Patent US3435517A successfully refreshed from Google Patents.
Patent US4006459A successfully refreshed from Google Patents.
US4006459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling the passage of persons and objects between two areas
Assignee: Mardix Inc
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Filing: 1973-05-25
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Granted: 1977-02-01
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Expires: 1993-05-25
Abstract
Abstract A security method for controlling the passage of persons and objects between two areas, this method employs a controlled space. Prior to admitting, during the presence and subsequent to exiting of a person to this space, the contents of the space are monitored and examined.
Inventors
- 👤 Richard H. Baker
- 👤 Richard C. Hix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:20
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/20; G07C9/22; G07C9/25; G07C9/253; G07C9/27
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
185 words
The method of controlling the passage of persons between a secured area and an unsecured area through an enclosed space having at least a normally locked door for communicating the space with the secured area and another normally locked door for communicating the space with an unsecured area, comprising the steps of: unlocking one of said doors in response to a person requesting admittance to said space from one of the areas; electronically examining substantially the entire contents of said space from a time not later than just prior to the closing of said one door to a time not earlier than just after the locking of said one door to determine the presence in said space of an admitted person and object; locking said one door, after closing, with the admitted person and object, if any, in said space; and electronically examining at least one characteristic of the person admitted to said space, other than presence and with means other than those used to examine entire contents, to determine the suitability of the examined person to proceed through said space to the other area.
Claim 2
Independent Claim
185 words
The method of controlling the passage of persons between a secured area and an unsecured area through an enclosed space having at least a normally locked door for communicating the space with the secured area and another normally locked door for communicating the space with an unsecured area, comprising the steps of: unlocking one of said doors in response to a person requesting admittance to said space from one of the areas; electronically examining substantially the entire contents of said space from a time not later than just prior to the closing of said one door to a time not earlier than just after the locking of said one door to determine the presence in said space of an admitted person and object; locking said one door, after closing, with the admitted person and object, if any, in said space; and electronically examining at least one characteristic of the person admitted to said space, other than presence and with means other than those used to examine entire contents, to determine the suitability of the examined person to proceed through said space to the other area.
Claim 3
Dependent Claim
59 words
The method in accordance with claim 1 including the step of: unlocking the other door to permit the person and object, if any, in said space to proceed therethrough to the other area if said examined characteristic of the person and said examined contents of said space indicates the person and object, if any, to be suitable to proceed.
Claim 4
Dependent Claim
71 words
The method of claim 2 including the additional steps of: locking said other door after the person and object, if any, in said space have presumably departed or been removed, respectively; and again electronically examining substantially the entire contents of said space prior to admitting another person to the space to determine whether the previously examined person has actually departed therefrom and whether any object has been left in said space.
Claim 5
Dependent Claim
37 words
The method of claim 1 including the steps of: unlocking said one door to permit said person in said space to return through said one door if said examined characteristic of the person indicates unsuitability to proceed.
Claim 6
Dependent Claim
63 words
The method in accordance with claim 4 including the steps of: locking said one door after the person in said space has presumably departed; and again electronically examining substantially the entire contents of said space prior to admitting another person to said space to determine whether the previously examined person has actually departed therefrom and whether any objects were left in said space.
Claim 7
Dependent Claim
45 words
The method in accordance with claim 1 in which the electronically examining of the person includes: simultaneously scanning the face of said person in said space and a photograph on an identification card presented by the person; and comparing the images resulting from said scanning.
Claim 8
Dependent Claim
35 words
The method in accordance with claim 6 including the step of: unlocking said one door to permit said person in said space to return through said one door if said compared images do not correspond.
Claim 9
Dependent Claim
36 words
The method in accordance with claim 6 including the step of: unlocking said other door to permit the person and object in said space to proceed therethrough to the other area if said compared images correspond.
References Cited (Backward Citations)
US2914746A
Cited
US3564132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |