US3399418A - Window or windscreen wiper mechanisms - Google Patents

Window or windscreen wiper mechanisms Download PDF

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Publication number
US3399418A
US3399418A US557143A US55714366A US3399418A US 3399418 A US3399418 A US 3399418A US 557143 A US557143 A US 557143A US 55714366 A US55714366 A US 55714366A US 3399418 A US3399418 A US 3399418A
Authority
US
United States
Prior art keywords
belt
pulleys
pins
spaced
tuck
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
US557143A
Other languages
English (en)
Inventor
Edward Donald Wynn
Charles Geoffrey Longford
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.)
Wynn Developments Ltd
Original Assignee
Wynn Developments Ltd
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 Wynn Developments Ltd filed Critical Wynn Developments Ltd
Application granted granted Critical
Publication of US3399418A publication Critical patent/US3399418A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/14—Wipers or the like, e.g. scrapers characterised by the drive personally driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/18—Means for transmitting drive mechanically
    • B60S1/20—Means for transmitting drive mechanically by cable drives; by flexible shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/34—Wiper arms; Mountings therefor
    • B60S1/3402—Wiper arms; Mountings therefor with means for obtaining particular wiping patterns
    • B60S1/3404—Wiper arms; Mountings therefor with means for obtaining particular wiping patterns the wiper blades being moved substantially parallel with themselves

Definitions

  • the present invention is an improvement in orm odification of that forming the subject of our" prior U S'. Patent'No. 3,042,954 which fis concerned'with window or windscreen wiper mechanism 'in'cluding'a carriage slidable to and fro between, guides and carrying a wiper blade supporting arm, an endless belt passing around spaced pulleys,'one d'f vvhich is drivenby means ofian electric motor or other driving mechanism t'o impart a unidirectional movement to 'said belt and means connect: ing said belt to the carriage to impart a straight line motionto the wiperbla'de'or blades.
  • the present invention is concerned with the connection of the carriage to the belt, the device in accordance with the present invention having been specially designed for use with belts of the flat or power grip type, the latter comprising a generally flat belt formed with integral spaced inwardly directed transverse projections or ribs for entering spaced notches in the pulleys to prevent belt slip.
  • the belt was connected to the carriage by means of a connecting rod or link, but it is within the scope of the invention to employ any suitable means such as for example a form of scotch yoke engaged by a laterally projecting pin or its equivalent mounted on the belt.
  • the chief object of the invention is to evolve a method of connection between a belt and some other component which will not impair the natural flexibility of the belt or interfere with the passage of the belt and its associated connection around the pulleys or rollers even though they may be of small diameter.
  • the invention consists broadly in forming the belt with a tuck at the connecting point, the tuck being directed outwardly of the belt and enclosing a pin or other driving member.
  • FIGURE 1 is a longitudinal section on the line A-B FIGURE 2 of one formof driving pad in accordance with the invention and its associated belt; J 1 7 FIGURE 2 is a transverse section on the line C-D in FIGURE 1; I g FIGURE 3 is a section on the line E-Fin FIGURE 4 illustrating a modified construction; y, I I
  • FIGURE 4 is a section on the line G;H in FIGURE ,3;
  • FIGURE 5 is a .plan view of the driving pad illustrated in FIGURES 3 and 4; and
  • v v FIGURE 6 is a sectional side elevation of a modified construction.
  • a straight line reciprocal wiper motion is achieved by means of an endless belt passing over two spaced pulleys, and driven by means of an electric motor or the like connected with one of the pulleys.
  • a carriage for the Wiper blade is provided which is permanently connected with the endless belt by means of a link hinged at one end to the belt and at the other end to the carriage. Therefore, upon driving one of the pulleys, the end of the link hinged to the belt travels in an endless path and imparts reciprocal movement to the carriage and therefore to the wiper blade.
  • the present invention is concerned with the particular connection between one end of the link 11 with the belt 1, while permitting the latter to pass over the pulleys.
  • the belt 1 has a series of transversely arranged longitudinally spaced projections or ribs 2 which are intended to enter a series of correspondingly spaced notches 3 in two spaced pulleys 4 one of the two pulleys being shown in FIGURES 3 and 4.
  • FIGURE 1 the belt 1 is formed with a tuck generally indicated by 5, the belt being bent about a transverse axis so that the two projections 2 adjacent the bend abut, the next two adjacent projections being spaced apart an amount 2a exactly double the normal spacing a.
  • the tuck passes over a pulley one of the notches in the pulley lying beneath the belt will not be entered by a projection but this will not materially adversely afiect the drive between the pulley and belt.
  • the driving pad indicated generally by 6 takes the form of a bracket carrying three laterally projecting spaced pins 7 which are threaded at their extremities to receive securing nuts 8 which engage a loose link 9 drilled to receive the three pins.
  • the pins are so spaced that the belt is held firmly in the shape of a tuck, the belt being in addition gripped between the bracket and the loose link when the nuts are tightened.
  • the bracket 6 includes an olfset part 10 having an axial protuberance forming a bearing for a link 11 intended to move a carriage carrying a windscreen wiper arm, the link being located between part 10 and a disc like member 12, parts 10 and 12 being threaded or otherwise connected together.
  • the pins 7 may carry distance sleeves 13 or may be of increased diameter intermediate their ends to form shoulders against which the link will abut to limit pressure on the edges of the belt.
  • the driving pad 6 is of substantially rectangular shape in plan and of substantially arcuate a rectangular slot "or opening through which the tuck' in the belt is passed, a pin 14 having a length greater than the length of the slot being passed through the tuck and maintained in that position by two split pins 15 passing through diametral holes in the pin near its extremities.
  • the distance a separating the projections 2 on the belt immediately below the pad is the same as the distance a separating the remainder of the projections,.the arcuate formation of the pad enabling the latter to pass easily around the pulleys.
  • the remainder of the pad corresponds substantially with the pad shown in FIGURES 1 and 2.
  • the pad 6 shown in FIGURE 6 has been designed primarily for use with fiat belts devoid of projections or ribs.
  • the construction is very similar to that shown in FIGURES 1 and 2 except for the fact that the three pins 7 are arranged in the form of a triangle to fit closely around the belt.
  • the pins may be screw threaded at their extremities to receive securing nuts engaging a separate link or plate whereby the belt will be gripped at its edges to connect it firmly to the pad, the belt passing freely over the pulley without interference.
  • the two outer pins support the belt against outward radial displacement and the central pin against inward radial displacement, the central pin being enclosed by the tuck.
  • a wiper assembly comprising a pair of spaced sprockets, an endless ribbed belt passing around said sprockets, a bracket member having projecting means extending therefrom, a portion of said belt being gripped by said projecting means to fasten said belt to said bracket member, said belt being folded outwardly so that said portion thereof conforms to the curvature of said pulleys, a carriage for wiper blades, a link member hinged at one end to said carriage and at the other end to said bracket,
  • said projecting means is in the form of three laterally spaced pins, said pins being so positionedfthat one pin is enclosed by the foldjrin'the belt, the 'belt'being'of the flat type, the portions of the belt on opposite 'sides of the fold lying beneath'theremaining pins'and beingfree to move radially inwardly to adapt themselves-to the curvature of the pulleys.
  • said bracket is formed with a rectangular shaped slot through which the fold in the belt projects radially outward and wherein said projecting means is in the form of a pin having a length greater than thewidth 0f the belt and the width of the slot, the ends of the pin projecting beyond the longitudinal edges of the slot abutting the upper surface of the bracket adjacentthe edges of the slot, the ribs on the belt lying within the fold abutting face to face.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Window Of Vehicle (AREA)
US557143A 1965-08-06 1966-06-13 Window or windscreen wiper mechanisms Expired - Lifetime US3399418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33785/65A GB1076287A (en) 1965-08-06 1965-08-06 Improvements in window or windscreen wiper mechanisms

Publications (1)

Publication Number Publication Date
US3399418A true US3399418A (en) 1968-09-03

Family

ID=10357401

Family Applications (1)

Application Number Title Priority Date Filing Date
US557143A Expired - Lifetime US3399418A (en) 1965-08-06 1966-06-13 Window or windscreen wiper mechanisms

Country Status (5)

Country Link
US (1) US3399418A (xx)
BE (1) BE685085A (xx)
DE (1) DE1950525U (xx)
GB (1) GB1076287A (xx)
NL (1) NL6608498A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068942A (en) * 1988-04-25 1991-12-03 Socrates Vrettos Windshield wiper assembly
EP3862234A1 (en) * 2020-02-07 2021-08-11 Valeo Systèmes d'Essuyage Wiping device for a detection system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1490597A (en) * 1975-09-05 1977-11-02 Wynstruments Ltd Device for connecting a member to an endless flat belt and window or windscreen wiper mechanisms including such a device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5068942A (en) * 1988-04-25 1991-12-03 Socrates Vrettos Windshield wiper assembly
EP3862234A1 (en) * 2020-02-07 2021-08-11 Valeo Systèmes d'Essuyage Wiping device for a detection system
WO2021156019A1 (en) * 2020-02-07 2021-08-12 Valeo Systèmes d'Essuyage Wiping device for a detection system
US20230057122A1 (en) * 2020-02-07 2023-02-23 Valeo Systemes D'essuyage Wiping device for a detection system

Also Published As

Publication number Publication date
BE685085A (xx) 1967-01-16
NL6608498A (xx) 1967-02-07
DE1950525U (de) 1966-11-24
GB1076287A (en) 1967-07-19

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