Patent US3153243A successfully refreshed from Google Patents.
Patent US3834612A successfully refreshed from Google Patents.
US3834612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compartment door structure
Assignee: AMERICAN DEVICE MANUFACTURING Co Inc
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Filing: 1971-08-19
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Granted: 1974-09-10
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Expires: 1991-08-19
Abstract
Abstract A compartment has a door with integral ears spaced apart and projecting from one edge of the door and substantially flush with the outer face of the door, there being a mounting bar extending between the ears and having an outer face flush with the door outer face; a hinge pin extending from each end of the mounting bar into the adjacent door ear; and elements, accessible only from the rear of the door, for securing the mounting bar to a frame closely surrounding the door and flush with its outer face. In a preferred form of the invention the mounting bar includes a flange which normally projects inwardly from the rear face of the door when the door is closed and is secured to the frame by screws or other elements accessible when the door is opened but concealed by the door when closed. The invention contemplates the mounting of a plurality of doors, as described above, in a common frame which is hinged at one side to a cabinet or wall so as to swing on its hinge as a unit with all of the doors having their outer faces flush with the common frame.
Inventors
- 👤 W Bixby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:49
CPC Classifications
A; A47; A47G; A47G29/00; A47G29/12; A47G29/1201
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
310 words
A tamper-proof door, comprising a substantially rectangular frame having an inner marginal surface defining a central opening and having an outer face, said door mounted in said opening to close the opening and comprising a substantially flat, rectangular plate having inner and outer faces and opposite side edges, said outer face of the door substantially coplanar with the outer face of the frame, a pair of spaced apart mounting ears on one side edge of the door projecting laterally therefrom substantially flush with the outer face of the door and defining an elongate recess therebetween, an elongate hinge bar received in said recess and extending throughout the length of the recess, said hinge bar having opposite ends contiguous with said ears, pivot pins extending from said opposite ends into said ears to pivotally mount said door to said hinge bar, fastening means extended into said hinge bar and frame to secure said door and hinge bar as a unit to said frame, said hinge bar having a first side surface thereof engaged with the outer face of the frame and having an outer face thereof flush with the outer face of the door, a second side surface of said hinge bar in opposed, contiguous relationship to said one side edge of said door and including first and second, parallel, laterally offset surfaces extending the length of the hinge bar, with one of said offset surfaces substantially flush with the inner marginal surface of the frame and engaged with said one side edge of said door and the other offset surface spaced from the said side edge of the door, to thus prevent access to said fastening means when said door is closed to preclude unauthorized removal of said door and at the same time providing clearance between said door and said hinge bar to enable said door to be opened.
Claim 2
Dependent Claim
310 words
A tamper-proof door, comprising a substantially rectangular frame having an inner marginal surface defining a central opening and having an outer face, said door mounted in said opening to close the opening and comprising a substantially flat, rectangular plate having inner and outer faces and opposite side edges, said outer face of the door substantially coplanar with the outer face of the frame, a pair of spaced apart mounting ears on one side edge of the door projecting laterally therefrom substantially flush with the outer face of the door and defining an elongate recess therebetween, an elongate hinge bar received in said recess and extending throughout the length of the recess, said hinge bar having opposite ends contiguous with said ears, pivot pins extending from said opposite ends into said ears to pivotally mount said door to said hinge bar, fastening means extended into said hinge bar and frame to secure said door and hinge bar as a unit to said frame, said hinge bar having a first side surface thereof engaged with the outer face of the frame and having an outer face thereof flush with the outer face of the door, a second side surface of said hinge bar in opposed, contiguous relationship to said one side edge of said door and including first and second, parallel, laterally offset surfaces extending the length of the hinge bar, with one of said offset surfaces substantially flush with the inner marginal surface of the frame and engaged with said one side edge of said door and the other offset surface spaced from the said side edge of the door, to thus prevent access to said fastening means when said door is closed to preclude unauthorized removal of said door and at the same time providing clearance between said door and said hinge bar to enable said door to be opened.
Claim 3
Dependent Claim
36 words
A tamper-proof door as in claim 1, wherein said hinge bar is substantially square in transverse cross section, and said fastening means extends forwardly through said frame from a rear surface thereof into said hinge bar.
Claim 4
Dependent Claim
60 words
A tamper-proof door as in claim 1, wherein said hinge bar includes a portion with a generally square transverse cross sectional shape and a flange projecting rearwardly from said first side surface thereof, said flange received in a complementary recess in the inner marginal surface of the frame, and said fastening means extended through said flange and into said frame.
Claim 5
Dependent Claim
42 words
A tamper-proof door as in claim 1, wherein a key operated lock means is secured on the inner face of the door and includes a bolt 26 rearwardly of the door at the side edge thereof opposite said one side edge thereof.
Claim 6
Dependent Claim
80 words
A tamper-proof door as in claim 1, wherein said frame circumscribes a receptacle subdivided into a plurality of box-like compartments for receiving mail and the like, a plurality of elongate subframe members extending between opposite sides of said frame and defining a plurality of openings each in registry with a respective one of said compartments, and a door and associated hinge bar is mounted to said subframe members in each opening to close each said opening and its associated compartment.
Claim 7
Dependent Claim
36 words
A tamper-proof door as in claim 5, wherein said hinge bar is substantially square in transverse cross seCtion, and said fastening means extends forwardly through said frame from a rear surface thereof into said hinge bar.
Claim 8
Dependent Claim
60 words
A tamper-proof door as in claim 5, wherein said hinge bar includes a portion with a generally square transverse cross sectional shape and a flange projecting rearwardly from said first side surface thereof, said flange received in a complementary recess in the inner marginal surface of the frame, and said fastening means extended through said flange and into said frame.
Claim 9
Dependent Claim
13 words
A tamper-proof door as in claim 6, wherein said fastening means comprise screws.
Claim 10
Dependent Claim
13 words
A tamper-proof door as in claim 7, wherein said fastening means comprise screws.
Claim 11
Dependent Claim
34 words
A tamper-proof door as in claim 5, wherein the frame, subframe elements, and doors are pivotally movable as a unit about one side edge of said frame to simultaneously expose all of said compartments.
Claim 12
Dependent Claim
47 words
A tamper-proof door as in claim 10, wherein each compartment comprises walls perpindicular to the plane of the frame, said walls having front edge surfaces which abut the subframe members when the frame, subframe members and doors carried thereby are pivoted into closed position over said compartments.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |