Movable or removable closures – Closures interconnected for concurrent movement – Closures mounted for swinging
Reexamination Certificate
1999-03-26
2001-02-13
Stodola, Daniel P. (Department: 3634)
Movable or removable closures
Closures interconnected for concurrent movement
Closures mounted for swinging
C049S046000
Reexamination Certificate
active
06185867
ABSTRACT:
FIELD OF INVENTION
This invention relates generally to an improved gated entrance device permitting passage in one direction. This invention further relates to a gated entrance device having a gate collapsing means for allowing unobstructed traversal of said gated entrance device in either direction in case of an emergency. This invention further relates to a method of traversing a gated entrance device.
BACKGROUND OF INVENTION
This invention relates to the art of self-closing gates or barriers that permit passage in one direction, but not in the other direction.
For example U.S. Pat. No. 5,615,520 granted to John D. McGuire provides for a one-way gate for allowing passage in one direction whose internal mechanical works are concealed within an enclosure, those mechanical works including independent means to perform three function of, first, biasing the gate to return to a closed position; second, limiting the range of motion of the gate between a closed position and a fully open stop; and third, providing a damper to retard the motion of the gate.
Some prior art self-closing gates or barriers permit a person to gain passage through said one-way gate in a direction opposite to said one direction by displacing said gate or barrier said one direction and passing through the resulting unobstructed passageway. There is a need therefore for entrance devices which prevent the one-way gate or barrier from being “tampered” in this way. For example, WO 93/23799 provides for at least one entrance gate, and a system for controlling entrance through said entrance gates comprising, first, entrance passageway defined by posts on which gates are pivotally mounted; second, a sonar sensor means which functions to detect the presence of people and objects in the vicinity of the passageway and to deliver signals to a control means for controlling opening and closing of the gate; wherein said sonar sensor means includes at least one sonar which is mounted in or in the vicinity of the passageway.
The prior art entrance device utilizing sonar is complicated in that said entrance device requires, first, a sonar emitting device; second, an electronic unit for amplifying sonar pulses; third, a microprocessor for sampling said sonar signals; fourth, a microprogram operably associated with said microprocessor for processing said sonar signals to a further microprocessor which controls opening and closing of the gates. Operation of said prior art entrance device utilizing sonar also requires configuration of said microprocessors to store input related to a defined external measuring area within which objects are detected by said sonar sensing means.
There is a need therefore for an entrance device of simple construction that is easy and inexpensive to produce, that can be installed without difficulty, and which is easy to operate.
SUMMARY OF THE INVENTION
In accordance with a first aspect of the invention, an entrance device is provided having at least two barrier means to permit entrance in one direction comprising, a first barrier means manually displaceable from a closed position to an open position; and second barrier means manually displaceable from a closed position to an open position when said first barrier means is being engaged to achieve said second open position; wherein said first and second barrier means are presented by said entrance device in sequence.
In another aspect of this invention, an entrance device to permit entrance in one direction is provided, said entrance device comprising: (a) at least one partition member defining a passageway; (b) first barrier arm assembly mounted on said partition member, said first barrier arm assembly comprising, (i) a first barrier arm, and (ii) first barrier arm rotor means connected to said first barrier arm and rotatably mounted on said partition member and adapted for manual rotation of said first barrier arm between a first closed position and second open position; a (c) second barrier am assembly mounted on said partition member and spaced apart from said first barrier arm assembly, said second barrier assembly comprising, (i) a second barrier arm; (ii) second barrier arm rotor means connected to said second barrier arm and rotatably mounted on said partition member and adapted for manual rotation of said second barrier arm between a first closed position and second open position; and (iii) sequential barrier arm rotor releasing means comprising, (A) a stopping means comprising, a stopping member presented by said partition member adjacent to said second barrier arm rotor means; and stopping arm presented by said second barrier arm rotor means and operably associated with said stopping member, wherein said stopping means prevents rotation of said second barrier arm rotor means from said closed position toward said open position; and (B) releasing means for displacing said stopping member, thereby releasing said stopping means when said first barrier arm rotor means is rotated from said closed position toward said open position, and thereby allowing rotation of said second barrier arm rotor means from said closed position toward said open position.
In a further aspect of tie invention, one may additionally find a collapsing means for manually displacing said first and second barrier arms from said first closed position or second open position to achieve a third collapsed position wherein said first and second barrier arms permit unobstructed passage through said passageway.
In a still Her aspect of the invention, a method of traversing an entrance device having at least a first and second manually operable barrier means mounted in sequence on at least one partition member comprising the steps of: (a) manually displacing said first barrier arm so as to allow passage past said first barrier arm; (b) said first barrier arm releasing a blocking means that prevents displace of said second barrier arm, so as to allow passage past said second barrier arm by having displaced said first barrier arm; and (c) manually displacing said second barrier arm so as to exit said entrance device.
REFERENCES:
patent: 353481 (1886-11-01), Copeland
patent: 1872599 (1932-08-01), Le Grand
patent: 2622354 (1952-12-01), Bacon
patent: 3386202 (1968-06-01), Crews et al.
patent: 3606698 (1971-09-01), Tanaka et al.
patent: 3742647 (1973-07-01), Tomita
patent: 4195442 (1980-04-01), Keeling et al.
patent: 4291500 (1981-09-01), Reckin et al.
patent: 4519164 (1985-05-01), Porter
patent: 5694867 (1997-12-01), Diaz-Lopez
patent: WO 93/23799 (1993-05-01), None
Cohen Curtis A.
Gierczak Eugene J. A.
Stodola Daniel P.
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