GB2045699A - Vehicle boarding platforms - Google Patents

Vehicle boarding platforms Download PDF

Info

Publication number
GB2045699A
GB2045699A GB8011226A GB8011226A GB2045699A GB 2045699 A GB2045699 A GB 2045699A GB 8011226 A GB8011226 A GB 8011226A GB 8011226 A GB8011226 A GB 8011226A GB 2045699 A GB2045699 A GB 2045699A
Authority
GB
United Kingdom
Prior art keywords
platform
vehicle
base member
substantially
step
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.)
Withdrawn
Application number
GB8011226A
Original Assignee
Smith G C
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 to GB7912321 priority Critical
Application filed by Smith G C filed Critical Smith G C
Priority to GB8011226A priority patent/GB2045699A/en
Publication of GB2045699A publication Critical patent/GB2045699A/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
    • B60P1/4471General means for controlling movements of the loading platform, e.g. hydraulic systems

Abstract

The platform has a step (10) mounted on a vehicle (12) beneath an entrance thereof. The step (10) is moved between extended and retracted positions by means of a double-acting actuator (20) and is guided by paralleled telescopic members (18). Actuator (20) may be hydraulic or pneumatic; if pneumatic it may be powered from the vehicle air brake pressure source. A mechanism may be provided to indicate to the driver when the step (10) is extended. <IMAGE>

Description

SPECIFICATION Improvements relating to vehicles The present invention relates to vehicles and particularly to the provision of movable platforms for vehicles.

One of the problems associated with vehicles such as mobile libraries where access by the public is required is the difficulty of providing easy access where the interior floor of the vehicle is as much as two to four feet above ground. Manually operated folding steps are sometimes provided as are separate stools but these are not satisfactory, particularly in the latter case where it may be difficult to ensure stability.

The present invention seeks to provide an improved movable platform for vehicles.

The present invention provides a movable platform for a vehicle, comprising a base member having a substantially planar surface, means actuable to move the base member between a first retracted position and a second extended position and guide means for maintaining the base member in a substantially horizontal attitude in said second position.

In a preferred embodiment of the present invention the base member is a step which is movable by means of a hydraulically or pneumatically actuable double-acting piston and cylinder unit.

A movable platform according to the present invention is suitable for use as a movable step on vehicles such as mobile libraries, coaches and ambulances where the step can be moved between an extended, in-use position and a retracted position.

The present invention is further described hereinafter, by way of example, with reference to the accompanying drawings in which: Figure 1 is a side elevation, partly in section, of a platform according to the present invention mounted on a vehicle; and Figure 2 is a diagram of a control circuit for the platform of Fig. 1.

Fig. 1 shows a base member in the form of a step 10 mounted on a vehicle 12, only part of which is shown and that being partially in section. A portion of the interior flooring 14 is shown together with a portion of the near side wall 16.

The step 10 is mounted directly beneath an entrance (not shown in the drawings) of the vehicle by means of two paralleled telescopic members 1 8 (only one of which is shown in the drawings) and a double-acting piston and cylinder unit 20. The latter has a piston rod 22 which is pivotally secured to the trailing edge of the step 10 while the remote end of the cylinder is pivotally mounted to the vehicle by way of a bracket 24. Each telescopic member 18 has three arms 26, 28 and 30 the last of which is rigidly secured to the vehicle while the arm 26 is rigidly secured to a respective side of the step 10.

The step 10 is shown in its extended position, the piston and cylinder unit 20 and the telescopic members 1 8 being so arranged to ensure that the step 10 is in a substantially horizontal attitude. While in the described embodiment the step 10 is also maintained in a substantially horizontal attitude in its retracted position (not shown) this is not an essential feature of the invention and the step 10 may be moved into any convenient attitude in its retracted position.

A warning mechanism may be provided to indicate when the step 10 is in its extended position. This is advisable where actuation of the piston and cylinder unit 20 is effected from a remote position for example by a driver of the vehicle. In the illustrated embodiment the warning mechanism comprises a switch 32 which controls an indicator (not shown) such as a lamp and is in turn actuated by movement of the step 10 into its extended position by suitable means such as a spring 34. The latter is tensioned during extension of the step 10 to trip the switch 32.

The piston and cylinder unit 20 is hydraulically or pneumatically operated, preferably being pneumatically operated to enable it to be powered from the same pressure source as that used for the vehicle air brakes, and is controlled by a suitable circuit such as shown in Fig. 2. The piston and cylinder unit 20 has pneumatic ports 36 and 38 at respective ends of the unit, these ports being connected by airlines 40 and 42 to a two-position valve 44 which may be electrically or mechanically operated and is preferably a hand operated valve. The valve 44 connects a selected one of the lines 42, 44 to a source 46 of pressurised gas while venting theother of the two lines 40, 42 to atmosphere.In the position illustrated the valve 44 connects the line 40 to the source 46 thus driving the piston 48 of the unit 20 in the direction indicated by arrow A to extend the step 1 0. The source 46 is preferably the pressure source for the vehicle air brakes.

As an alternative to the spring 34 and switch 32 the valve 44 may itself trip a switch which energises a warning lamp to indicate that the step 10 is extended. The valve 44 is preferably positioned on the vehicle so that it may controlled by the vehicle driver.

Finally, the pressure of the gas applied to the unit 20 is conveniently fifty pounds per square inch. Where the gas is air drawn from the vehicle air brake pressure source a pressure reduction valve (not shown) is preferably connected between the source 46 and the valve 44. In addition, a pressure control valve (not shown) prevents air being drawn from the vehicle air brake pressure source if the pressure of the latter drops to a preselected minimum safety value.

Claims (9)

1. A movable platform for a vehicle com prising a base-member having a substantially planar surface, means actuable to move the base member between a first retracted posi tion-and a second extended position and gu ide means for maintaining the base member in a substantially horizontal attitude in said second position.
2. A-platform as claimed in claim 1 wherein said means actuable to-move the base member comprises a double-actingfoylin- der adapted to be mounted on the vehicle, and said guide means comprises at least two substantially parallel telescopic members, adapted to couple the platform to the vehicle.
3. A platform as claimed in claim2 wherein said cylinder is-pneumatically opera ble.
4. A platform as claimed in claim.3 wherein said cylinder is adapted to be coupled to a pneumatic.braking system of the vehicle by way of a pressure reducing valve.
5. A platform as claimed in claim 2 wherein said cylinder is hydraulically operable.
6. A platform as claimed in any of claims 1 to 5 further comprising a warning mecha nism actuable responsively to extension of the base member to indicate that said base mem ber is extended.
7. A movable platform substantially as hereinbefore described with reference-to the accompanying drawings.
8. A movable platform substantially as hereinbefore described with reference to the drawings accompanying United Kingdom patent application No. 7912321.
9. A vehicle having a movable platform as claimed in any of claims 1-to 8.
GB8011226A 1979-04-07 1980-04-03 Vehicle boarding platforms Withdrawn GB2045699A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB7912321 1979-04-07
GB8011226A GB2045699A (en) 1979-04-07 1980-04-03 Vehicle boarding platforms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8011226A GB2045699A (en) 1979-04-07 1980-04-03 Vehicle boarding platforms

Publications (1)

Publication Number Publication Date
GB2045699A true GB2045699A (en) 1980-11-05

Family

ID=26271181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8011226A Withdrawn GB2045699A (en) 1979-04-07 1980-04-03 Vehicle boarding platforms

Country Status (1)

Country Link
GB (1) GB2045699A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072361A1 (en) * 1981-08-03 1983-02-16 AB Thoreb A movable foot-step for a vehicle
WO1999010199A1 (en) * 1997-08-22 1999-03-04 Ricon Corporation Movable ramp with controller
EP1868872A2 (en) * 2005-03-24 2007-12-26 Patriot Lift Co., LLC Lift gate apparatus for a truck or trailer body
GB2450712A (en) * 2007-07-04 2009-01-07 Cnh Uk Ltd Vehicle having an elevated cab and access steps.
US7637519B2 (en) * 2006-10-30 2009-12-29 89908, Inc. Moveable support platform
US7740261B2 (en) 2006-10-27 2010-06-22 89908, Inc. Tailgate access step
US7878519B2 (en) * 2006-03-01 2011-02-01 Hallmark Julian W Electric slide step for recreational vehicle
US7905324B2 (en) 2004-07-15 2011-03-15 Caterpillar Inc. Access system for a moveable vehicle
US8157277B2 (en) 2001-02-15 2012-04-17 89908, Inc. Retractable vehicle step
US8827294B1 (en) 2006-10-27 2014-09-09 Lund Motions Products, Inc. Retractable vehicle step
CN104442578A (en) * 2014-12-17 2015-03-25 安徽安凯汽车股份有限公司 Fixing structure assembly of stairs above transmission of double-deck bus
US9346405B2 (en) 2006-10-27 2016-05-24 Lund Motion Products, Inc. Retractable vehicle step
US9701249B2 (en) 2006-10-27 2017-07-11 Lund Motion Products, Inc. Retractable vehicle step
US9944231B2 (en) 2006-10-27 2018-04-17 Lund Motion Products, Inc. Retractable vehicle step
US10077016B2 (en) 2015-06-05 2018-09-18 Lund Motion Products, Inc. Retractable step and side bar assembly for raised vehicle
US10195997B2 (en) 2015-06-05 2019-02-05 Lund Motion Products, Inc. Horizontal retractable vehicle step
US10286847B2 (en) 2017-01-30 2019-05-14 Ford Global Technologies, Llc Powered running board assembly and method of operation
US10391944B2 (en) 2013-09-27 2019-08-27 Lund, Inc. Modular rail and step system

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072361A1 (en) * 1981-08-03 1983-02-16 AB Thoreb A movable foot-step for a vehicle
WO1999010199A1 (en) * 1997-08-22 1999-03-04 Ricon Corporation Movable ramp with controller
US10053017B2 (en) 2001-02-15 2018-08-21 Lund Motion Products, Inc. Retractable vehicle step
US9302626B2 (en) 2001-02-15 2016-04-05 Lund Motion Products, Inc. Retractable vehicle step
US10322677B1 (en) 2001-02-15 2019-06-18 Lund Motion Products, Inc. Retractable vehicle step
US8844957B2 (en) 2001-02-15 2014-09-30 Lund Motion Products, Inc. Retractable vehicle step
US8157277B2 (en) 2001-02-15 2012-04-17 89908, Inc. Retractable vehicle step
US9561751B2 (en) 2001-02-15 2017-02-07 Lund Motion Products, Inc. Retractable vehicle step
US10183624B2 (en) 2001-10-16 2019-01-22 Lund Motion Products, Inc. Retractable vehicle step
EP1619076B1 (en) * 2004-07-15 2017-04-12 Caterpillar Inc. Access system for a moveable vehicle
US7905324B2 (en) 2004-07-15 2011-03-15 Caterpillar Inc. Access system for a moveable vehicle
US7806647B2 (en) 2005-03-24 2010-10-05 Patriot Lift Co., Llc Lift gate apparatus for a truck or trailer body
EP1868872A2 (en) * 2005-03-24 2007-12-26 Patriot Lift Co., LLC Lift gate apparatus for a truck or trailer body
EP1868872A4 (en) * 2005-03-24 2010-03-10 Patriot Lift Co Llc Lift gate apparatus for a truck or trailer body
US7878519B2 (en) * 2006-03-01 2011-02-01 Hallmark Julian W Electric slide step for recreational vehicle
US8827294B1 (en) 2006-10-27 2014-09-09 Lund Motions Products, Inc. Retractable vehicle step
US8936266B2 (en) 2006-10-27 2015-01-20 Lund Motion Products, Inc. Tailgate access step
US8360455B2 (en) 2006-10-27 2013-01-29 89908, Inc. Tailgate access step
US9701249B2 (en) 2006-10-27 2017-07-11 Lund Motion Products, Inc. Retractable vehicle step
US7740261B2 (en) 2006-10-27 2010-06-22 89908, Inc. Tailgate access step
US9346405B2 (en) 2006-10-27 2016-05-24 Lund Motion Products, Inc. Retractable vehicle step
US9944231B2 (en) 2006-10-27 2018-04-17 Lund Motion Products, Inc. Retractable vehicle step
US10493920B2 (en) 2006-10-27 2019-12-03 Lund Motion Products, Inc. Retractable vehicle step
US8419034B2 (en) 2006-10-30 2013-04-16 89908, Inc. Moveable support platform
US8944451B2 (en) 2006-10-30 2015-02-03 Lund Motion Products, Inc. Moveable support platform
US7637519B2 (en) * 2006-10-30 2009-12-29 89908, Inc. Moveable support platform
US8002298B2 (en) 2007-07-04 2011-08-23 Cnh America Llc Vehicle having an elevated cab and access steps
GB2450712A (en) * 2007-07-04 2009-01-07 Cnh Uk Ltd Vehicle having an elevated cab and access steps.
US10391944B2 (en) 2013-09-27 2019-08-27 Lund, Inc. Modular rail and step system
CN104442578B (en) * 2014-12-17 2016-08-24 安徽安凯汽车股份有限公司 The fixed structure assembly of stair above a kind of double-layer public transport vehicle change speed gear box
CN104442578A (en) * 2014-12-17 2015-03-25 安徽安凯汽车股份有限公司 Fixing structure assembly of stairs above transmission of double-deck bus
US10195997B2 (en) 2015-06-05 2019-02-05 Lund Motion Products, Inc. Horizontal retractable vehicle step
US10077016B2 (en) 2015-06-05 2018-09-18 Lund Motion Products, Inc. Retractable step and side bar assembly for raised vehicle
US10286847B2 (en) 2017-01-30 2019-05-14 Ford Global Technologies, Llc Powered running board assembly and method of operation

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)