US3969035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slip from paving machine
Assignee: PRECISION PAVING PRODUCTS CORP
•
Filing: 1974-02-28
•
Granted: 1976-07-13
•
Expires: 1994-02-28
Abstract
Abstract A slip form paving machine for forming curbs, gutters, barriers and other structures in a continuous process. The machine is mounted on three steerable and individually powered wheels. The wheels are mounted on parallel linkages so that the frame can be raised and lowered relative to the wheels without changing the orientation of the steering axis, to permit and insure precise control. A wide variety of paving forms of different heights and widths can be used without modifying the machine. The engine and other heavy components are located in relation to the wheel mounting so that the frame is balanced and stable with the three wheel support. The operational components of the machine including a loading conveyor are stored within a standard frame width so that the unit can be transported over the road without special permits.
Inventors
- 👤 Frederick J. Silbernagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:52
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/48; E01C19/4886; E01C19/4893
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
365 words
A mobile machine for slip form paving using a paving material to form a structure comprising a frame member having a leading end and a trailing end and lateral side edges, said frame member having a load conveyor mounted thereon, and means to mount a slip form on said frame for forming said paving material into the desired structure as the machine is moved forwardly, means mounting said frame for movement along a surface comprising a pair of forward surface engaging members mounted to said frame member adjacent the leading end thereof when moving in normal direction of movement for paving, means mounting said pair of surface engaging members closely adjacent the side edges and within the periphery of said frame member, a single third surface engaging member, means mounting said single surface engaging member with respect to said frame member closely adjacent one side thereof and within the frame periphery and to normally move substantially in the track of one of said forward surface engaging members as the machine moves in said normal direction of movement, and positioned adjacent to the rear of said frame member and laterally displaced from a slip form mounted on said machine, said means to mount a slip form beig positioned to trail behind the other of said forward surface engaging members, and power means mounted on said frame for powering said surface engaging members for propelling said machine including an engine positioned adjacent the forward end of said frame member between and at least partially overlying said forward surface engaging members to balance and stablize said machine, said means mounting said surface engaging members including separate movable parallel linkages for each surface engaging member, each separate parallel linkage comprising a pair of links having first ends pivotally mounted with respect to said frame member about axes positioned at fixed locations on said frame member, said links having second ends pivotally mounted to its respective surface engaging member with the links in parallel relationship about axes parallel to the spaced axes, whereby the surface engaging members remain oriented with respect to a vertical plane as the parallel linkages are moved to facilitate steering movement of the surface engaging members.
Claim 2
Dependent Claim
365 words
A mobile machine for slip form paving using a paving material to form a structure comprising a frame member having a leading end and a trailing end and lateral side edges, said frame member having a load conveyor mounted thereon, and means to mount a slip form on said frame for forming said paving material into the desired structure as the machine is moved forwardly, means mounting said frame for movement along a surface comprising a pair of forward surface engaging members mounted to said frame member adjacent the leading end thereof when moving in normal direction of movement for paving, means mounting said pair of surface engaging members closely adjacent the side edges and within the periphery of said frame member, a single third surface engaging member, means mounting said single surface engaging member with respect to said frame member closely adjacent one side thereof and within the frame periphery and to normally move substantially in the track of one of said forward surface engaging members as the machine moves in said normal direction of movement, and positioned adjacent to the rear of said frame member and laterally displaced from a slip form mounted on said machine, said means to mount a slip form beig positioned to trail behind the other of said forward surface engaging members, and power means mounted on said frame for powering said surface engaging members for propelling said machine including an engine positioned adjacent the forward end of said frame member between and at least partially overlying said forward surface engaging members to balance and stablize said machine, said means mounting said surface engaging members including separate movable parallel linkages for each surface engaging member, each separate parallel linkage comprising a pair of links having first ends pivotally mounted with respect to said frame member about axes positioned at fixed locations on said frame member, said links having second ends pivotally mounted to its respective surface engaging member with the links in parallel relationship about axes parallel to the spaced axes, whereby the surface engaging members remain oriented with respect to a vertical plane as the parallel linkages are moved to facilitate steering movement of the surface engaging members.
Claim 3
Dependent Claim
43 words
The combination as specified in claim 1 said means mounting said surface engaging members to said frame member comprising means to permit pivoting steering movement of each of said surface engaging members relative to its associated parallel linkage about substantially upright steering axes.
Claim 4
Dependent Claim
27 words
The combination as specified in claim 2 and means to power said surface engaging members individually, comprising individual motor means driving each of said surface engaging members.
Claim 5
Dependent Claim
90 words
The combination as specified in claim 3 wherein said means mounting said surface engaging members include substantially upright legs, and said surface engaging members each comprise first surface engaging members mounted on one of said legs, removable means to mount each of said surface engaging members to one of said legs including a nonrotatable hub fixed to an associated leg and a second surface engaging member having a hub interchangeable with said nonrotatable hub adapted to be mounted on said associated leg in place of a first surface engaging member.
Claim 6
Dependent Claim
41 words
The combination as specified in claim 4, wherein said first surface engaging members comprise wheel members, and said second surface engaging members comprise crawler track assemblies, and interchangeable power means for driving either said wheel members or said crawler track assemblies.
Claim 7
Dependent Claim
130 words
The combination as specified in claim 2 and power means for controlling said surface engaging members about said steering axes comprising a pair of fluid power cylinders for said pair of forward surface engaging members, said pair of fluid power cylinders being series connected so that when one of said pair of fluid power cylinders is extended the other cylinder of said pair is retracted to move said forward surface engaging members in the same direction about the steering axes, means to sense differential in position of said forward surface engaging members with respect to a reference about said steering axes, and separate fluid power control means responsive to said means to sense to provide make-up fluid to correct for incorrect relative steering positions between said forward surface engaging members.
Claim 8
Dependent Claim
39 words
The combination as specified in claim 6 and separate power means to regulate said third surface engaging member about its steering axis comprising a separate fluid power cylinder, and separate control means for controlling said separate fluid power cylinder.
Claim 9
Dependent Claim
57 words
The combination as specified in claim 7 wherein said control means for said fluid power cylinders include servo valve means, and sensor means for controlling said servo valve means, a reference line member, said sensor means being positioned at spaced locations along the length of said frame member and having elements to engage said reference line member.
Claim 10
Dependent Claim
121 words
The mobile machine as claimed in claim 1 wherein each of said surface engaging members used for steering includes a control bracket, the second ends of the links for the associated surface engaging member being pivotally connected to the associated control bracket, and means to permit steering movement including means to pivotally mount the associated surface engaging member to its associated control bracket about a substantially upright steering axis, and power means mounted between said frame member and each of said control brackets for moving the associated parallel linkage and the attached control bracket relative to said frame member, said upright steering axis being not substantially changed in orientation with respect to the vertical plane as said power means are operated.
Claim 11
Dependent Claim
63 words
The combination as specified in claim 9 wherein said power means for regulating movement of said frame member with respect to said surface engaging members through said parallel linkages comprises fluid powered cylinders, and control means for said fluid power cylinders including servo valve controls, and sensor means for sensing the position of said frame member with respect to a desired grade level.
Claim 12
Dependent Claim
99 words
The combination as specified in claim 1 and means to mount said load conveyor for movement laterally to said frame member, said means to mount said load conveyor including a pair of spaced structural support members extending in lateral direction of said frame member and forming a portion thereof, means to support said load conveyor for movement along said support members from a retracted position wherein it is substantially between the lateral side edges of said frame member, to a second position wherein one end of said load conveyor extends laterally from said frame member for receiving paving material.
Claim 13
Dependent Claim
91 words
The combination as specified in claim 11 wherein said means to support said load conveyor for movement along said support member comprises cam track means, and power means to move said load conveyor along said cam track means from its retracted position wherein the load conveyor is substantially horizontal to the second position wherein an end portion of the load conveyor extends laterally from said frame member, and the end portion of said load conveyor extending laterally from said frame member is lower than the opposite end of said load conveyor.
Claim 14
Dependent Claim
43 words
The combination as specified in claim 1 and a hood member pivotally mounted to said frame member, and being of size to cover said power means, said hood member being pivotally movable to a position wherein said power means is accessible for service.
Claim 15
Dependent Claim
94 words
The combination as specified in claim 13 and an operators console mounted on said hood member, said console being operated by an operator positioned between one end of said hood member and a reference side of said frame member, said load conveyor being positioned immediately rearwardly of said hood member, and a slip form mounted on the frame member being positioned adjacent the reference side of the frame member and extending in rearwardly direction from said load conveyor, whereby said operator can view the operable components of said machine while positioned adjacent said console.
Claim 16
Dependent Claim
237 words
A machine for forming members of a paving material using a slip form, said machine including a frame assembly, means to mount and support said frame assembly for movement along a supporting surface, said frame assembly including outer peripheral members defining a lateral side to side frame width and a frame length in a longitudinal direction, means to mount a slip form member on said machine, a load conveyor for said machine, said load conveyor having a unitary nonfoldable framework, and means to mount said load conveyor on said frame assembly comprising a pair of structural support members spaced apart in longitudinal direction of said frame assembly and extending side to side transversely of said frame assembly, said support member defining an opening at one lateral side of said frame assembly, cam track means defined on said support members, and cooperating roller means on said load conveyor movably mounted in said cam track means for guiding movement of said load conveyor, said load conveyor being movable from a first retracted position wherein a first end of said load conveyor closes the opening at one lateral side of said frame assembly to a second working position wherein said first end of said load conveyor extends laterally outwardly from said frame assembly for receiving paving material, and a second end of said load conveyor is positioned to deposit paving material carried by said load conveyor in a desired location.
Claim 17
Dependent Claim
237 words
A machine for forming members of a paving material using a slip form, said machine including a frame assembly, means to mount and support said frame assembly for movement along a supporting surface, said frame assembly including outer peripheral members defining a lateral side to side frame width and a frame length in a longitudinal direction, means to mount a slip form member on said machine, a load conveyor for said machine, said load conveyor having a unitary nonfoldable framework, and means to mount said load conveyor on said frame assembly comprising a pair of structural support members spaced apart in longitudinal direction of said frame assembly and extending side to side transversely of said frame assembly, said support member defining an opening at one lateral side of said frame assembly, cam track means defined on said support members, and cooperating roller means on said load conveyor movably mounted in said cam track means for guiding movement of said load conveyor, said load conveyor being movable from a first retracted position wherein a first end of said load conveyor closes the opening at one lateral side of said frame assembly to a second working position wherein said first end of said load conveyor extends laterally outwardly from said frame assembly for receiving paving material, and a second end of said load conveyor is positioned to deposit paving material carried by said load conveyor in a desired location.
Claim 18
Dependent Claim
112 words
The combination as specified in claim 15 wherein said cam track means comprises a substantially horizontal portion and an inclined track portion adjacent the opening defined in said frame, and said roller means include first and second rollers spaced lateral direction of said frame assembly, said first roller being most closely adjacent said first end of said load conveyor and moving downwardly on the inclined portion of said cam track means while said second roller remains in the substantially horizontal portion of said cam track means to cause said load conveyor to incline from said first end upwardly toward said second end when said load conveyor is in said second working position.
Claim 19
Dependent Claim
56 words
The machine of claim 15 wherein said means to mount and support said frame assembly comprises three individual ground engaging members, two of said ground engaging members being positioned adjacent the leading end of said frame assembly, and the third member being positioned adjacent the trailing end and adjacent one lateral side of said frame assembly.
Claim 20
Dependent Claim
48 words
The combination as specified in claim 17 and a power source comprising an engine and other power components mounted on said frame assembly adjacent the leading end thereof to distribute the weight thereof substantially onto said two ground engaging members adjacent the leading end of said frame assembly.
Claim 21
Dependent Claim
51 words
The combination as specified in claim 15 wherein said frame assembly includes structural support members comprising wall means defining a fuel tank and an auxiliary water tank to the rear of said load conveyor and in a position to provide when filled, counterweight for a slip form used with said machine.
Claim 22
Dependent Claim
323 words
A mobile machine for slip form paving using a paving material to form a structural comprising a frame member having a leading end and a trailing end and lateral side edges, said frame member having a load conveyor mounted thereon, and means to mount a slip form on said frame for forming said paving material into the desired structure as the machine is moved forwardly, means mounting said frame for movement along a surface comprising a pair of forward surface engaging members mounted to said frame member adjacent the leading end thereof when moving in normal direction of movement for paving, means mounting said pair of surface engaging members adjacent the side edges and within the periphery of said frame member, a single third surface engaging member, means mounting said single surface engaging member with respect to said frame member closely adjacent one side thereof and to normally move substantially in the track of one of said forward surface engaging members as the machine moves in said normal direction movement, and positioned adjacent to the rear of said frame member and laterally displaced from a slip form mounted on said machine, said means to mount a slip form being positioned to trail behind the other of said forward surface engaging members, and power means mounted on said frame for powering said surface engaging members for propelling said machine including an engine positioned adjacent the forward end of said frame member between and at least partially overlying said forward surface engaging members to tend to balance and stablize said machine, said frame including structural support members comprising wall means defining a tank for holding liquid for use with said machine positioned at the rear portion of said frame member and laterally from said single third surface engaging member in direction toward a slip form mounted on said machine so the liquid in said tank provides ballast for offsetting upward force of said slip form.
Claim 23
Dependent Claim
323 words
A mobile machine for slip form paving using a paving material to form a structural comprising a frame member having a leading end and a trailing end and lateral side edges, said frame member having a load conveyor mounted thereon, and means to mount a slip form on said frame for forming said paving material into the desired structure as the machine is moved forwardly, means mounting said frame for movement along a surface comprising a pair of forward surface engaging members mounted to said frame member adjacent the leading end thereof when moving in normal direction of movement for paving, means mounting said pair of surface engaging members adjacent the side edges and within the periphery of said frame member, a single third surface engaging member, means mounting said single surface engaging member with respect to said frame member closely adjacent one side thereof and to normally move substantially in the track of one of said forward surface engaging members as the machine moves in said normal direction movement, and positioned adjacent to the rear of said frame member and laterally displaced from a slip form mounted on said machine, said means to mount a slip form being positioned to trail behind the other of said forward surface engaging members, and power means mounted on said frame for powering said surface engaging members for propelling said machine including an engine positioned adjacent the forward end of said frame member between and at least partially overlying said forward surface engaging members to tend to balance and stablize said machine, said frame including structural support members comprising wall means defining a tank for holding liquid for use with said machine positioned at the rear portion of said frame member and laterally from said single third surface engaging member in direction toward a slip form mounted on said machine so the liquid in said tank provides ballast for offsetting upward force of said slip form.
Claim 24
Dependent Claim
259 words
In a paving machine using a slip form for forming objects made of a paving material that can be poured, a frame, a plurality of ground engaging members comprising two forward ground engaging members and at least one rear ground engaging member, means mounting said frame to said ground engaging members comprising parallel linkages pivotally attached to said frame and to said ground engaging members, said rear ground engaging member being adjacent one side of the frame to provide a space for a slip form alongside the rear ground engaging member, means mounted on said frame to power at least some of said ground engaging members to drive the members to propel said frame, first power means mounted between said frame and parallel linkages to operate said parallel linkages for movement of said ground engaging members relative to said frame to lift or lower said frame, said parallel linkages including means mounting said linkages to substantially maintain the orientation of said ground engaging members with respect to a vertical reference plane as said ground engaging members are moved relative to said frame by said first power means, means individually mounting at least one of said ground engaging members about a substantially upright axis to the associated parallel linkage for steering motion with respect to its associated parallel linkage, a separate power cylinder member controlling movement of each of said ground engaging members mounted for steering motion about its associated substantially upright axis, and control means mounted on said frame for controlling the respective power cylinder means for steering movement.
Claim 25
Dependent Claim
259 words
In a paving machine using a slip form for forming objects made of a paving material that can be poured, a frame, a plurality of ground engaging members comprising two forward ground engaging members and at least one rear ground engaging member, means mounting said frame to said ground engaging members comprising parallel linkages pivotally attached to said frame and to said ground engaging members, said rear ground engaging member being adjacent one side of the frame to provide a space for a slip form alongside the rear ground engaging member, means mounted on said frame to power at least some of said ground engaging members to drive the members to propel said frame, first power means mounted between said frame and parallel linkages to operate said parallel linkages for movement of said ground engaging members relative to said frame to lift or lower said frame, said parallel linkages including means mounting said linkages to substantially maintain the orientation of said ground engaging members with respect to a vertical reference plane as said ground engaging members are moved relative to said frame by said first power means, means individually mounting at least one of said ground engaging members about a substantially upright axis to the associated parallel linkage for steering motion with respect to its associated parallel linkage, a separate power cylinder member controlling movement of each of said ground engaging members mounted for steering motion about its associated substantially upright axis, and control means mounted on said frame for controlling the respective power cylinder means for steering movement.
References Cited (Backward Citations)
US1018780A
Cited
US2660937A
Cited
US3053156A
Cited
US3130654A
Cited
US3223006A
Cited
US3158945A
Cited
US3267824A
Cited
US3258082A
Cited
US3665821A
Cited
US3710695A
Cited
US3792133A
Cited
US3844670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |