US3823783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power pitching and angling bullgrader
Assignee: International Motors LLC
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Filing: 1973-01-29
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Granted: 1974-07-16
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Expires: 1993-01-29
Abstract
Abstract Power adjusted bulldozing attachment for a tractor having a Cframe and a bullgrading blade thereon capable of pitching, tilting, and single and double angle angling. An intermediate region of the blade has a universal mounting to the front of the C-frame. Pairs of strut members incorporating power units are connected to the end sections of the blade and to the legs of the C-frame for pitching and tilting the blade. The blade is angled by shifting the struts by means of power pistons on the legs of the C-frame. Piston locks fix the struts at locking points on the frame legs so that the blade, formed of bisected sections, can have the sections swung similarly to single angles or oppositely for double angle contouring.
Inventors
- 👤 R Luedtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:34
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7609; E02F3/7618
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
289 words
An outside-arm bulldozer assembly of a supporting C-frame for attachment to a dozer tractor, and a supported blade thereon having opposite end sections, and having an intermediate section of bisection interconnecting the opposite end sections at their inner end; said blade having blade locking means cooperating with the Cframe legs, and lower struts with ends having the locking means disposed between the strut ends and the C-frame legs and lockable by the blade locking means to the C-frame legs; said blade having lower end sections and, at the lower end sections, having joints connecting same to the lower struts which, when the strut ends are locked to points on the C-frame legs, establish locked positions of the blade; said blade having blade upper end sections and having upper struts connected between said lower strut lockable ends and the blade upper end sections; said blade having a lower intermediate section and having, at its bisection, a multiple joint connecting same at the lower intermediate section to the C-frame and defining, inter alia, a pitch axis extending horizontally crosswise, and a generally upright hinging axis; the joint at the intermediate section of the blade and at each lower end section characterized by universal connections; said upper struts having simultaneously extensibly powered and simultaneously foreshortenably powered means connected to the upper struts to pitch the blade about the pitch axis between selected suction angles; said blade having simultaneously oppositely powered and simultaneously similarly powered extensible and foreshortenable angling means provided on the C-frame legs and connected to the blade selectively to angle same in a direction at one blade angle, or to double angle contouring afforded by diagonally independently angling the blade end sections to locked positions about the upright hinging axis.
Claim 2
Dependent Claim
289 words
An outside-arm bulldozer assembly of a supporting C-frame for attachment to a dozer tractor, and a supported blade thereon having opposite end sections, and having an intermediate section of bisection interconnecting the opposite end sections at their inner end; said blade having blade locking means cooperating with the Cframe legs, and lower struts with ends having the locking means disposed between the strut ends and the C-frame legs and lockable by the blade locking means to the C-frame legs; said blade having lower end sections and, at the lower end sections, having joints connecting same to the lower struts which, when the strut ends are locked to points on the C-frame legs, establish locked positions of the blade; said blade having blade upper end sections and having upper struts connected between said lower strut lockable ends and the blade upper end sections; said blade having a lower intermediate section and having, at its bisection, a multiple joint connecting same at the lower intermediate section to the C-frame and defining, inter alia, a pitch axis extending horizontally crosswise, and a generally upright hinging axis; the joint at the intermediate section of the blade and at each lower end section characterized by universal connections; said upper struts having simultaneously extensibly powered and simultaneously foreshortenably powered means connected to the upper struts to pitch the blade about the pitch axis between selected suction angles; said blade having simultaneously oppositely powered and simultaneously similarly powered extensible and foreshortenable angling means provided on the C-frame legs and connected to the blade selectively to angle same in a direction at one blade angle, or to double angle contouring afforded by diagonally independently angling the blade end sections to locked positions about the upright hinging axis.
Claim 3
Dependent Claim
228 words
An outside arm bulldozer attachment for a tractor, comprising: a C-frame with an intermediate region at the front and two spaced legs joined thereby and terminating in rear ends, said rear ends having means of pivotal connection to opposite outer sides of the tractor; a bisected blade extending across the front of the C-frame; a universal connection between the intermediate region of the C-frame and an intermediate region of the blade at the lower part of its bisection, and universally interconnecting the two regions about mutually perpendicular axes, said bisection defining a generally upright hinge axis between end sections of the blade; and a pair of adjustable strut means for respectively pitching and tilting the blade about the perpendicular axes of the universal connection, one strut means being connected with one end section of the blade and one leg of the C-frame, the other strut means being connected with the other end section of the blade and strut other leg of the C-frame, the connections of said one strut means and said other strut means, for purposes of angling of the blade, having means shiftably mounting same on the legs of the C-frame so as to be shiftable along the legs of the C-frame in opposite directions to angle the blade for single angle contouring and in the same direction to angle the blade for double angle contouring.
Claim 4
Dependent Claim
228 words
An outside arm bulldozer attachment for a tractor, comprising: a C-frame with an intermediate region at the front and two spaced legs joined thereby and terminating in rear ends, said rear ends having means of pivotal connection to opposite outer sides of the tractor; a bisected blade extending across the front of the C-frame; a universal connection between the intermediate region of the C-frame and an intermediate region of the blade at the lower part of its bisection, and universally interconnecting the two regions about mutually perpendicular axes, said bisection defining a generally upright hinge axis between end sections of the blade; and a pair of adjustable strut means for respectively pitching and tilting the blade about the perpendicular axes of the universal connection, one strut means being connected with one end section of the blade and one leg of the C-frame, the other strut means being connected with the other end section of the blade and strut other leg of the C-frame, the connections of said one strut means and said other strut means, for purposes of angling of the blade, having means shiftably mounting same on the legs of the C-frame so as to be shiftable along the legs of the C-frame in opposite directions to angle the blade for single angle contouring and in the same direction to angle the blade for double angle contouring.
Claim 5
Dependent Claim
278 words
The combination of a supporting C-frame, for attachment to a bullgrading tractor, and a bisected blade supported thereby; said blade having blade locking means cooperating with the C-frame legs, and lower struts with ends having the locking means disposed between the strut ends and the C-frame legs and lockable by the blade locking means to the C-frame legs; said blade having lower end sections and, at the lower end sections, having joints connecting same to the lower struts which, when the strut ends are locked tO points on the C-frame legs, establish locked positions of the blade; said blade having blade upper end sections and having tilt struts connected between said lower strut lockable ends and the blade upper end sections; said bisected blade having hinge means located intermediate the end sections thereof and defining the bisection thereof, said intermediately located hinge means having a lower joint made to the C-frame defining a: first transverse axis extending generally fore and aft, and second transverse axis extending generally horizontally crosswise; said tilt struts having oppositely coacting means included in the tilt struts to tilt the blade about the first axis between selected tilt angles; said tilt struts having similarly coacting means connected to the tilt struts to pitch the blade about the second axis between selected suction angles; said bisected blade having power means on the C-frame legs connected to the bisected blade for double angle contouring, afforded by diagonally independently angling the blade end sections about a third transverse axis located at the hinge means and extending generally upright; said lower joint and the joints at the lower end sections of the blade characterized by aligned universal connections.
Claim 6
Dependent Claim
278 words
The combination of a supporting C-frame, for attachment to a bullgrading tractor, and a bisected blade supported thereby; said blade having blade locking means cooperating with the C-frame legs, and lower struts with ends having the locking means disposed between the strut ends and the C-frame legs and lockable by the blade locking means to the C-frame legs; said blade having lower end sections and, at the lower end sections, having joints connecting same to the lower struts which, when the strut ends are locked tO points on the C-frame legs, establish locked positions of the blade; said blade having blade upper end sections and having tilt struts connected between said lower strut lockable ends and the blade upper end sections; said bisected blade having hinge means located intermediate the end sections thereof and defining the bisection thereof, said intermediately located hinge means having a lower joint made to the C-frame defining a: first transverse axis extending generally fore and aft, and second transverse axis extending generally horizontally crosswise; said tilt struts having oppositely coacting means included in the tilt struts to tilt the blade about the first axis between selected tilt angles; said tilt struts having similarly coacting means connected to the tilt struts to pitch the blade about the second axis between selected suction angles; said bisected blade having power means on the C-frame legs connected to the bisected blade for double angle contouring, afforded by diagonally independently angling the blade end sections about a third transverse axis located at the hinge means and extending generally upright; said lower joint and the joints at the lower end sections of the blade characterized by aligned universal connections.
Claim 7
Dependent Claim
300 words
A frame and blade assembly for an outside arm dozer comprising a mounting C-frame and a blade mounted thereon, said frame and blade assembly characterized by: the blade having blade locking means cooperating with the C-frame legs, and lower struts with ends having the locking means disposed between the strut ends and the C-frame legs and lockable by the blade locking means to the C-frame legs; the blade having lower end sections and, at the lower end sections, having joints connecting same to the lower struts which, when the strut ends are locked to points on the C-frame legs, establish locked positions of the blade; the blade having tilt struts connected by joints to and between the lower strut lockable ends and the blade upper end sections; the blade having at a bisected intermediate section a joint universally connecting same to the front of the C-frame, and defining a first horizontal axis extending fore and aft and a second horizontal axis in an athwart position of the C-frame, extending crosswise; the besection defining a generally upright hinge axis at the intermediate blade section; said blade having power means provided on the C-frame legs and connected to the blade for angling same about the hinge axis to single angle locked positions and for independently diagonally angling the end sections to double angle locked positions; said tilt struts having oppositely coacting cylinders operatively associated with the first horizontal axis and connected to the tilt struts to tilt the blade about the first axis between selected tilt angles; the joints at the intermediate and lower end sections of the blade characterized by universal connections; and similarly coacting cylinders operatively associated with the second horizontal axis and connected to the tilt struts to pitch the blade about the second axis between selected suction angles.
Claim 8
Dependent Claim
300 words
A frame and blade assembly for an outside arm dozer comprising a mounting C-frame and a blade mounted thereon, said frame and blade assembly characterized by: the blade having blade locking means cooperating with the C-frame legs, and lower struts with ends having the locking means disposed between the strut ends and the C-frame legs and lockable by the blade locking means to the C-frame legs; the blade having lower end sections and, at the lower end sections, having joints connecting same to the lower struts which, when the strut ends are locked to points on the C-frame legs, establish locked positions of the blade; the blade having tilt struts connected by joints to and between the lower strut lockable ends and the blade upper end sections; the blade having at a bisected intermediate section a joint universally connecting same to the front of the C-frame, and defining a first horizontal axis extending fore and aft and a second horizontal axis in an athwart position of the C-frame, extending crosswise; the besection defining a generally upright hinge axis at the intermediate blade section; said blade having power means provided on the C-frame legs and connected to the blade for angling same about the hinge axis to single angle locked positions and for independently diagonally angling the end sections to double angle locked positions; said tilt struts having oppositely coacting cylinders operatively associated with the first horizontal axis and connected to the tilt struts to tilt the blade about the first axis between selected tilt angles; the joints at the intermediate and lower end sections of the blade characterized by universal connections; and similarly coacting cylinders operatively associated with the second horizontal axis and connected to the tilt struts to pitch the blade about the second axis between selected suction angles.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |