eliminate friction.
  • FIG. 1 the tubes 7 are shown in position of readiness, i.e. inclined against a rod 11 interconnecting the side members 2.
  • the counterbalancing described hereinbelow takes place only when the support member 4 by means of a pull at the handpiece 8 and consequently the hose or cord 9 has been turned upwardly through an angle a to a position immediately before the tube 7 reaches vertical position. In this angular range the support member 4 is not counterbalanced.
  • the support spring is disadvantageous first of all because movements of the tool readily give rise to oscillations of the spring, which results in jerks at the hose or cord.
  • Another disadvantage is that it is not possible to attain the desired total counterbalancing of the weight of the hoses or cords. Also, a relatively small working range only may be counterbalanced by means of said spring.
  • This holder assembly is characterized in that a protruding rigid support member for supporting the hose or cord length is rotatably mounted on a shaft of the holder assembly and via a laterally protruding pin or rib engages biasing means generating a force the size of pull at the handpiece'B the support member 4 is swung further through an angular working range B in which the weight of the support member 4 and that of the hose or cord length 9 are completely balanced.
  • the balancing member 5 which is provided at the lower portion with an adjustable counterweight 12 for counterbalancing the weight of the support member 4 and the hose or cord length 9 is provided in its surface facing the support member 4 with a channel 13 in which a pin 14 protruding laterally from the support member 4 is caused to engage.
  • the pin 14 Upon rotation of the support member 4 in the direction indicated by the arrow 15 from the position of readiness the pin 14 initially moves freely in the channel'l3, but at the beginning of the angular working range B it will engage one end 16 of the channel, thereby carrying the balancing member 5 along so that the support member 4 and the hose-or cord length 9 are completely counterbalanced.
  • a balancing member 5 cooperates with two support members 4, which implies that measures must be taken to prevent rotation of one support member from the position of readiness when the other support member is utilized and counterbalanced. This is realized by the channel 13 being extended rearwardly in the direction away from the end 16 so that the pin 14 of the support member which is at rest is not acted upon by the balancing member at the rotation thereof.
  • one balancing member 5 could be provided for each supporting member, in which case the channel 13 need not have the rearward extension described in the foregoing.
  • two support members cooperate in the manner shown with one balancing member. It would also be possible to have more than two support members cooperate with one balancing member, but such an arrangement would be complex in structural respect.
  • the hose or cord supporting portion of the support member is a tube 7, and the hose 9 extends through said tube 7 and the support member 4.
  • the hose 9 extends through said tube 7 and the support member 4.
  • other possibilities of running the hose 9 are conceivable as long as the protruding portion of the support member is substantially rigid and counterbalanced in the manner described hereinbefore.
  • the holder assembly could also be provided with rest means for holding the tools in inoperative position.
  • said rest means is a magnet 17 which as shown can be formed as an elongate horseshoe magnet-
  • the tools are not ferromagnetic thin strips or like means of such material may be attached thereto.
  • the advantage of having the rest means for holding the tools in an inoperative position designed as a magnet is on the one hand that the operator can replace the tool on the holder assembly withou'r raising his eyes from the work he is doing, and on the other hand that the rest means need not be sterile. Should it nevertheless be desired to keep it sterile a thin exchangeable plastic film or the like is readily applicable to the magnet.
  • FIG. 3 Another embodiment of the holder assembly according to the invention is shown in FIG. 3 where the biasing means is a spring instead of a balancing member with a counterweight ln FIG. 3 the parts having their counterpart in the embodiment shown in FIGS. 1 and 2 carry the same reference numerals as in said Figures.
  • the support member 4 including the tube 7 for receiving a hose or cord is rotatable about the shaft 3 as in the earlier embodiment.
  • the support member 4 is provided with a laterally protruding rib 18 corresponding to the pin 14 and adapted to cooperate with a helical spring 19 which is fixed in relation to the shaft 3 of the holder assembly and has a free end20.
  • This spring 19 is arranged on a detail (not shown) which may be said to correspond to the balancing member 5 but is fixed in relation to the shaft 3; the spring is secured to a pin 21 on said detail which in turn may constitute the fastening means of the entire holder assembly.
  • the spring 19 is so dimensioned and mounted as to get in contact with the rib 18 only after the support member has been rotated through an angle a from the position of readiness defined by the rod 11.
  • the support member and the weight of the hose or cord disposed thereon are counterbalanced by the coaction between the rib 18 and the end 20 of the spring 19.
  • the spring end 20 slides against the rib 18 the spring will develop a progressively greater counterforce, which is required for a correct counterbalancing since the weight of the hose or cord will have an ever larger lever arm with respect to the shaft upon outward rotation of the support member 4 with the tube 7 thereof.
  • biasing means illustrated counterweight and spring
  • some equivalent biasing means such as magnet means, pneumatic means or like means.
  • the holder assembly should preferably be provided with an aesthetically pleasing housing.
  • a holder assembly for at least two dental tools comprising base means, holding means on said base means for holding dental hand pieces on said base means, shaft means mounted on said base means, at least two rigid support members rotatably mounted on said shaft means, each of said support members having an opening on its upper portion and a protrusion on its side portion, rigid tube means mounted in each of said openings of said support members, at least one adjustable counterweight means rotatably mounted on said shaft means for counterbalancing said counterweight means having a channel wherein said protrusion is seated, said channel extending rearward of the direction of rotation of said support members so as to permit initial free rotation of said support members and engagement of the walls of said channel only at beginning of counterbalancing activity and counterbalancing only the support members working, and flexible tubes whereby the connection of the hand pieces to a power source is carried through the openings in said support members, the rigid tube means and the flexible tubes.
  • a holder assembly for two dental tools comprising base means, holding means on said base means for holding dental hand pieces on said base means, shaft each of said protrusions are seated so as to permit free rotation of each of said support members before the counterbalancing begins and to counterbalance only the support member working, and flexible tubes mounted on each of said rigid tubes whereby the connection of the hand pieces to a power source is carried through the openings in said support members, the

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
US00070039A 1969-09-09 1970-09-08 Holder assembly for dental tools Expired - Lifetime US3740852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE12397/69A SE325989B (nl) 1969-09-09 1969-09-09

Publications (1)

Publication Number Publication Date
US3740852A true US3740852A (en) 1973-06-26

Family

ID=20295675

Family Applications (1)

Application Number Title Priority Date Filing Date
US00070039A Expired - Lifetime US3740852A (en) 1969-09-09 1970-09-08 Holder assembly for dental tools

Country Status (4)

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US (1) US3740852A (nl)
DE (1) DE2044424B2 (nl)
GB (1) GB1301864A (nl)
SE (1) SE325989B (nl)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982322A (en) * 1974-09-12 1976-09-28 Siemens Aktiengesellschaft Arrangement for the switching on-and-off of a pressurized medium flow
US4345616A (en) * 1980-03-17 1982-08-24 Terry Paul V Retractor for hose-connected hand pieces
US5158453A (en) * 1992-02-12 1992-10-27 Knight Manufacturing Inc. Apparatus for supporting and controlling fluid delivery to a dental handpiece
US5297961A (en) * 1993-04-20 1994-03-29 Mdt Corporation Dental control unit with articulated whip arms
EP2086447A1 (en) * 2006-11-21 2009-08-12 Planmeca Oy Arrangement for adjusting the bending resistance of an instrument arm
US20100129769A1 (en) * 2008-11-23 2010-05-27 Nilton Albano Junge Dental Delivery System
US20200337930A1 (en) * 2017-11-17 2020-10-29 Takara Belmont Corporation Moving device for rod part supporting instrument hose and dental examination-and-treatment apparatus including moving device for rod part supporting instrument hose
US11602477B2 (en) * 2017-11-17 2023-03-14 Takara Belmont Corporation Instrument hose support device and dental treatment apparatus including the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2849035A1 (de) * 1978-11-11 1980-05-22 Ritter Ag Zahnaerztliches behandlungsgeraet

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982322A (en) * 1974-09-12 1976-09-28 Siemens Aktiengesellschaft Arrangement for the switching on-and-off of a pressurized medium flow
US4345616A (en) * 1980-03-17 1982-08-24 Terry Paul V Retractor for hose-connected hand pieces
US5158453A (en) * 1992-02-12 1992-10-27 Knight Manufacturing Inc. Apparatus for supporting and controlling fluid delivery to a dental handpiece
US5297961A (en) * 1993-04-20 1994-03-29 Mdt Corporation Dental control unit with articulated whip arms
EP2086447A1 (en) * 2006-11-21 2009-08-12 Planmeca Oy Arrangement for adjusting the bending resistance of an instrument arm
EP2086447A4 (en) * 2006-11-21 2014-04-09 Planmeca Oy ARRANGEMENT FOR ADJUSTING THE BENDING RESISTANCE OF AN INSTRUMENT ARM
US20100129769A1 (en) * 2008-11-23 2010-05-27 Nilton Albano Junge Dental Delivery System
US20200337930A1 (en) * 2017-11-17 2020-10-29 Takara Belmont Corporation Moving device for rod part supporting instrument hose and dental examination-and-treatment apparatus including moving device for rod part supporting instrument hose
US11602477B2 (en) * 2017-11-17 2023-03-14 Takara Belmont Corporation Instrument hose support device and dental treatment apparatus including the same
US12070427B2 (en) * 2017-11-17 2024-08-27 Takara Belmont Corporation Moving device for rod part supporting instrument hose and dental examination-and-treatment apparatus including moving device for rod part supporting instrument hose

Also Published As

Publication number Publication date
GB1301864A (nl) 1973-01-04
SE325989B (nl) 1970-07-13
DE2044424B2 (de) 1978-11-30
DE2044424A1 (de) 1971-04-29

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