US3762755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hoisting accessory
Assignee: Individual
•
Filing: 1971-06-21
•
Granted: 1973-10-02
•
Expires: 1991-06-21
Abstract
Abstract An apparatus for use in hoisting heavy loads onto floors within an erected frame of a building by a lift line incorporates an elongated frame mounted for longitudinal movement on a trolley and having a counterweight attached to one end portion thereof and a load supporting arrangement to the opposite end portion. The lift line is secured to the trolley, which is selectively positioned longitudinally along the elongated frame to balance the frame, the counterweight and the load, thereby to facilitate lifting of the load to a desired height. Once the load has been lifted, the frame may be laterally moved to position the load over a receiving surface, and then the position of the trolley may be adjusted along the frame to obtain a desired imbalance between the load and the counterweight for tilting the frame from a horizontal disposition to manipulate the load around ledges and the like and to facilitate the removal of the load from the load supporting device and onto the receiving surface.
Inventors
- 👤 K Saether
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:59
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/105; B66C1/22; B66C1/24
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
240 words
An apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a selected position along said frame; powered means for selectively moving said line attachment means longitudinally along said elongated frame and comprising at least one pair of sprockets with one sprocket of the pair being journaled at one end portion of said elongated frame and the other of the sprockets journaled at the opposite end portion of the frame; a length of chain having opposite ends thereof anchored respectively to opposite ends of said line attachment means and being trained around said pair of sprockets; and reversible motor means selectively driving one of the pair of said sprockets to position said line attachment means at a selected position along said frame; whereby said line attachment means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means.
Claim 2
Independent Claim
240 words
An apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a selected position along said frame; powered means for selectively moving said line attachment means longitudinally along said elongated frame and comprising at least one pair of sprockets with one sprocket of the pair being journaled at one end portion of said elongated frame and the other of the sprockets journaled at the opposite end portion of the frame; a length of chain having opposite ends thereof anchored respectively to opposite ends of said line attachment means and being trained around said pair of sprockets; and reversible motor means selectively driving one of the pair of said sprockets to position said line attachment means at a selected position along said frame; whereby said line attachment means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means.
Claim 3
Dependent Claim
38 words
Apparatus according to claim 1, including means for controlling operation of said motor means and comprising manually actuated means operatively connected with said motor means and mounted conveniently accessible on said frame adjacent to said load supporting means.
Claim 4
Dependent Claim
27 words
Apparatus according to claim 1, including means supporting said motor means under said end portion of said frame, and means supporting said counterweight below said motor means.
Claim 5
Dependent Claim
36 words
Apparatus according to claim 1, said load supporting means comprising a frame attached to and depending from said opposite end portion of said frame, and interchangeable load engaging means detachably secured to said load supporting frame.
Claim 6
Dependent Claim
25 words
The apparatus of claim 1, said powered means comprising a worm gear transmission driven by said motor means and drivingly connected to said driven sprocket.
Claim 7
Dependent Claim
33 words
The apparatus of claim 1, said holding means comprising a brake normally preventing movement of said driven sprocket and releasing to enable movement of said driven sprocket whenever said motor means is operated.
Claim 8
Dependent Claim
49 words
The apparatus of claim 1, comprising control means for controlling the operation of said motor means and comprising manually actuated switch means operatively connected to said motor means; a control arm attached to said frame adjacent said load supporting means, said switch means being mounted on said control arm.
Claim 9
Independent Claim
261 words
An apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a selected position along said frame; said holding means comprising a closed hydraulic circuit containing a hydraulic fluid; said circuit including an elongated hollow cylinder carried on said frame and having an interior cylindrical wall; a piston received in said cylinder for slidable movement axially therewithin; hydraulic control means controlling the flow of the hydraulic fluid through said circuit to control the movement of said piston within said cylinder; a pair of sheaves, with respective ones of said sheaves of the pair being journaled at opposite end portions of said elongated frame; and cable means trained around said sheaves and connecting opposite ends of said piston to opposite ends of said attachment means so that said piston slides axially within said cylinder with movement of said line attachment means along said frame; whereby said line attachment means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means.
Claim 10
Independent Claim
261 words
An apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a selected position along said frame; said holding means comprising a closed hydraulic circuit containing a hydraulic fluid; said circuit including an elongated hollow cylinder carried on said frame and having an interior cylindrical wall; a piston received in said cylinder for slidable movement axially therewithin; hydraulic control means controlling the flow of the hydraulic fluid through said circuit to control the movement of said piston within said cylinder; a pair of sheaves, with respective ones of said sheaves of the pair being journaled at opposite end portions of said elongated frame; and cable means trained around said sheaves and connecting opposite ends of said piston to opposite ends of said attachment means so that said piston slides axially within said cylinder with movement of said line attachment means along said frame; whereby said line attachment means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means.
Claim 11
Dependent Claim
33 words
Apparatus according to claim 8, said hydraulic control means comprising a hydraulic valve mounted adjacent to said opposite end portion of said frame, and including means mounting the valve for convenient manual operation.
Claim 12
Dependent Claim
41 words
Apparatus according to claim 9, including a control arm pivotally mounted at one end to said frame at said opposite end portion thereof, and a handle at the opposite end of said arm, said valve being mounted adjacent to said handle.
Claim 13
Independent Claim
178 words
An apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a selected position along said frame; a manually engageable control arm pivotally attached at one end to said frame adjacent to said load supporting means and having manipulating means at its opposite end; and means mounted on said arm adjacent to said opposite end for controlling said holding means; whereby said line attachment means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means.
Claim 14
Independent Claim
178 words
An apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a selected position along said frame; a manually engageable control arm pivotally attached at one end to said frame adjacent to said load supporting means and having manipulating means at its opposite end; and means mounted on said arm adjacent to said opposite end for controlling said holding means; whereby said line attachment means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means.
Claim 15
Dependent Claim
57 words
Apparatus according to claim 11, said control arm being pivotally movable between a horizontal position and a vertical position, means retaining said control arm in a selected one of said positions, and said manipulating means comprising a handle attached to said member to enable manual operation of the control arm to control the position of said frame.
Claim 16
Dependent Claim
44 words
Apparatus according to claim 11, said holding means including an electrical motor and brake means operatively connected with said line attachment means, and said means for controlling said holding means comprising electrical switch means mounted adjacent to said opposite end of said control arm.
Claim 17
Dependent Claim
27 words
Apparatus according to claim 11, wherein said holding means include a hydraulic circuit, and said means for controlling said holding means include manually operable control valve means.
Claim 18
Independent Claim
112 words
An apparatus for hoisting loads with a lift line: an elongated frame having track means extending longitudinally therealong; counterweight means carried by said frame at one end portion thereof; load supporting means carried by said frame at an opposite end portion thereof; a trolley engaging and movable along said track means and having means thereon for attachment of a lift line; and means for controlling movement of said trolley along said track means including flexible element means attached to said trolley and extending in opposite longitudinal directions therefrom along said frame means and rotary means carried by said end portions of the frame means on which said flexible element means are trained.
Claim 19
Independent Claim
112 words
An apparatus for hoisting loads with a lift line: an elongated frame having track means extending longitudinally therealong; counterweight means carried by said frame at one end portion thereof; load supporting means carried by said frame at an opposite end portion thereof; a trolley engaging and movable along said track means and having means thereon for attachment of a lift line; and means for controlling movement of said trolley along said track means including flexible element means attached to said trolley and extending in opposite longitudinal directions therefrom along said frame means and rotary means carried by said end portions of the frame means on which said flexible element means are trained.
Claim 20
Dependent Claim
33 words
Apparatus according to claim 15, including a motor carried by said frame and connected with said flexible element means for operating the same to control the position of said trolley along said track.
Claim 21
Dependent Claim
62 words
Apparatus according to claim 15, wherein said trolley is gravitationally movable to different positions along said track by tilting said frame and permitting the frame to shift gravitationally relative to the trolley, and means for holding said trolley in a selected position along said track by controlling said flexible element means to prevent gravitational shifting of the frame relative to the trolley.
Claim 22
Dependent Claim
140 words
In an apparatus for hoisting loads with a lift line: a single central elongated body beam comprising a longitudinally extending vertical web having an upper edge from which respective opposite laterally extending flanges project along the length of the web providing downwardly facing rails; counterweight means carried by one end of said beam; load supporting means carried by an opposite end portion of said beam; a trolley mounted on said beam and having means in vertical alignment over said web for attaching a lift line to the trolley and having wheels engaging said rails for adjustable movement of the trolley along said beam between said counterweight means and said load supporting means; holding means for retaining said trolley at a selected position along said beam rails; and an elongated reinforcing member secured to and along said beam on said flanges.
Claim 23
Dependent Claim
140 words
In an apparatus for hoisting loads with a lift line: a single central elongated body beam comprising a longitudinally extending vertical web having an upper edge from which respective opposite laterally extending flanges project along the length of the web providing downwardly facing rails; counterweight means carried by one end of said beam; load supporting means carried by an opposite end portion of said beam; a trolley mounted on said beam and having means in vertical alignment over said web for attaching a lift line to the trolley and having wheels engaging said rails for adjustable movement of the trolley along said beam between said counterweight means and said load supporting means; holding means for retaining said trolley at a selected position along said beam rails; and an elongated reinforcing member secured to and along said beam on said flanges.
Claim 24
Dependent Claim
34 words
Apparatus according to claim 18, said elongated member comprising an inverted channel having a pair of spaced depending flanges secured to said beam flanges in reinforcing relation to said rails and forming a raceway.
Claim 25
Independent Claim
98 words
A method of elevating and maneuvering loads with a lift line comprising: supporting a load at one end of an elongated frame having a counterweight fixed at an opposite end thereof; attaching a lift line to a trolley engaged movably with rail means extending longitudinally along said frame; effecting free gravitational longitudinal movement of the frame relative to said trolley comprising tilting the frame in the direction in which it is desired to have the frame move; and selectively holding the trolley and the frame against relative movement in any adjusted relative position of the trolley and frame.
Claim 26
Independent Claim
98 words
A method of elevating and maneuvering loads with a lift line comprising: supporting a load at one end of an elongated frame having a counterweight fixed at an opposite end thereof; attaching a lift line to a trolley engaged movably with rail means extending longitudinally along said frame; effecting free gravitational longitudinal movement of the frame relative to said trolley comprising tilting the frame in the direction in which it is desired to have the frame move; and selectively holding the trolley and the frame against relative movement in any adjusted relative position of the trolley and frame.
Claim 27
Dependent Claim
189 words
In apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame comprising a single beam member; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a select position along said frame, whereby said line attachments means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means; said load supporting means comprising a single arm rigidly attached to said frame, interchangeable load engaging means comprising a retangular frame having vertical side bars and horizontal upper and lower bars; and means detachable securing said load engaging means to upper and lower portions of said load supporting means.
Claim 28
Dependent Claim
189 words
In apparatus for hoisting loads with a lift line, the apparatus comprising: an elongated frame comprising a single beam member; counterweight means attached to said frame at one end portion thereof; load supporting means attached to said frame at an opposite end portion thereof; line attachment means for attaching a lift line to said frame and being adjustably movable along said frame between said load supporting means and said counterweight means; holding means retaining said line attachment means at a select position along said frame, whereby said line attachments means may be positioned selectively along said frame to balance a load and said counterweight to facilitate lifting the load and when lifted to a desired height said line attachment means may be adjusted to an unbalanced position to assist in the removal of the load from said load supporting means; said load supporting means comprising a single arm rigidly attached to said frame, interchangeable load engaging means comprising a retangular frame having vertical side bars and horizontal upper and lower bars; and means detachable securing said load engaging means to upper and lower portions of said load supporting means.
Claim 29
Dependent Claim
206 words
In apparatus for hoisting loads with a lift line; an elongated body beam having track means longitudinally therealong; counterweight means carried at one end portion of said beam; load supporting means carried by the opposite end portion of said beam; a line attachment trolley engaging said track means for running therealong and having upwardly extending means for attaching a lift line to the trolley; means carried by said beam and operatively connected wtih said trolley to control movement of the trolley adjustably along said track means; means carried by said opposite end portion of the beam adjacent to said load supporting means for controlling operation of said means for controlling movement of the trolley for selectively positioning said trolley along said track means to balance a load and said counterweight to facilitate lifting the load and for adjusting said trolley along the track to effect an unbalanced position of the load relative to the counterweight means as desired to asSist in maneuvering a load carried by said load supporting mean; and a handle means carried by and projecting from said opposite end portion of said beam, said means for controlling operations of said means for controlling movement of the trolley being mounted on said handle means.
Claim 30
Dependent Claim
206 words
In apparatus for hoisting loads with a lift line; an elongated body beam having track means longitudinally therealong; counterweight means carried at one end portion of said beam; load supporting means carried by the opposite end portion of said beam; a line attachment trolley engaging said track means for running therealong and having upwardly extending means for attaching a lift line to the trolley; means carried by said beam and operatively connected wtih said trolley to control movement of the trolley adjustably along said track means; means carried by said opposite end portion of the beam adjacent to said load supporting means for controlling operation of said means for controlling movement of the trolley for selectively positioning said trolley along said track means to balance a load and said counterweight to facilitate lifting the load and for adjusting said trolley along the track to effect an unbalanced position of the load relative to the counterweight means as desired to asSist in maneuvering a load carried by said load supporting mean; and a handle means carried by and projecting from said opposite end portion of said beam, said means for controlling operations of said means for controlling movement of the trolley being mounted on said handle means.
Claim 31
Dependent Claim
204 words
In apparatus fo hoisting loads with a lift line; an elongated body beam having track means longitudinally therealong; counterweight means carried at one end portion of said beam; load supporting means carried by the opposite end portion of said beam; a line attachment trolley engaging said track means for running therealong and having upwardly extending means for attaching a lift line to the trolley; means carried by said beam and operatively connected with said trolley to control movement of the trolley adjustably along said track means, said means including flexible element means attached to respective opposite ends of said trolley and rotary means carried by said end portions of said beam over which said flexible element means are trained; and means carried by said opposite end portion of the beam adjacent to said load supporting means for controlling operation of said means for controlling movement of the trolley for selectively positioning said trolley along said track means to balance a load and said counterweight to facilitate lifting the load and for adjusting said trolley along the track to effect an unbalanced position of the load relative to the counterweight means as desired to assist in maneuvering a load carried by said load supporting means.
Claim 32
Dependent Claim
204 words
In apparatus fo hoisting loads with a lift line; an elongated body beam having track means longitudinally therealong; counterweight means carried at one end portion of said beam; load supporting means carried by the opposite end portion of said beam; a line attachment trolley engaging said track means for running therealong and having upwardly extending means for attaching a lift line to the trolley; means carried by said beam and operatively connected with said trolley to control movement of the trolley adjustably along said track means, said means including flexible element means attached to respective opposite ends of said trolley and rotary means carried by said end portions of said beam over which said flexible element means are trained; and means carried by said opposite end portion of the beam adjacent to said load supporting means for controlling operation of said means for controlling movement of the trolley for selectively positioning said trolley along said track means to balance a load and said counterweight to facilitate lifting the load and for adjusting said trolley along the track to effect an unbalanced position of the load relative to the counterweight means as desired to assist in maneuvering a load carried by said load supporting means.
Claim 33
Dependent Claim
33 words
Apparatus according to claim 23, including a motor carried by one of said beam end portions and operatively connected with the rotary means at the end portion of the beam carrying said motor.
Claim 34
Dependent Claim
78 words
Apparatus according to claim 23, including an elongated hollow cylinder mounted longitudinally along said beam, a member reciprocably movable within said cylinder, said flexible element means connected to said reciprocable member and extending beyond the respective opposite ends of said cylinder and over said rotary means, and said means for controlling the position controlling means controlling the position of said reciprocable member in said cylinder and thereby controlling the position of the trolley through said flexible element means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |