US3797171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Garage door opener
Assignee: Individual
•
Filing: 1972-08-25
•
Granted: 1974-03-19
•
Expires: 1992-08-25
Abstract
Abstract A door operating device having two identical sets of rollers spaced from one another along a guide rail. Each set of rollers has a roller engaging a surface of the guide rail, and another, opposed roller engaging another surface of the same guide rail. A frame supported by the rollers for movement therewith has mounted thereon a reversible motor and a drive train for transmitting power from the motor to a roller of each of the roller sets. A bar connected to the frame is attached to a shock absorbing arrangement mounted on a door to be opened and closed by the device. A control system including limit switches on the frame and triggering members associated with the rail limits and reverses movement of the device along the rail.
Inventors
- 👤 R Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:39
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/676; E05Y; E05Y2201/00; E05Y2201/40; E05Y2201/43; E05Y2201/434; E05Y2600/00; E05Y2600/40; E05Y2600/46; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
165 words
A door operating device, comprising, in combination: a. a frame; b. a pair of rollers forming a roller set, one roller of the pair being arranged engaging a one surface of a guide rail and the other roller of the pair being arranged engaging a surface of the guide rail opposed to the one surface, the pair of rollers also arranged opposite one another; c. a shaft mounted on the frame, the one roller being rotatably mounted on the shaft; d. a further shaft pivotally mounted on the frame, the other roller being rotatably mounted on the further shaft; e. adjustment means connected to the further shaft and affixed to the frame for permitting the distance between the shaft and further shaft to be selectively, continuously varied while under tension for achieving a desired tension on the pair of rollers; f. means connected to the pair of rollers for moving same along the guide rail; and g. means for connecting the frame to a door.
Claim 2
Dependent Claim
165 words
A door operating device, comprising, in combination: a. a frame; b. a pair of rollers forming a roller set, one roller of the pair being arranged engaging a one surface of a guide rail and the other roller of the pair being arranged engaging a surface of the guide rail opposed to the one surface, the pair of rollers also arranged opposite one another; c. a shaft mounted on the frame, the one roller being rotatably mounted on the shaft; d. a further shaft pivotally mounted on the frame, the other roller being rotatably mounted on the further shaft; e. adjustment means connected to the further shaft and affixed to the frame for permitting the distance between the shaft and further shaft to be selectively, continuously varied while under tension for achieving a desired tension on the pair of rollers; f. means connected to the pair of rollers for moving same along the guide rail; and g. means for connecting the frame to a door.
Claim 3
Dependent Claim
24 words
A structure as defined in claim 1, wherein same includes a plurality of sets of rollers spaced from one another along the guide rail.
Claim 4
Dependent Claim
90 words
A structure as defined in claim 2, wherein the shaft is a plurality of shafts, and a one roller of each of the sets of rollers is rotatably mounted on a respective one of the shafts, the adjustment means includes a longitudinally extending member; and the further shaft is a plurality of shafts pivitally mounted on the frame and passing through holes provided in the longitudinally extending member, and the other roller of each of the sets of rollers is rotatably mounted on a respective one of the further shafts.
Claim 5
Dependent Claim
60 words
A structure as defined in claim 3, wherein each of the sets of rollers has a roller engaging a one surface of a guide rail and another roller engaging a surface of the rail opposed to the one surface, one of the rollers of each of the sets of the rollers being connected to the moving means for actuation thereby.
Claim 6
Dependent Claim
19 words
A structure as defined in claim 4, wherein the moving means is connected to the rollers for movement therewith.
Claim 7
Dependent Claim
42 words
A structure as defined in claim 5, wherein the moving means includes a motor mounted on said frame, and means for transmitting torque from said motor to the shafts of the one rollers for reversibly moving the device along a guide rail.
Claim 8
Dependent Claim
150 words
A structure as defined in claim 6, wherein the transmitting means includes a torque transfer shaft rotatably mounted on said frame, a pulley and a first sprocket mounted on said transfer shaft for rotation therewith, a belt arranged about said pulley and connected to said motor for transmitting torque from the motor to the first sprocket, a second sprocket mounted on the shafts of the one roller of one set of rollers for rotating same, a first sprocket chain connected to said sprockets for transmitting power to the one roller shaft and rotating same, and a third sprocket mounted on the roller shaft and a fourth sprocket mounted on the corresponding roller shaft of the other set of rollers for rotation with their associated shaft, and a second sprocket chain connected to the third and fourth sprockets for transmitting torque from the one roller shaft to the corresponding roller shaft.
Claim 9
Dependent Claim
34 words
A structure as defined in claim 7, wherein the moving means further includes means cooperating with elements associated with the guide rail for limiting and reversing the movement of the device along tHe rail.
Claim 10
Dependent Claim
93 words
A structure as defined in claim 8, wherein the connecting means has a support bracket connected to a door guided by the guide rail, said support bracket provided with a U-shaped portion at an end spaced from the door, a rod connected to and extending between legs of said portion, a pair of compression springs arranged on said rod and an angle bracket slidably engaging said rod and arranged between said springs for being cushioned thereby, and a bar connected to and extending from said frame and pivotally connected to said angle bracket.
Claim 11
Dependent Claim
42 words
A structure as defined in claim 1, wherein the moving means includes a motor mounted on said frame, and means for transmitting torque from said motor to the shafts of the one rollers for reversibly moving the device along a guide rai.
Claim 12
Dependent Claim
150 words
A structure as defined in claim 10, wherein the transmitting means includes a torque transfer shaft rotatably mounted on said frame, a pulley and a first sprocket mounted on said transfer shaft for rotation therewith, a belt arranged about said pulley and connected to said motor for transmitting torque from the motor to the first sprocket, a second sprocket mounted on the shafts of the one roller of one set of rollers for rotating same, a first sprocket chain connected to said sprockets for transmitting power to the one roller shaft and rotating same, and a third sprocket mounted on the roller shaft and a fourth sprocket mounted on the corresponding roller shaft of the other set of rollers for rotation with their associated shaft, and a second sprocket chain connected to the third and forth sprockets for transmitting torque from the one roller shaft to the corresponding roller shaft.
Claim 13
Dependent Claim
20 words
The structure as defined in claim 1, wherein the moving means is connected to the engaging means for movement therewith.
Claim 14
Dependent Claim
33 words
A structure as defined in claim 1, wherein the moving means includes means cooperating with elements associated with a guide rail for limiting and reversing the movement of the device along the rail.
Claim 15
Dependent Claim
93 words
A structure as defined in claim 1, wherein the connecting means has a support bracket connected to a door guided by the guide rail, said support bracket provided with a U-shaped portion at an end spaced from the door, a rod connected to and extending between legs of said portion, a pair of compression springs arranged on said rod and an angle bracket slidably engaging said rod and arranged between said springs for being cushioned thereby, and a bar connected to and extending from moving means and pivotally connected to said angle bracket.
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |