US4070939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge control for calender covering industrial belting
Assignee: Goodyear Tire and Rubber Co
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Filing: 1976-10-06
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Granted: 1978-01-31
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Expires: 1996-10-06
Abstract
Abstract An apparatus for squaring or trimming the edges of the elastomeric (uncured) cover of an industrial belt. An edge sensor is disposed to track each of the edges of a bare or uncovered carcass foward of the calender nip in which the cover is applied. Rotating trim blades for trimming excess gum from the respective edges of the covered belt are moved laterally proportionally to the algebraic sum of the deviations of the edges of the carcass from their respective ideal lines. Thus, an adequate but not excessive amount of the cover gum is provided to cover the respective edges of the carcass of the belt. The respective edge sensors are hydraulically connected with the trim blades for synchronized movement so as to maintain the described thickness of cover gum outwardly from the edges of the carcass. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.
Inventors
- 👤 Alvin W. Neumeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:18
CPC Classifications
B; B26; B26D; B26D5/00; B26D5/02; B26D5/04; B26D7/00; B26D7/0006; B26D7/26; B26D7/2628; B26D7/2635; Y; Y10; Y10T; Y10T83/00; Y10T83/141; Y10T83/525; Y10T83/531; Y10T83/538
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
236 words
In an industrial belting calender having a plurality of rolls and spaced apart side frames, a hydromechanical belt edge trimming device comprising a main support beam fixed on and extending between said side frames and extending parallel to one of said rolls, a main carriage mounted on the main beam for movement longitudinally thereof, a first allochiral pair of carriages supported on and movable longitudinally of the beam, first drive means fixed on the beam and connected to move the first pair of carriages toward and away from each other, a second allochiral pair of carriages supported on and movable longitudinally of the main carriage, second drive means fixed on the main carriage and connected to move the second pair of carriages toward and away from each other, a trimming blade supported respectively on each of the second pair of carriages, a sensor supported on and movable parallel to the beam relatively of each of the first pair of carriages for sensing respectively the edges of a carcass of an industrial belt, each sensor being capable of providing a signal proportional to the amount and direction of a deviation in location of said carcass edge, and hydromechanical drive means responsive to said signals to move each of said sensors relative to the respectively associated carriage and to move said main carriage a distance equal to one-half the algebraic sum of the deviations of said carcass edge.
Claim 2
Dependent Claim
236 words
In an industrial belting calender having a plurality of rolls and spaced apart side frames, a hydromechanical belt edge trimming device comprising a main support beam fixed on and extending between said side frames and extending parallel to one of said rolls, a main carriage mounted on the main beam for movement longitudinally thereof, a first allochiral pair of carriages supported on and movable longitudinally of the beam, first drive means fixed on the beam and connected to move the first pair of carriages toward and away from each other, a second allochiral pair of carriages supported on and movable longitudinally of the main carriage, second drive means fixed on the main carriage and connected to move the second pair of carriages toward and away from each other, a trimming blade supported respectively on each of the second pair of carriages, a sensor supported on and movable parallel to the beam relatively of each of the first pair of carriages for sensing respectively the edges of a carcass of an industrial belt, each sensor being capable of providing a signal proportional to the amount and direction of a deviation in location of said carcass edge, and hydromechanical drive means responsive to said signals to move each of said sensors relative to the respectively associated carriage and to move said main carriage a distance equal to one-half the algebraic sum of the deviations of said carcass edge.
Claim 3
Dependent Claim
97 words
In an industrial belting calender having a sensor for monitoring lateral deviations of a belt carcass entering said calender and a gum edge trimming blade for trimming an edge of belting exiting from said calender, the improvement comprising, signal detection means for receiving and processing signals from the sensor and including a plurality of fluid flow control valves, and hydromechanical drive means responsive to said detection means and operable to move said sensor an amount proportional to the edge deviation sensed by the sensor and, concurrently, to move said trimming blade a predetermined fraction of said amount.
Claim 4
Dependent Claim
97 words
In an industrial belting calender having a sensor for monitoring lateral deviations of a belt carcass entering said calender and a gum edge trimming blade for trimming an edge of belting exiting from said calender, the improvement comprising, signal detection means for receiving and processing signals from the sensor and including a plurality of fluid flow control valves, and hydromechanical drive means responsive to said detection means and operable to move said sensor an amount proportional to the edge deviation sensed by the sensor and, concurrently, to move said trimming blade a predetermined fraction of said amount.
Claim 5
Dependent Claim
93 words
In an industrial belting calender as claimed in claim 2, the hydromechanical means comprising a master cylinder and a first slave cylinder each having pistons, a gear rack connected for longitudinal movement proportional to the movement of the pistons relative to the respective cylinders, a pinion mounted rotatably on an axis fixed relative to the lateral position of said trimming blade and drivably meshed with said rack, and a second slave cylinder connected hydraulically with the first slave cylinder and movable in response to movement of the piston therein to move said sensor.
Claim 6
Dependent Claim
94 words
In an industrial belting calender for applying a gum cover to an industrial belting carcass, the improvement comprising a pair of sensing means disposed to sense lateral deviations of the respective edges of said carcass entering said calender, an adjustably spaced apart pair of gum edge trimming blades disposed to trim edges of said belting exiting from said calender, and means for moving said pair of blades laterally of said belting by an amount equal to one-half the algebraic sum of the lateral deviations of the edges of said carcass sensed by said sensors.
Claim 7
Dependent Claim
94 words
In an industrial belting calender for applying a gum cover to an industrial belting carcass, the improvement comprising a pair of sensing means disposed to sense lateral deviations of the respective edges of said carcass entering said calender, an adjustably spaced apart pair of gum edge trimming blades disposed to trim edges of said belting exiting from said calender, and means for moving said pair of blades laterally of said belting by an amount equal to one-half the algebraic sum of the lateral deviations of the edges of said carcass sensed by said sensors.
Claim 8
Dependent Claim
56 words
A device as claimed in claim 1, said trimming blade comprising a rotatable blade having a circular edge adapted to shear gum excess from said belting, said blade being mounted on the respectively associated carriage for movement toward and away from one of said calender rolls in a plane perpendicular to the axis of said roll.
Claim 9
Dependent Claim
45 words
A device as claimed in claim 1, said first drive means comprising a nut fixed to each of said first pair of carriages, a pair of coaxially arranged screws threaded in the respective said nuts, and motor means constructed and arranged to rotate said screws.
Claim 10
Dependent Claim
45 words
A device as claimed in claim 1, said second drive means comprising a nut fixed to each of said second pair of carriages, a pair of coaxially arranged screws threaded in the respective said nuts, and motor means constructed and arranged to rotate said screws.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |