US3630395A - Arrangement of rear hoists for motor vehicles - Google Patents

Arrangement of rear hoists for motor vehicles Download PDF

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Publication number
US3630395A
US3630395A US19783A US3630395DA US3630395A US 3630395 A US3630395 A US 3630395A US 19783 A US19783 A US 19783A US 3630395D A US3630395D A US 3630395DA US 3630395 A US3630395 A US 3630395A
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US
United States
Prior art keywords
platform
arms
vehicle
pair
lifting arms
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
US19783A
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English (en)
Inventor
Sten Magnus Bunge
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.)
Hydro Lift AB
Original Assignee
Hydro Lift AB
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 Hydro Lift AB filed Critical Hydro Lift AB
Application granted granted Critical
Publication of US3630395A publication Critical patent/US3630395A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44—Vehicles 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
    • B60P1/4414—Vehicles 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 and keeping the loading platform parallel to the ground when raising the load

Definitions

  • the present invention relates to vehicles provided with rear hoist platforms.
  • a vehicle comprising a hoist platform mounted on two pairs of parallelogram lifting arms at the rear of the vehicle, means to raise and lower the platform in at least a nearly horizontal position and means to tip the platform downwardly when lowered to the ground, the improvement comprising an adjustably rotatable cam mounted on the platform to engage a vertical connecting link between the lifting arms to vary the angle
  • FIG. 1 shows a form of embodiment of a rear hoist according to the invention during lifting with the hoist platform in the normal position, i.e., when the vehicle is standing upon a horizontal roadway and is seen from the side;
  • FIG. 2 shows the same, but with the hoist platform in the position which it assumes when the vehicle is standing upon a downward slope;
  • FIG. 3 shows the same as FIG. 1, but with the hoist platform in the position which it assumes when the vehicle is standing upon an upward slope, and
  • FIG. 4 shows a side view of the suspension device of the hoist platform on a larger scale.
  • FIG. 1 the rear end of a vehicle is shown schematically in FIG. 1.
  • a transverse shaft 12 which is rotatably borne by supports l3 and is adapted to be turned by means of an arm 14 which is fixed thereto and may be operated, for example, by an hydraulic cylinder 15.
  • Rigidly secured to the shaft 12 are two short arms 16, whose free ends are joined by means of pivots 17 each to a corresponding one of two lower lifting arms 3.
  • Two upper lifting arms 2 are pivotally mounted each at one end upon gudgeon pins 18 in the supports 13.
  • the free outer ends of the arms 2, 3 are interconnected by means of links 8, mounted upon transverse shafts 4, 19.
  • the distance between the axes of the shafts l2 and 18 is precisely the same as the distance between the axes of the shafts 4, 19.
  • the arms 16 are provided with abutments 20, so placed that the distance between the shaft 12 and the shafts 19 is equal to the distance between the pivots l8 and the shafts 4 when an extension 21 of the lower lifting arms 3 is bearing against the abutment 20, but becomes shorter when the arms 16 have been pivoted counterclockwise under the frame 11. This shortening can be achieved only if the lifting arms 2, 3 are in their lowermost position and rest upon the ground with their free outer ends, causing the rear free end of the hoist platform 1 to sink until it,
  • the hoist platform 1 is provided at its inner end and upon its underside with two ears 5, in which is mounted a transverse shaft 22, fixed whereupon is at least one eccentric 6, the perimeter 7 of which is adapted to bear at least against one of the links 8.
  • the shaft 22 is adapted to be rotated by means of a lever 9, whose free end is equipped with a crank 10, made operable by hand or by means of a preferably hydraulic servomotor.
  • the eccentric 6 is so mounted that the hoist platform I can be caused by rotating the eccentric 6 to lean both up and down relatively to the surface of the ground and so dimensioned that the hoist platform can be brought into a horizontal position when the vehicle is practice.
  • a hoist platform pivotally mounted on two pairs of parallelogram lifting arm linkages which, in turn, are pivotally mounted at the rear of the vehicle, means to raise and lower the platform in an at least nearly horizontal position and means to tip the platform downwardly when lowered to the ground
  • the improvement comprising an adjustably rotatable cam mounted on the platform and engageable with a vertical connecting link between the free ends of the parallelogram lifting arm linkage to vary the angle of the platform during raising and lowering.
  • a hoist platform at the rear of the vehicle an upper pair of platfonn-lifting arms, a lower pair of platform-lifting arms, means pivotally connecting outer ends of both pairs of platform-lifting arms to the platform, means pivotally connecting inner ends of one pair of the platform-lifting arms to support-means on the vehicle, a further pair of arms secured on a rotatable shaft, power means to rotate the shaft, means pivotally connecting inner ends of the lowerpair of the platform-lifting arms to said further pair of arms, abutment means on said further pair of arms to abuttingly engage said lower pair of the platform-lifting arms when raising the platform from and when lowering the platform to a ground-engaging position so that said lower pair of the platform-lifting arms rotate about the axis of said shaft, means to pivot the platform downwardly when in the groundcngaging position and disengage said abutment means with rotation of said shaft, the improvement comprising an adjustably rotatable cam mounted on the platform and engage

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
US19783A 1969-10-21 1970-03-16 Arrangement of rear hoists for motor vehicles Expired - Lifetime US3630395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE14390/69A SE336559B (fi) 1969-10-21 1969-10-21

Publications (1)

Publication Number Publication Date
US3630395A true US3630395A (en) 1971-12-28

Family

ID=20299023

Family Applications (1)

Application Number Title Priority Date Filing Date
US19783A Expired - Lifetime US3630395A (en) 1969-10-21 1970-03-16 Arrangement of rear hoists for motor vehicles

Country Status (5)

Country Link
US (1) US3630395A (fi)
DE (1) DE2051286A1 (fi)
DK (1) DK126315B (fi)
FI (1) FI52048C (fi)
SE (1) SE336559B (fi)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355942A (en) * 1979-07-23 1982-10-26 Rolfe Keith O Loading and unloading apparatus for vehicles
US4509894A (en) * 1979-07-23 1985-04-09 Rolfe Keith O Loading and unloading apparatus for a vehicle
US4930973A (en) * 1989-03-30 1990-06-05 Waltco Truck Equipment Co., Inc. Tiltable tailgate lift
US5941677A (en) * 1994-07-26 1999-08-24 Eco Global Patents B.V. Loading platform
US10415296B2 (en) * 2014-08-22 2019-09-17 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle having an automatically controllable rear-flap assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2332885A2 (fr) * 1975-11-26 1977-06-24 Chapiron Andre Perfectionnements aux hayons elevateurs
DE3936340A1 (de) * 1989-11-02 1991-05-08 Maier Peter Vorrichtung zum bewegen einer ladebordwand

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2822938A (en) * 1956-01-09 1958-02-11 Arwin E Ormsby Lift tail gate
US3065868A (en) * 1959-02-17 1962-11-27 Anthony Co Anti-bounce lock
US3175707A (en) * 1962-03-22 1965-03-30 Anthony Co Automatic fold-up device for drop leaf tailgate
GB1027999A (en) * 1964-06-05 1966-05-04 Ver Flugtechnische Werke Loading device for lorries fixedly mounted on the vehicle
US3258140A (en) * 1964-06-29 1966-06-28 Cobey Corp Tail gate loading apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2822938A (en) * 1956-01-09 1958-02-11 Arwin E Ormsby Lift tail gate
US3065868A (en) * 1959-02-17 1962-11-27 Anthony Co Anti-bounce lock
US3175707A (en) * 1962-03-22 1965-03-30 Anthony Co Automatic fold-up device for drop leaf tailgate
GB1027999A (en) * 1964-06-05 1966-05-04 Ver Flugtechnische Werke Loading device for lorries fixedly mounted on the vehicle
US3258140A (en) * 1964-06-29 1966-06-28 Cobey Corp Tail gate loading apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4355942A (en) * 1979-07-23 1982-10-26 Rolfe Keith O Loading and unloading apparatus for vehicles
US4509894A (en) * 1979-07-23 1985-04-09 Rolfe Keith O Loading and unloading apparatus for a vehicle
US4930973A (en) * 1989-03-30 1990-06-05 Waltco Truck Equipment Co., Inc. Tiltable tailgate lift
US5941677A (en) * 1994-07-26 1999-08-24 Eco Global Patents B.V. Loading platform
US10415296B2 (en) * 2014-08-22 2019-09-17 Bayerische Motoren Werke Aktiengesellschaft Motor vehicle having an automatically controllable rear-flap assembly

Also Published As

Publication number Publication date
FI52048B (fi) 1977-02-28
DE2051286A1 (de) 1971-04-29
SE336559B (fi) 1971-07-05
FI52048C (fi) 1977-06-10
DK126315B (da) 1973-07-02

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