US3663772A - Foot control for switching of an electric drive - Google Patents

Foot control for switching of an electric drive Download PDF

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Publication number
US3663772A
US3663772A US62973A US3663772DA US3663772A US 3663772 A US3663772 A US 3663772A US 62973 A US62973 A US 62973A US 3663772D A US3663772D A US 3663772DA US 3663772 A US3663772 A US 3663772A
Authority
US
United States
Prior art keywords
shell section
foot control
mode
upper shell
lower shell
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
US62973A
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English (en)
Inventor
Ulrich Grabel
Peter Michaelis
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.)
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Original Assignee
Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
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 Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH filed Critical Grundig EMV Elektromechanische Versuchsanstalt Max Grundig GmbH
Application granted granted Critical
Publication of US3663772A publication Critical patent/US3663772A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/10—Manually-operated control; Solenoid-operated control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H01H13/16—Operating parts, e.g. push-button adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/26—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for operation by a part of the human body other than the hand, e.g. by foot
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20528—Foot operated

Definitions

  • ABSTRACT A foot control particularly for a dictating apparatus.
  • the electric drive of the dictating apparatus is to be switched between an inoperative mode, a forward mode and a reverse mode and the switching between these modes is to be sequential.
  • a housing includes an upwardly open lower shell section and a superimposed downwardly open shell section having two spaced marginal portions. The sections'are connected with bayonettype closures permitting the upper section to move upwardly and downwardly with reference to the lower section.
  • a leaf spring is located in the housing and has a first end portion fixed to the lower shell section and urges the upward shell section upwardly with its remote second end portion.
  • a spherical element is interposed between the second end portion and the upper shell sections so that the latter rocks about the spherical element with reference to the lower shell section when downward pressure is applied on one of two spaced marginal portions of the upper shell section. Pressure on one of these marginal portions causes the upper shell section to be rocked downwardly to a first position in which the drive is switched from inoperative to forward mode, and pressure on the other marginal portion causes the upper shell section to be rocked downwardly to a second position in which the drive is switched sequentially past the forward mode to a reverse mode.
  • the present invention relatesgenerally to a foot control, and more particularly to.a foot control for an electric drive. Still more particularly the invention relates to a foot control which is especially but not exclusively useful for controlling dictating apparatus and which serves for effecting sequential switching of an electric drive in dictating or other apparatus between an inoperative mode, a forward mode and a reverse mode.
  • the invention will hereafter be described with respect to its use in conjunction with a dictating apparatus, particularly a dictating apparatus utilizing magnetic tape. However, it is understood that its operation would be analogous where other drives in other devices are. to be controlled in thesame sense.
  • foot control In dictating apparatus it is usually desired to provide the foot control with switching means permitting the drive of the apparatus to be stopped entirely, permitting the drive of the apparatus to be switched to a forward mode of operation and permitting the drive of the apparatus to be switched to a temporary reverse or backspace mode of operation so that the user may briefly reverse the magnetic tape.
  • One known type of foot control for this purpose utilizes pressure variations wherein a single switch is depressed lightly to switch the drive from inoperative mode to forward mode, with a stronger pressure being required to switch the drive from forward mode to reverse mode of operation.
  • An additional object of the invention is to provide such an improved foot control which is easy to operate and is not tiring to the operator, and which also operates reliably and provides for a reliable error-free sequential selection of the desired operational modes of the drive which it controls.
  • a foot control particularly for use with a dictating machine, for effecting sequential shifting of an electric drive between an inoperative mode, a forward mode and a reverse mode
  • a housing including an upwardly open lower shell section and a superimposed downwardly upper shell section having two spaced marginal portions.
  • Connecting means connects the upper shell section to the lower shell section with limited freedom of movement towards and away from the latter.
  • a leaf spring is provided in the housing and has a first end portion fixed to the lower shell section and a free second end portion urging the upper shell section upwardly away from the lower shell section.
  • Rocker bearing means is interposed between the second end portion and the upper shell section so that the latter, in response to downward pressure on one of the marginal portions, rocks relative to the lower shell section to a first position in which the electric drive is switched from inoperative mode to forward mode andin response to downward pressure 'on the other of the marginal portions rocks to a second position in which the electric drive is switched passed the forward mode to reverse or backspace mode.
  • the rocker bearing means may be in form of an element interposed between the second end portion of the leaf spring and the upper shell section, and this element will have a roundish configuration, preferably but not necessarily a sphere.
  • the displacement in the position of the upper shell section takes place with reference to'the center of the upper shell section and as a result the foot control can be operated equally well from all sides, including the backside, that is the sidewhich normally faces away from the operator when the foot control is positioned on the ground ready for use.
  • FIG. 1 is a partly broken-away top-plan view of a foot control according to the present invention
  • FIG. 2 is a side-elevational section of the embodiment shown in FIG. 1, depicting the foot control in a position in which it controls the inoperative mode of the drive;
  • FIG. 3 is a view similar to FIG. 2 but depicting the foot control of FIG. 1 in a position in which it controls the drive for forward mode of operation;
  • FIG. 4 is a view also similar to FIG. 2 but depicting the foot control in a position in which it controls the drive for reverse mode of operation;
  • FIG. 5 is a view similar to FIG. 2 illustrating a further detail of the embodiment shown in FIG. 1;
  • FIG. 6 is a top-plan view of FIG. 5, lustrate the detail of FIG. 5 in top-plan view.
  • the housing is composed of two shell sections, a lower upwardly open shell section 2 and an upper superimposed downwardly open shell section 1. Located in the interior of the space or chamber thus enclosed partly broken away, to ilare two rocker switches 14 and 15 of known construction which are positioned in the manner illustrated in FIG. 1 in particular.
  • FIGS. 2-4 show most clearly, a shell-like insert 25 of preferably sheet metal-which may be formed by stampingis located in the interior of the upper shell section 1 and is at its outer side surrounded by a tightly fitting similarly configurated shell portion 29 of a suitable synthetic plastic material, preferably Caprolan (trademark) or on Caprolan basis.
  • the lower shell section 2 advantageously is composed of metal, for instance pressure-cast zinc or the like. Any recesses which are required (compare for instance FIGS. 1 and 2) are formed in the lower shell section 2 at the time the latter is shaped.
  • the shell sections 1 and 2 are connected by four bayonet-type connecting arrangements cooperating between the juxtaposed side walls 5 and 6 of the shell sections 1 and 2.
  • the upper shell section 1 is movable upwardly and downwardly with reference to the lower shell section 2 to the limited extent made possible by the bayonet-type connecting means or closures.
  • Each of these bayonet closures comprises, as the drawing clearly shows (par ticularly FIG. 1), a projecting male pin 3 provided on the inside of the upper shell section 1 and a corresponding or cooperating recess 4 provided on the lower shell section 2.
  • the configuration of the recesses 4 is such that the pin 3 is inserted into a throat 4' of the recess 4 when the upper shell section 1 is placed in superimposed relationship upon the lower shell section 2, whereupon the upper shell section 1 is pressed down and moved towards the left as seen in the drawing, so that the pin 3 then slides from the throat 4' into the main portion of the recess 4 as the upper shell section is lifted upwardly again.
  • This lifting occurs automatically as a result of the upwardly directed biasing action of a leaf spring 7 one end portion of which is connected to the lower shell section 2 by means of screws or similar connecting means 7a.
  • the other free end portion of the leaf spring 7 urges the upper shell section 1 upwardly away from the lower shell section 2.
  • a rocker bearing means here illustrated as a spherical element 8 is interposed between the free end portion of the leaf spring 7 and the upper shell section 1.
  • the free end portion of the leaf spring 7 is provided with a recess or aperture 9 in which the spherical element 8 is partly accommodated so as to be fixed in its position, and a similar recess or aperture 9' is provided in the shell-like portion 25 of the upper shell section 1.
  • the upper shell section 1 rocks or tumbles with reference to the lower shell section 2 when downward pressure is exerted on any one of its marginal portions, regardless of which one of them. This is true even if the pressure is exerted on the marginal portion at the back or reverse rear side of the upper shell section 1, that is the one which normally would face away from the operator and where the electrical conductor 21 enters the foot control.
  • Two slots 27 are provided in the lower shell section 2 at that side which would normally face the operator, and two projecting pins 26 of the portion 25 of the upper shell section 1 extend into these slots 27.
  • Two grooves 28 are provided at the side of the lower shell section 2 which is opposite the slots 27, and when the upper shell section 1 is placed upon the lower shell section 2, two arresting projections 23 of an arresting member 22 can pass into these grooves 28. This will be discussed in more detail subsequently.
  • the foot control is shown in FIG. 2 in a position in which the drive which it controls is in inoperative position.
  • this marginal portion is downwardly displaced with reference to the lower shell section 2 until the surface 17 of the upper shell section 1 abuts against an upper free edge 11 of the lower shell section 2; when this takes place, the switch 14 energizing the drive for forward operation has been actuated.
  • Pressure on an opposite marginal portion of the upper shell section 1 in the direction of the arrow 12 see FIG.
  • the-rather broad leaf spring 7 which advantageously consists of sheet steel, constitutes a lever which can be displaced stepwise and via which the two rocking switches 14 and l5which are of entirely conventional constructionare actuated. It is immaterial upon which marginal portion of the upper shell section 1 the pressure is exerted, because the upper shell section 1 will always be first displaced from the position shown in FIG. 2 through one stage to the position shown in FIG. 3 in which it energizes the switch 14. Only after abutment has taken place between the surface portions 11 and 17 will additional displacement to the second stage take place by further displacement of the upper shell section 1 to the position shown in FIG. 4, caused simply by a slight rocking of the foot of the operator.
  • the reverse mode switching is thereby terminated. If the foot is lifted further, thereby terminating pressure upon the edge 20 of the upper shell section 1, then this edge also snaps to the upper or rest position shown in FIG. 2 from the position in FIG. 3, and the switch 14 also returns to circuit-interrupting position, thereby switching the drive from forward mode to inoperative mode.
  • the desired switching sequence in operative mode, forward mode and reverse mode can be reliably maintained in sequence, both starting with inoperative mode and starting with reverse mode, which is to say that the sequence is maintained irrespective of whether the operation of the control begins with the drive in inoperative mode or whether it begins with the drive in reverse mode.
  • a longitudinally shiftable and preferably arrestable arresting member 22 is provided in the interior of the upper shell section 1. This is most clearly shown in FIGS. 5 and 6 where it will also be seen that the member 22 has two arresting projections 23.
  • a projection or bead 30 on the member 22 snaps into corresponding openings 31 in the portion 25 of the upper shell section 1 in the two end positions of the member 22.
  • This member 22 may be displaced from the broken-line open or arrest position to the full-line arresting position (see FIG. 6) in suitable manner, for instance by inserting a screw driver or similar member through a cut-out 24 in the lower shell section 2 and exerting a requisite force upon the member 22.
  • the projections 23 may abut against the adjacent outer side wall of the lower shell section 2 and thus prevent the opposite projection 26 of the upper shell section 1 from being withdrawn out of the slots 27 of the shell section 2.
  • the projections 26 can be withdrawn from the slots 27 because the projections 23 can in this position enter into the corresponding grooves 23 provided in the side wall of the lower shell section 2.
  • a foot control particularly for use with a dictating machine, for effecting sequential switching of an electric drive between an inoperative mode, a forward mode and a backspace mode, comprising a housing including an upwardly open lower shell section and a superimposed downwardly open upper shell section having two spaced marginal portions; connecting means configurated as bayonet couplings and connecting said upper shell section to said lower shell section with limited freedom of movement towards and away from the latter; a leaf spring in said housing and having a first end portion fixed to said lower shell section and a free second end portion urging said upper shell section upwardly away from said lower shell section; and rocker bearing means interposed between said second end portionand said upper shell section so that the latter, in response to downward pressure on one of said marginal portions, rock relative to said lower shell section to a first position in which said electric drive is switched from inoperative mode to forward mode, and in response to additional downward pressure on the other of said marginal portions rocks to a second position in which said electric drive is switched past said forward mode to said backspace mode.
  • rocker bearing means comprising a rocker bearing element of roundish configuration interposed between and in contact with said upper shell section and said second end portion of said leafspring.
  • said bayonetcouplings each comprising cooperating male and female connecting portions provided on said shell sections.
  • a foot control as defined in claim 8 said upper and lower shell sections having respective juxtaposed side walls, and said connecting portions being provided on said side walls.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Switches With Compound Operations (AREA)
  • Mechanical Control Devices (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US62973A 1969-08-21 1970-08-11 Foot control for switching of an electric drive Expired - Lifetime US3663772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691942495 DE1942495C2 (de) 1969-08-21 1969-08-21 Fusschalter fuer ein diktiergeraet insbesondere magnetton bandgeraet

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US3663772A true US3663772A (en) 1972-05-16

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US62973A Expired - Lifetime US3663772A (en) 1969-08-21 1970-08-11 Foot control for switching of an electric drive

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US (1) US3663772A (de)
AT (1) AT302682B (de)
DE (1) DE1942495C2 (de)
GB (1) GB1274573A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430605A (en) 1981-06-22 1984-02-07 The Singer Company Motor control system utilizing switched controller
US5422521A (en) * 1993-11-18 1995-06-06 Liebel-Flarsheim Co. Foot operated control system for a multi-function device
USD388056S (en) * 1995-09-29 1997-12-23 Liebel-Flarsheim Company Actuator for foot-operated control system
US5883615A (en) * 1995-09-29 1999-03-16 Liebel-Flarsheim Company Foot-operated control system for a multi-function
US6051797A (en) * 1997-10-01 2000-04-18 Siemens Aktiengesellschaft Foot pedal switch assembly for operating a medical diagnostic apparatus
US20050172405A1 (en) * 2002-09-06 2005-08-11 Menkedick Douglas J. Hospital bed
WO2006128630A1 (en) * 2005-05-30 2006-12-07 Erbe Elektromedizin Gmbh Foot switch for electromedical apparatus and method of manufacturing such a foot switch
US20070169271A1 (en) * 1995-01-03 2007-07-26 Allen E D Hospital bed and mattress having a retractable foot section
US8286282B2 (en) 1995-08-04 2012-10-16 Hill-Rom Services, Inc. Bed frame and mattress synchronous control
US9009893B2 (en) 1999-12-29 2015-04-21 Hill-Rom Services, Inc. Hospital bed
US9089459B2 (en) 2013-11-18 2015-07-28 Völker GmbH Person support apparatus
WO2018059960A1 (de) * 2016-09-30 2018-04-05 Ferton Holding S.A. Fusspedal zum steuern eines medizinischen geräts
US11419697B2 (en) * 2016-09-30 2022-08-23 Ferton Holding S.A. Foot pedal for wireless control of a medical device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408095A1 (de) * 1994-03-10 1995-09-14 Dieter Spaeth Handdiktiergerät

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1562803A (en) * 1921-12-02 1925-11-24 William I Stone Automobile signal device
US1679833A (en) * 1927-04-07 1928-08-07 Laugeson Earl Virgil Circuit closer for direction signals
US1830298A (en) * 1926-04-24 1931-11-03 Leonardo M Tartaglia Circuit closing device
US1853094A (en) * 1927-08-05 1932-04-12 Charles P Stewart Signaling apparatus
US2636092A (en) * 1950-03-16 1953-04-21 Gen Motors Corp Foot-operated direction signal switch
US3033946A (en) * 1960-04-06 1962-05-08 Gen Motors Corp Circuit controller
US3118123A (en) * 1962-02-26 1964-01-14 Singer Co Compressible resistance pile motor controller
US3467798A (en) * 1967-11-17 1969-09-16 Byrd Ind Inc Foot actuated remote control unit for fishing motors

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1562803A (en) * 1921-12-02 1925-11-24 William I Stone Automobile signal device
US1830298A (en) * 1926-04-24 1931-11-03 Leonardo M Tartaglia Circuit closing device
US1679833A (en) * 1927-04-07 1928-08-07 Laugeson Earl Virgil Circuit closer for direction signals
US1853094A (en) * 1927-08-05 1932-04-12 Charles P Stewart Signaling apparatus
US2636092A (en) * 1950-03-16 1953-04-21 Gen Motors Corp Foot-operated direction signal switch
US3033946A (en) * 1960-04-06 1962-05-08 Gen Motors Corp Circuit controller
US3118123A (en) * 1962-02-26 1964-01-14 Singer Co Compressible resistance pile motor controller
US3467798A (en) * 1967-11-17 1969-09-16 Byrd Ind Inc Foot actuated remote control unit for fishing motors

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4430605A (en) 1981-06-22 1984-02-07 The Singer Company Motor control system utilizing switched controller
US5422521A (en) * 1993-11-18 1995-06-06 Liebel-Flarsheim Co. Foot operated control system for a multi-function device
US20070169271A1 (en) * 1995-01-03 2007-07-26 Allen E D Hospital bed and mattress having a retractable foot section
US7523515B2 (en) 1995-01-03 2009-04-28 Hill-Rom Services, Inc. Hospital bed and mattress having a retractable foot section
US8286282B2 (en) 1995-08-04 2012-10-16 Hill-Rom Services, Inc. Bed frame and mattress synchronous control
USD388056S (en) * 1995-09-29 1997-12-23 Liebel-Flarsheim Company Actuator for foot-operated control system
US5883615A (en) * 1995-09-29 1999-03-16 Liebel-Flarsheim Company Foot-operated control system for a multi-function
US6051797A (en) * 1997-10-01 2000-04-18 Siemens Aktiengesellschaft Foot pedal switch assembly for operating a medical diagnostic apparatus
US10251797B2 (en) 1999-12-29 2019-04-09 Hill-Rom Services, Inc. Hospital bed
US9009893B2 (en) 1999-12-29 2015-04-21 Hill-Rom Services, Inc. Hospital bed
US7296312B2 (en) 2002-09-06 2007-11-20 Hill-Rom Services, Inc. Hospital bed
US7406731B2 (en) 2002-09-06 2008-08-05 Holl-Rom Services, Inc. Hospital bed
US7506390B2 (en) 2002-09-06 2009-03-24 Hill-Rom Services, Inc. Patient support apparatus having controller area network
US7520006B2 (en) 2002-09-06 2009-04-21 Hill-Rom Services, Inc. Hospital bed including moveable foot portion
US20080010748A1 (en) * 2002-09-06 2008-01-17 Menkedick Douglas J Patient support apparatus having controller area network
USRE43532E1 (en) 2002-09-06 2012-07-24 Hill-Rom Services, Inc. Hospital bed
US7669263B2 (en) 2002-09-06 2010-03-02 Hill-Rom Services, Inc. Mattress assembly including adjustable length foot
US7703158B2 (en) 2002-09-06 2010-04-27 Hill-Rom Services, Inc. Patient support apparatus having a diagnostic system
US20050172405A1 (en) * 2002-09-06 2005-08-11 Menkedick Douglas J. Hospital bed
WO2006128630A1 (en) * 2005-05-30 2006-12-07 Erbe Elektromedizin Gmbh Foot switch for electromedical apparatus and method of manufacturing such a foot switch
CN101180696B (zh) * 2005-05-30 2011-01-12 爱尔伯电子医疗设备公司 用于电疗设备的脚踏开关
US20090205937A1 (en) * 2005-05-30 2009-08-20 Ralf Kuehner Foot switch for electromedical apparatus and method of manufacturing such a foot switch
JP2008545484A (ja) * 2005-05-30 2008-12-18 エルベ エレクトロメディジン ゲーエムベーハー 医療用電子機器にしようされるフットスイッチおよびその製造方法
US9089459B2 (en) 2013-11-18 2015-07-28 Völker GmbH Person support apparatus
WO2018059960A1 (de) * 2016-09-30 2018-04-05 Ferton Holding S.A. Fusspedal zum steuern eines medizinischen geräts
US10777373B2 (en) 2016-09-30 2020-09-15 Ferton Holding S.A. Foot pedal for controlling a medical device
US11419697B2 (en) * 2016-09-30 2022-08-23 Ferton Holding S.A. Foot pedal for wireless control of a medical device

Also Published As

Publication number Publication date
GB1274573A (en) 1972-05-17
DE1942495B1 (de) 1971-03-25
DE1942495C2 (de) 1971-11-04
AT302682B (de) 1972-10-25

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