Patent US4533905A successfully refreshed from Google Patents.
US4533905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating means for a door operator device
Assignee: Firmagroup Australia Pty Ltd
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Filing: 1982-05-14
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Granted: 1985-08-06
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Expires: 2002-05-14
Abstract
Abstract Door operator device comprising an indicator that the door is in either fully opened or fully closed condition, including a drive for moving the door to these positions in response to operation of an initiator connected therewith. The device includes a switch circuit to switch off the drive when the door has reached either of the positions, and the indicator is operatively interconnectable with the door operator device to provide the information that the door is in its fully opened or closed condition.
Inventors
- 👤 Simon Leivenzon
- 👤 Steven Leivenzon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:37
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05Y; E05Y2400/00; E05Y2400/10; E05Y2400/32; E05Y2400/35; E05Y2400/354; E05Y2400/50; E05Y2400/51; E05Y2400/80; E05Y2400/81; E05Y2400/818; E05Y2400/822; E05Y2400/83; E05Y2900/00; E05Y2900/10; E05Y2900/106
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
230 words
In an operator for a door, (a) drive means for moving a door to which said operator is attachable from open to closed position and from closed position to open position; (b) initiating means for initiating said drive means to effect such movements of said door; (c) circuit means operatively interconnected between said drive means and said initiating means to permit such movement of said door and switching off of said drive means when a fully opened or fully closed positions is reached; (d) at least said drive means, said initiating means and said circuit means being locatable, in the vicinity of said door; (e) second initiating means and door position indicator means locatable remote from said operator and remote from the vicinity of said door; (f) said door position indicator means comprising an indicator for indicating the door fully closed position; (g) said second initiating means initiating drive of said drive means to effect at least a movement of said door to fully closed position; (h) said indicator having two operative states, including a first state in which, when it is activated, it can give a fail safe indication, and a second state in which, when it is not activated, it cannot give such indication; (i) said door position indicator means comprising door movement indication means provided to give an indication that said door is moving between either position
Claim 2
Dependent Claim
230 words
In an operator for a door, (a) drive means for moving a door to which said operator is attachable from open to closed position and from closed position to open position; (b) initiating means for initiating said drive means to effect such movements of said door; (c) circuit means operatively interconnected between said drive means and said initiating means to permit such movement of said door and switching off of said drive means when a fully opened or fully closed positions is reached; (d) at least said drive means, said initiating means and said circuit means being locatable, in the vicinity of said door; (e) second initiating means and door position indicator means locatable remote from said operator and remote from the vicinity of said door; (f) said door position indicator means comprising an indicator for indicating the door fully closed position; (g) said second initiating means initiating drive of said drive means to effect at least a movement of said door to fully closed position; (h) said indicator having two operative states, including a first state in which, when it is activated, it can give a fail safe indication, and a second state in which, when it is not activated, it cannot give such indication; (i) said door position indicator means comprising door movement indication means provided to give an indication that said door is moving between either position
Claim 3
Dependent Claim
22 words
The combination claimed in claim 1, wherein said door position indicating means comprises an indicator for indicating the door fully open position.
Claim 4
Dependent Claim
51 words
The combination claimed in claim 2, wherein said indicator which indicates that said door is fully open also has two operative states, including a first state in which it is activated and gives an indication and a second state in which it is not activated and does not given an indication.
Claim 5
Dependent Claim
34 words
The combination claimed in claim 3, wherein said indicator means which indicates that said door is fully closed is caused to cycle between its two states when said door is moving to closed position.
Claim 6
Dependent Claim
33 words
The combination claimed in claim 3, wherein said indicator means which indicates that said door is open is caused to cycle between its two states when said door is moving to open position.
Claim 7
Dependent Claim
44 words
The combination claimed in claim 1, wherein said door position indicator means is connected with said circuit means to provide an indication that said door has reached said fully closed positions in response to said circuit means operating to switch off said drive means.
Claim 8
Dependent Claim
18 words
The combination claimed in claim 1, wherein said door movement indicator means comprises said door position indicator means.
Claim 9
Dependent Claim
46 words
The combination claimed in claim 7, wherein when said door position indicator means is giving an indication that said door is moving, cyclic means connected in said circuit means is caused to cycle to, in turn, cause said indicator means to cycle between its two states.
Claim 10
Dependent Claim
13 words
The combination claimed in claim 1, wherein said indicator means comprises lamp means.
Claim 11
Dependent Claim
28 words
The combination claimed in claim 1, wherein said door movement indicator means includes an audible indicator means to also give an audible indication when said door is moving.
Claim 12
Dependent Claim
21 words
The combination claimed in claim 1, wherein said second intitiating means also permits movement of said door to fully open position.
Claim 13
Dependent Claim
89 words
The combination claimed in claim 11, wherein said circuit means includes switch means for supplying power to said drive means, logic circuit means for controlling connections to said drive means by said switch means, whereby to control the direction of movement of said drive means, said logic circuit means being connected to receive control signals from both a down circuit and an up circuit, said down circuit and said up circuit each having further switch means for indicating respectively an opening or a closing drive of said drive means.
Claim 14
Dependent Claim
19 words
The combination claimed in claim 1, wherein said further initiating means and door position indicating means are mounted together.
Claim 15
Dependent Claim
79 words
The combination claimed in claim 1, wherein said drive means is an electric motor and said circuit means includes current sensing means for sensing the current drawn by said electric motor and reversing means connected with said current sensing means to reverse the direction of rotation of said electric motor if the current drawn exceeds a normal operating current, whereby during closing of said door, the door can be automatically opened if it strikes an object under the door.
References Cited (Backward Citations)
US2316682A
Cited
US3161852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |