US3287855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low density particle board core door
Assignee: Macmillan Bloedel and Powell River Ltd
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Filing: 1964-02-10
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Granted: 1966-11-29
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Earland G Hallonquist
- 👤 John M Jaworsky
- 👤 Sturmlinger Horst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:26
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/70; E06B3/82; E06B3/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A DOOR COMPRISING A SOLID LOW DENSITY CORE OF FROM 0.20 TO 0.50 SPECIFIC GRAVITY OF SMALL WOOD PARTICLES PRESSED AND BONDED TOGETHER WITH ADHESIVE, THE PARTICLES NEAR THE SURFACE OF THE CORE BEING OF SUCH A SIZE THAT THEY WOULD PASS THROUGH ABOUT A 5 MESH (TYLER) STANDARD SCREEN BUT WOULD BE RETAINED ON ABOUT ON ABOUT A 30 MESH SCREEN, BUT BEING FACED WITH A SINGLE THICKNESS OF WOOD VENEER RANGING IN THICKNESS FROM ABOUT 1/60 INCH TO ABOUT 1/8 INCH ADHESIVELY SECURED THERETO, SAID VENEER FORMING A SMOOTH UNBROKEN FACING FOR THE CORE AND COOPERATING WITH THE CORE TO PROVIDE DIMENSIONAL STABILITY IN AND PREVENT WARPING AND TWISTING OF THE DOOR.
Claim 2
Dependent Claim
114 words
A DOOR COMPRISING A SOLID LOW DENSITY CORE OF FROM 0.20 TO 0.50 SPECIFIC GRAVITY OF SMALL WOOD PARTICLES PRESSED AND BONDED TOGETHER WITH ADHESIVE, THE PARTICLES NEAR THE SURFACE OF THE CORE BEING OF SUCH A SIZE THAT THEY WOULD PASS THROUGH ABOUT A 5 MESH (TYLER) STANDARD SCREEN BUT WOULD BE RETAINED ON ABOUT ON ABOUT A 30 MESH SCREEN, BUT BEING FACED WITH A SINGLE THICKNESS OF WOOD VENEER RANGING IN THICKNESS FROM ABOUT 1/60 INCH TO ABOUT 1/8 INCH ADHESIVELY SECURED THERETO, SAID VENEER FORMING A SMOOTH UNBROKEN FACING FOR THE CORE AND COOPERATING WITH THE CORE TO PROVIDE DIMENSIONAL STABILITY IN AND PREVENT WARPING AND TWISTING OF THE DOOR.
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |