US3490148A - Folding rule and method of manufacturing the same - Google Patents

Folding rule and method of manufacturing the same Download PDF

Info

Publication number
US3490148A
US3490148A US745869A US3490148DA US3490148A US 3490148 A US3490148 A US 3490148A US 745869 A US745869 A US 745869A US 3490148D A US3490148D A US 3490148DA US 3490148 A US3490148 A US 3490148A
Authority
US
United States
Prior art keywords
pin
rule
spring
sections
pair
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
US745869A
Other languages
English (en)
Inventor
Gunther Mathes
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.)
PAV PRAZISIONS APPARATEBAU AG
Original Assignee
PAV PRAZISIONS APPARATEBAU AG
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 claimed from CH1033167A external-priority patent/CH479045A/de
Priority claimed from CH620468A external-priority patent/CH492950A/de
Priority claimed from CH850468A external-priority patent/CH492193A/de
Application filed by PAV PRAZISIONS APPARATEBAU AG filed Critical PAV PRAZISIONS APPARATEBAU AG
Application granted granted Critical
Publication of US3490148A publication Critical patent/US3490148A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/10—Devices for preventing movement between relatively-movable hinge parts
    • E05D11/1028—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open
    • E05D11/1078—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open the maintaining means acting parallel to the pivot
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/02—Rulers with scales or marks for direct reading
    • G01B3/04—Rulers with scales or marks for direct reading rigid
    • G01B3/06—Rulers with scales or marks for direct reading rigid folding

Definitions

  • a folding rule composed of a series of rule sections, wherein each elongated rule section has opposed end regions overlapping the end regions of an immediately preceding and an immediately following rule section to provide pairs of overlapping end regions. These pairs of overlapping end regions are each formed with aligned openings receiving a pin pivotally interconnecting the respective ruled sections, and each pin has one end engaging one of the overlapping pairs of end regions and an opposed end carrying a spring which engages the other of the pair of overlapping end regions to provide for resilient axial yieldability of the pin in the aligned openings of the overlapping end regions.
  • the elongated rule sections are made of plastic and have integral detent means at the overlapping end regions releasably holding the rule sections in a pair of opposed positions displaced angularly by 180 with respect to each other for each pair of successive rule sections.
  • the detent means causes resilient yielding of each pin along its axis during turning of the rule sections one with respect to the other between the positions thereof.
  • the present invention relates to folding rules.
  • a carpenters folding rule which conventionally is provided with a series of elongated rule sections where each rule section has opposed end regions overlapping the end regions of an immediately preceding and immediately following rule sections, with these end regions being pivotally interconnected with each other.
  • the overlapping pairs of end regions of the series of rule sections are conventionally pivotally connected by suitable pins, and detent devices are provided for releasably holding the rule sections one with respect to the next in a pair of opposed angular positions displaced by l80 with respect to each other.
  • the rule sections may be made of plastic and the detent structures are in the form of projections and corresponding recesses into which the projections can snap.
  • the pins which pivotally interconnect each pair of successive rule sections are provided with a yieldable resilient axial movement while engaging at one end one of each pair of overlapping end regions of the rule sections.
  • a known folding rule of this type has rivets which interconnect each pair of successive rule sections.
  • the detent structure formed by coacting projections and recesses is subjected to a relatively great pressure during unfolding of the folding rule, with the result that there is a considerable abrasion particularly at the edges of the detent projections and recesses.
  • the structure of the invention can be manufactured in suitable assembly lines by mass production techniques so as to keep the cost low.
  • the folding rule of the invention includes bendable spring elements which serve to retain the pivot pins in their proper positions while giving them a yieldable springy movement, the bendable springs being received in bores or other suitable openings formed in the pivot pins.
  • the pins are transversely grooved for receiving the spring, at least at one of their ends.
  • the latter may have one end, such as a head end, engaging one of each pair of overlapping end regions of the successive rule sections, while the other end of each pin is formed with a transversely extending groove receiving the bendable spring which presses against the other of each pair of overlapping end regions of the rule sections.
  • the bendable spring can take the form of a straight length of spring wire extending, for example, through a transverse bore adjacent an end of each pin and received in a groove formed in one of each pair of overlapping end regions of the rule sections.
  • each pair of overlapping end regions of the rule sections are provided one with a projection in the form of an annular ring surrounding the pin, and the other with a corresponding annular recess receiving the annular projection.
  • pivot pins which pivotally interconnect the sections and are slotted or notched at least at one of their ends to receive the springs, are permanently deformed for the purpose of narrowing the grooves or the like which receive the springs so as to better retain the latter.
  • FIG. 1A is a fragmentary elevation of a folding rule according to the invention, showing one complete rule section and the end regions of adjoining rule sections, with these end regions overlapping the one rule section which is completely shown;
  • FIG. 1B is a view of the structure of FIG. 1A as seen from the left side of FIG. 1A, with the structure at an overlapping pair of end regions of successive rule sections illustrated in section;
  • FIG. 2A is a fragmentary illustration on an enlarged scale, as compared with FIGS. 1A and 1B, of an inner surface of an end region of a rule section;
  • FIG. 2B is a fragmentary illustration of an end region of a rule section at the inner surface thereof, which coacts with the inner surface of the end region shown in FIG. 2A;
  • FIG. 2C is a fragmentary exploded longitudinal section showing how the components of FIGS. 2A and 2B coact with each other when assembled;
  • FIG. 3 is a transverse sectional elevational on an enlarged scale as compared to the previous figures, showing the pivotal interconnection between a pair of successive rule sections at the end regions thereof and illustrating in particular the construction just before a spring is introduced into a pin opening;
  • FIG. 4 shows a pivot pin before assembly
  • FIG. 5 illustrates the condition of the pivot pin after assembly with a spring operatively connected thereto, the rule sections being omitted from FIG. 5 for the sake of clarity, and the spring being shown in section;
  • FIG. 6 shows in elevation another embodiment of a pin for pivotally interconecting a pair of successive rule sections
  • FIG; 7 shows the pin of FIG. 6 after assembly with a spring.
  • FIGS. 1A and 1B show only one complete rule section and end regions of a pair of adjoining rule sections. It will, of course, be understood that in a given folding rule there are a considerably gerater number of rule sections forming a longitudinal series when the folding rule is unfolded and capable of being folded to a collapsed condition in which the several rule sections are situated one over the other for substantially overlapping each other along their entire lengths, whereas in the illustrated position the successive rule sections overlap each other only at their end regions where they are pivotally interconnected.
  • the rule section 2 which is shown in its entirety overlaps in one end region an immediately preceding rule section 1 and in an opposed end region and immediately following rule section 3, only the end regions of the rule sections 1 and 3 being illustrated where these end regions overlap the opposed end regions of the rule section 2. It is to be noted that the end region of the section 2, which overlaps the end region of the section 1, cloacts with the latter in precisely the same way as the end region of section 3 coacts with the end region of section 2.
  • the structure has at each pair of overlapping end regions identical features. Each pair of overlapping end regions are formed with aligned coaxial bores passing therethrough and receiving a pivot pin 4 by which the overlapping end regions are pivotally interconnected.
  • Each pivot pin 4 has a head end 5 which engages and is received in a recess formed in the outer surface of one of each pair of overlapping end regions.
  • the end of each pin 4 opposed to its head end 5 is formed with a transverse bore 6 through which a bendable spring member 7 extends, the spring member 7 being in the form of a straight length of a wire spring.
  • the bendable spring 7 has opposed elongated portions extending freely beyond the pin 4 and received in a groove 8 which is formed in the exterior surface of each pair of overlapping end regions, that opposes the exterior surface 4 where the head end 5 of the pin 4 is located.
  • the longitudinal groove 8 formed in the exterior surface of one of each pair of overlapping end regions has a minimum depth at its opposed ends where the extremities of the spring 7 are located and becomes gradually deeper toward the pin 4.
  • each pair of overlapping end regions which are directed toward each other are provided one With an annular ring-shaped projection 9 surrounding the pin 4 and the other with a mating annular depression or recess 10 which receives the annular projection 9.
  • the coacting projection 9 and recess 10 concentrically surround and are located directly next to the pin 4.
  • the releasable detent means for releasably holding the rule sections either in the unfolded or folded positions takes the form of a pair of detent projections 11 situated at the inner surface of one of the overlapping pair of rule sections, and of a pair of coacting depressions 12 sitauted at the inner surface of the other of the pair of overlapping end regions.
  • the detent projections 11 can be received in the detent depressions 12 in either one of a pair of positions of the end regions when they are displaced by with respect to each other.
  • the head end 5 which is countersunk into a recess formed in the exterior surface of the end region of section 3 has an exterior concave surface bulging to a slight extent outwardly beyond the exterior surface of the section 3.
  • the opposed end face of the pin 4 also projects to a slight extent beyond the exterior surface of the section 2.
  • the transverse bore 6 is situated close to the referred to opposed end face of the pin 4.
  • the pin 4 is made of a plastic material.
  • the groove 8 which receives the spring 7 has a minimum depth at its end regions and a maximum depth at its central region while having straight-line sloping portions between these end regions and the central region, thus providing the gradual increase in depth from the end regions toward the center region of the groove 8.
  • the opposed ends of the spring 7 are received in the end regions of the groove 8.
  • This construction of the groove 8 permits an axial movement of the pin 4 to take place with respect to the section 2 in opposition to the force of the spring 7 so that in this way a yieldable resilient movement of the end regions of sections 2 and 3 toward and away from each other at the location of pin 4 is achieved.
  • the bendable spring 7 may have the form of a wire of circular cross section or of a narrow spring ribbon of polygonal cross section.
  • the annular projection 9 of the section 2 provides together with the recess 10 of the section 3 the equivalent of a hinge structure which prevents longitudinal shifting of the sections with respect to each other.
  • Both of the sections 2 and 3 are turnable about the pin 4, with the section 3 being also turnable about the projection or ring 9 which forms the equivalent of a short pivot pin.
  • an identical mutual interaction is achieved when the section 2 is turned with respect to the section 3, while the pin 4 and the spring 7 coact to provide along the axis of the pin 4 a yieldable spring pressure holding the overlapping end regions together and pressing against each other.
  • annular projection 9 a depth which will situate its exterior flat surface in a plane normal to the axis of the pin 4 and situated somewhat beyond the plane of the inner surface of the section 2 so that between each pair of successive sections of the rule there will be a flat narrow gap.
  • the coacting detent projections 11 and depressions 12 of the sections 2 and 3, respectively, have a tapered wedge-shaped configuration and inclined side surfaces. As a result of these features, it is possible on the one hand for the projections to reliably snap into the depressions while on the other hand it is easy to displace the projections 11 out of the recesses 12.
  • the inner surface of the section 3 is additionally formed with a pair of small depressions 13 which, during relative turning of the sections 2 and 3, will receive the tips of the detent projections.
  • the pair of depressions 13 are situated along an axis which is at a ring angle to the axis along which the depressions 12 are located, so that after the successive rule sections 2 and 3 have been turned one with respect to the other through 90 there will be a weakened detent connection between the successive rule sections while they are situated at a right angle one with respect to the other.
  • each rule section has an identical construction and that each rule section, together with its projections, depressions, and bores, as well as its longitudinal groove is formed in a single operation and into a single body of plastic material as, for example, by injection molding.
  • the folding rule requires at each pair of overlapping end regions of the rule sections only a pair of additional elements, namely, the pin 4 and the spring 7, which in themselves have a simple construction.
  • the assembly of the individual rule sec tions to form the folding rule is quite simple since only the pin 4 is required at each pair of overlapping end regions of the rule sections to be passed through the aligned bores of these end regions, while the wire spring 7 need then only be placed in the longitudinal groove 8 upon being passed through the transverse bore 6 of the pin 4.
  • the annular projection 9 enables an intermediate space to be created between a pair of successive rule sections which are pivotally connected to each other, without the use of additional washers, shims or the like, so that the danger of damaging scales printed on the rule sections is greatly reduced, such damage to the printed scales being brought about in conventional rules as a result of the turning of the rule sections with respect to each other when they rub against each other as well as a result of rough use of the rule section in its folded condition.
  • the result of protecting the printing on the rule sections in the folded condition of the rule is also contributed to by the slightly projecting convexly curved end surfaces at the head end of each pin 4.
  • the folding rule of my invention has the advantage of enabling the scale which is printed or otherwise mounted on the rule sections to continue without interruption along the edges of the folding rule because of the structure of the pivotal interconnection and detent elements according to the invention.
  • the pair of rule sections 2 and 3 are shown in a transverse section interconnected by the pin 4 which extends through aligned openings in these rule sections which preferably are made of plastic.
  • the rule sections are pivotally connected to each other.
  • the head 5 of the pin 4 is countersunk into the rule section 3 at its exterior surface.
  • the length of the pin is selected in such a way that upon assembly of a pair of successive rule sections at their overlapping end regions, the end of the pin 4 distant from its head 5 is practically flush with the exterior surface of the rule section 2.
  • the free end of the pin 4 is formed wih a transverse groove extending across the pin 4 transversely to its axis, this transverse groove having a keyhole configuration in cross section, according to which the inner part of the groove which is of circular cross section forms the transverse bore 6 which, however, communicates with the exterior end face of the pin 4 through the elongated narrower portion 15 whose width is smaller than the portion 6 of circular cross section.
  • the transverse groove has beveled surfaces 16 which taper inwardly toward the narrowest part 15 of the groove.
  • the construction of the pin 4 is such that upon pressing of the spring 7 into the bore 6 the side surfaces which define the passage 15 will become elastically deformed and after entry of spring 7 into the bore 6 again spring back to their unstressed initial condition, so that the spring 7 is reliably held in the bore 6 and achieves a secure connection of a pair of successive rule sections.
  • the beveled surfaces 16 serve to bring about elastic deformation of the surfaces which define the passage 15 without damaging these surfaces as well as to achieve an easier introduction and pressing of the spring 7 into the bore 6 with the requirement of lesser forces than would be required if the beveled surfaces 16 were not present.
  • These beveled surfaces enable all the respective operations to be carried out without damaging the entrance edges of the pin 4 where the wire 7 is introduced. It is, of course, possible also to provide suitable openings and springs on both ends of the pin 4 to enable the spring 7 to be assembled with the construction.
  • transverse bore 6 forming part of a groove extending across the axis of the pin 4' inwardly from its end face opposed to its head 5', since in this embodiment the transverse bore 6 communicates with the exterior end face of the pin 4' through a narrow elongated passage 20 the width of which is smaller than the diameter of the circular cross section of the bore 6.
  • the side surfaces which define the passage 20 terminate in beveled surfaces forming parts of a pair of raised projections 22 and 23, as indicated in FIG. 4.
  • the cross section of the spring 7 may provide the bore 6 with a cross section which is not circular but matches that of the spring 7, or the spring 7, in a manner similar to a Seger ring, may circumferentially surround the pin 4' which in this case would be formed with a lateral slit.
  • the inwardly extending groove, slit, or the like which receives the spring would have a construction at the side surface of the pin 4 which would enable the opening to be closed, after introduction of the spring, by suitable tools.
  • the spring 7 is pushed into the transverse bore 6, and then a suitable stamping or pressure tool 25, shown in phantom lines in FIG. 5, subjects the pin 4 to an axial pressure acting on the raised portions 22 and 23 so that by cold-forming of the latter they are pressed toward the head end of the pin and thus narrow the passage into the passage 26 indicated in FIG. 5.
  • a suitable stamping or pressure tool 25 shown in phantom lines in FIG. 5
  • the pin 4 With a suitable material for the pin 4', it is possible to achieve hot-working instead of cold working so that the deformation of the material takes place under heat and pressure.
  • the latter type of operation will particularly be used in the case where the pin 4 is made of a plastic material.
  • Thermoplastic materials can be worked under pressure without any additional heat in order to be shaped in the above described manner.
  • FIGS. 6 and 7 there is a further embodiment of a pin 4a, according to which, after assembly of the pair of overlapping end regions of a pair of successive rule sections and the spring 7, the pin 4a is deformed with a fork-- shaped stamp 28, shown in phantom lines in FIG. 7, in such a way that the passage 15 leading to the bore 6 is at least partly closed to prevent the spring 7 from breaking out of the bore 6 even under intense stressing.
  • This embodiment of the spring-receiving end of the pin 4a and the subsequent deformation by the tool 28 assure a fully automatic assembly of the folding rule, even when using plastic pins or pins of similar material, manufactured, for example, by injection molding or diecasting, since the bendable wire spring 7 which preferably is in the form of a length of wire of circular section need not be directed axially through a bore 6, but instead can be pressed in along the axis of the pin 4a from the end face thereof opposed to the head 5a into the bore 6 while passing through the passages such as the passage 20 of FIG. 4 or the passage 15 of FIG. 6.
  • thermoplastics with and without fillers can be used for the manufacture of the sections of the folding rule of the invention.
  • the thermoplastic material can be reinforced with glass fibers.
  • materials such as a suitable polyamide reinforced with glass fibers and having a modulus of elasticity of approximately from 60,000 up to over 120,000 kg./ cm
  • said spring is in the form of a substantially straight wire spring member terminating in elongated portions extending beyond said pin on opposite sides thereof and engaging the exterior surface of one of each pair of overlapping end regions, said exterior surface being formed with a groove in which said spring member in situated, and said pin opening being a bore passing through said pin.
  • each pair of overlapping end regions have inner faces directed toward each other, one of said inner faces of each pair of overlapping end regions being formed with an annular recess surrounding said pin and the other of each pair of said end regions having at its inner face an annular projection surrounding said pin and adapted to be received in said annular recess.
  • a pin which at one end is formed with a slot extending transversely across the pin inwardly from an end face thereof at said one end at said pin, pressing a wire spring member into said slot to situate said spring member inwardly beyond said end face of said pin, and then pressing toward each other parts of said pin at said end face thereof where said slot is located to narrow said slot outwardly beyond said spring for retaining the latter assembled with said pin.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Springs (AREA)
US745869A 1967-06-20 1968-07-18 Folding rule and method of manufacturing the same Expired - Lifetime US3490148A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1033167A CH479045A (de) 1967-06-20 1967-06-20 Gliedermassstab
CH620468A CH492950A (de) 1968-04-25 1968-04-25 Gliedermasstab
CH850468A CH492193A (de) 1967-06-20 1968-06-07 Gliedermasstab

Publications (1)

Publication Number Publication Date
US3490148A true US3490148A (en) 1970-01-20

Family

ID=27175440

Family Applications (1)

Application Number Title Priority Date Filing Date
US745869A Expired - Lifetime US3490148A (en) 1967-06-20 1968-07-18 Folding rule and method of manufacturing the same

Country Status (6)

Country Link
US (1) US3490148A (de)
BE (1) BE718176A (de)
FR (1) FR1574443A (de)
GB (1) GB1214067A (de)
NL (1) NL6810141A (de)
SE (1) SE340892B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404195A2 (fr) * 1977-09-22 1979-04-20 Ullrich Stabila Messgeraete Metre pliant
US5201782A (en) * 1992-05-26 1993-04-13 Bartlett Christopher B Universally-adjustable axle-mountable tool for truing a bicycle wheel
US6334261B1 (en) * 1999-10-20 2002-01-01 The Stanley Works Collapsible square
US20060168834A1 (en) * 2005-02-02 2006-08-03 Cooper Brands, Inc. Folding rule
US20100229411A1 (en) * 2009-03-16 2010-09-16 Cheng Lin WANG Foldable measuring device
CH701126A1 (de) * 2009-05-28 2010-11-30 Kunststoffwerk Ag Buchs Massstabglied aus thermoplastischem Kunststoff und Gliedermassstab.
US8782914B1 (en) * 2011-03-27 2014-07-22 Gregory G. DeLuca Segmented measuring assembly and method of use
US20160370162A1 (en) * 2015-06-16 2016-12-22 Milwaukee Electric Tool Corporation Folding ruler
DE202019105481U1 (de) * 2019-10-04 2021-01-18 STABILA Messgeräte Gustav Ullrich GmbH Gliedermaßstab
US11014397B2 (en) * 2019-03-22 2021-05-25 David VUKAJ Adjustable angle measurement tool
CN115655057A (zh) * 2022-12-27 2023-01-31 安徽建筑大学 一种老旧设施改造长度测量装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009007556A1 (de) 2009-02-04 2010-08-12 Adga Adolf Gampper Gmbh Gliedermaßstab

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE880215C (de) * 1951-10-17 1953-06-18 Gisbert Wacker Gliedermassstab
US2663940A (en) * 1951-09-13 1953-12-29 Eagle Rule Mfg Corp Resilient folding rule hinge
US2713206A (en) * 1953-10-19 1955-07-19 Lufkin Rule Co Folding rule joint

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663940A (en) * 1951-09-13 1953-12-29 Eagle Rule Mfg Corp Resilient folding rule hinge
DE880215C (de) * 1951-10-17 1953-06-18 Gisbert Wacker Gliedermassstab
US2713206A (en) * 1953-10-19 1955-07-19 Lufkin Rule Co Folding rule joint

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404195A2 (fr) * 1977-09-22 1979-04-20 Ullrich Stabila Messgeraete Metre pliant
US5201782A (en) * 1992-05-26 1993-04-13 Bartlett Christopher B Universally-adjustable axle-mountable tool for truing a bicycle wheel
US6334261B1 (en) * 1999-10-20 2002-01-01 The Stanley Works Collapsible square
US20060168834A1 (en) * 2005-02-02 2006-08-03 Cooper Brands, Inc. Folding rule
US7111408B2 (en) 2005-02-02 2006-09-26 Cooper Brands, Inc. Folding rule
US20100229411A1 (en) * 2009-03-16 2010-09-16 Cheng Lin WANG Foldable measuring device
CH701126A1 (de) * 2009-05-28 2010-11-30 Kunststoffwerk Ag Buchs Massstabglied aus thermoplastischem Kunststoff und Gliedermassstab.
EP2259007A1 (de) 2009-05-28 2010-12-08 Kunststoffwerk AG Buchs Massstabglied aus thermoplastischem Kunststoff und Gliedermassstab
US8782914B1 (en) * 2011-03-27 2014-07-22 Gregory G. DeLuca Segmented measuring assembly and method of use
US20160370162A1 (en) * 2015-06-16 2016-12-22 Milwaukee Electric Tool Corporation Folding ruler
US10317183B2 (en) 2015-06-16 2019-06-11 Milwaukee Electric Tool Corporation Folding ruler
US20190249973A1 (en) * 2015-06-16 2019-08-15 Milwaukee Electric Tool Corporation Folding Ruler
US10690470B2 (en) 2015-06-16 2020-06-23 Milwaukee Electric Tool Corporation Folding ruler
US11014397B2 (en) * 2019-03-22 2021-05-25 David VUKAJ Adjustable angle measurement tool
DE202019105481U1 (de) * 2019-10-04 2021-01-18 STABILA Messgeräte Gustav Ullrich GmbH Gliedermaßstab
EP3800437A1 (de) 2019-10-04 2021-04-07 Stabila Messgeräte Gustav Ullrich GmbH Gliedermassstab
CN115655057A (zh) * 2022-12-27 2023-01-31 安徽建筑大学 一种老旧设施改造长度测量装置

Also Published As

Publication number Publication date
GB1214067A (en) 1970-12-02
NL6810141A (de) 1969-01-22
SE340892B (de) 1971-12-06
BE718176A (de) 1968-12-31
FR1574443A (de) 1969-07-11

Similar Documents

Publication Publication Date Title
US3490148A (en) Folding rule and method of manufacturing the same
US3991436A (en) Butt hinge with means to prevent the wear of knuckles
EP1335222B1 (de) Steckerteil für eine optische Steckverbindung
EP0107625B1 (de) Schreib- oder Zeichenvorrichtung
DE2225499A1 (de) Gleichlaufdrehgelenk
US3104430A (en) Lock pin
GB1382227A (en) Spring loaded hinge
US4872774A (en) Instrument for writing and drawing
DE202009011052U1 (de) Aus Schlüssel und Schließzylinder bestehende Schließvorrichtung
US3503130A (en) Folding rules
JP5478644B2 (ja) シリンダ錠
DE202011000360U1 (de) Schmuckstück und Ringkörper für ein Schmuckstück
DE4028745C2 (de)
GB2054724A (en) Cylinder lock having a flat key
EP3456448B1 (de) Kupplungsvorrichtung
JP4745703B2 (ja) クリップ取り付け装置
DE202017104154U1 (de) Cuttermesser
DE3538635C2 (de)
CH680935A5 (de)
DE3010959A1 (de) Doppelzylinderschloss
DE2433918C2 (de) Flachschlüssel für einen Schließzylinder
US3373649A (en) Split fastener with locking wedge
US1227206A (en) Joint for folding rules.
US3856420A (en) Extended-life pen
DE602005006390T2 (de) Eine einziehbare minenführung umfassender mechanischer stift