ES253567U - Un dispositivo de bloqueo para bloquear el apoyo del conjun-to de escala movil de una escalera de tijera extensible - Google Patents

Un dispositivo de bloqueo para bloquear el apoyo del conjun-to de escala movil de una escalera de tijera extensible

Info

Publication number
ES253567U
ES253567U ES1979253567U ES253567U ES253567U ES 253567 U ES253567 U ES 253567U ES 1979253567 U ES1979253567 U ES 1979253567U ES 253567 U ES253567 U ES 253567U ES 253567 U ES253567 U ES 253567U
Authority
ES
Spain
Prior art keywords
trestle ladder
rung
fly assembly
extension
extension trestle
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.)
Granted
Application number
ES1979253567U
Other languages
English (en)
Other versions
ES253567Y (es
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.)
RD Werner Co Inc
Original Assignee
RD Werner Co Inc
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 RD Werner Co Inc filed Critical RD Werner Co Inc
Publication of ES253567U publication Critical patent/ES253567U/es
Application granted granted Critical
Publication of ES253567Y publication Critical patent/ES253567Y/es
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/06—Securing devices or hooks for parts of extensible ladders
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
    • E06C1/22—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

Un dispositivo de bloqueo para bloquear el apoyo del conjunto de escala móvil de una escalera de tijera extensible, en la cual el conjunto de escala móvil se extiende o se baja por movimiento dentro de un plano en general vertical, mediante cooperación selectiva con un peldaño del conjunto de escala móvil, comprendiendo dicho dispositivo medios de apoyo para aplicación de apoyo de un peldaño seleccionado del conjunto de escala móvil a lo largo de al menos la mitad de la longitud de dicho peldaño; estando dichos medios de apoyo unidos a pivotamiento al caballete de escalera y siendo desplazables radialmente desde una posición de apoyo preseleccionada en que los medios de apoyo están dispuestos transversalmente al plano en el cual es movible el conjunto de escala móvil, a una posición de acomodación, en que los medios de apoyo están dispuestos próximos pero separados de dicho plano, con lo que dicho conjunto de escala móvil puede ser movido dentro de dicho plano.
ES1979253567U 1978-12-11 1979-11-27 Un dispositivo de bloqueo para bloquear el apoyo del conjun-to de escala movil de una escalera de tijera extensible Expired ES253567Y (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/968,210 US4240522A (en) 1978-12-11 1978-12-11 Extension trestle ladder

Publications (2)

Publication Number Publication Date
ES253567U true ES253567U (es) 1981-06-16
ES253567Y ES253567Y (es) 1981-12-01

Family

ID=25513912

Family Applications (1)

Application Number Title Priority Date Filing Date
ES1979253567U Expired ES253567Y (es) 1978-12-11 1979-11-27 Un dispositivo de bloqueo para bloquear el apoyo del conjun-to de escala movil de una escalera de tijera extensible

Country Status (11)

Country Link
US (1) US4240522A (es)
JP (1) JPS5581994A (es)
AU (1) AU526911B2 (es)
BR (1) BR7907958A (es)
CA (1) CA1123799A (es)
DE (1) DE2949636A1 (es)
ES (1) ES253567Y (es)
FR (1) FR2444152A1 (es)
GB (1) GB2036845B (es)
NL (1) NL7908558A (es)
NZ (1) NZ192044A (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9022043D0 (en) * 1990-10-10 1990-11-21 Daniels Seymour C Stair apparatus
ES2084784T3 (es) * 1990-11-06 1996-05-16 Mayer Oskar Foods Envase de alimentos que tiene una bandeja base rigida compartimentada.
US5740575A (en) * 1995-09-29 1998-04-21 Gordon; Julian D. Ramp systems
US5922376A (en) * 1996-01-02 1999-07-13 Privert; Peter Nestable food and beverage package
CA2215873C (en) * 1997-09-10 2003-12-02 J.M. Schneider Inc. Improvements in packages for a food tray
US8992388B2 (en) * 2011-06-10 2015-03-31 Gym-Mark, Inc. Modular ladder frame playground system
US11131103B2 (en) * 2016-03-22 2021-09-28 Werner Co. Assembly, plank adapter for a work stand and method
CN109025781A (zh) * 2018-10-29 2018-12-18 中航鼎衡造船有限公司 一种滑动型人字梯

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US838831A (en) * 1906-01-04 1906-12-18 Daniel W Church Extension step-ladder.
US947810A (en) * 1908-10-27 1910-02-01 Wright L Glidden Extension ladder and trestle.
US1140390A (en) * 1913-04-29 1915-05-25 Fred H Moulton Extension-trestle.
US1965311A (en) * 1933-09-09 1934-07-03 Herman B Gaffers Combined extension ladder and trestle
US2210803A (en) * 1938-08-25 1940-08-06 Stanley E Dunn Extension ladder
US2144440A (en) * 1938-09-16 1939-01-17 Herman B Gaffers Extension ladder trestle
US2947378A (en) * 1959-06-29 1960-08-02 Bergur L Brynjolfsson Extensible trestle
JPS4912354U (es) * 1972-05-15 1974-02-01

Also Published As

Publication number Publication date
AU5364379A (en) 1980-07-10
JPS5581994A (en) 1980-06-20
CA1123799A (en) 1982-05-18
GB2036845A (en) 1980-07-02
BR7907958A (pt) 1980-07-08
DE2949636A1 (de) 1980-06-19
GB2036845B (en) 1983-01-06
ES253567Y (es) 1981-12-01
FR2444152B1 (es) 1983-06-17
US4240522A (en) 1980-12-23
NZ192044A (en) 1982-05-25
NL7908558A (nl) 1980-06-13
FR2444152A1 (fr) 1980-07-11
JPS6342069B2 (es) 1988-08-19
AU526911B2 (en) 1983-02-03

Similar Documents

Publication Publication Date Title
IT7927090A0 (it) Procedimento per la registrazione automatica dell'altezza iniziale di un cannello di taglio, rispetto al pezzo.
IT1112121B (it) Pilota automatico adattativo per bastimenti
IT8083316A0 (it) Dispositivo di controllo automatico della posizione dell'attrezzatura di lavoro a terra di un veicolo.
ES253567U (es) Un dispositivo de bloqueo para bloquear el apoyo del conjun-to de escala movil de una escalera de tijera extensible
IT7825588A0 (it) Regolatore per stabilizzare la posizione di un satellite.
DE2962283D1 (en) Adjustable lamps
IT7820917A0 (it) Composizioni a base d'argento.
GB2002579B (en) Avalanche diode
JPS53120292A (en) Hetero structure diode laser
IT8567736A1 (it) Meccanismo di molla a gas con compensazione automatica al variare della temperatura.
van Leeuwen et al. Alternative path compression techniques
IT1084566B (it) Regolatore di elusso automatico per somministrazioni endovenose.
IT7823951A0 (it) 1,1-difluoro-2,2-dialoetildifluorometil eteri deuterati.
JPS5344580A (en) 1,6-dihydropyridazine derivatives
ES506384A0 (es) Mecanismo de control de ajuste horizontal de plataforma,apa-rellaje o similar montada en el extremo de un brazo dinamicoarticulado y-o extensible
NO782594L (no) Nivaaregulering.
ES529237A0 (es) Procedimiento para preparar composiciones anti-helminticas a base de derivados de tetramisol o levamisol.
ES234167Y (es) Escalera metalica deslizante o transformable.
JPS5378256A (en) Polyacetal composition
JPS5388476A (en) Damping oil pressure controller
JPS548990A (en) Avalanche diode
SU655436A2 (ru) Каретка дл перемещени краскораспылител
IT7831269A0 (it) Composizioni insetticide a base di derivati di immino-3-tiazolidincarbotioammidi.
AT375138B (de) Moebelscharnier mit einer schenkelfeder als zuhaltevorrichtung
JPS52140112A (en) Automatic stop-at-fixed-position control