US3751953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective lock ring assembly
Assignee: Individual
•
Filing: 1972-02-22
•
Granted: 1973-08-14
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Expires: 1992-02-22
Abstract
Abstract A two-part lock ring assembly for protectively encircling the outwardly projecting portion of a cylinder type of door lock. The ring assembly is comprised of an inner ring which is clamped tightly between an outer flange of the lock cylinder and the door, and an outer ring which is loosely, rotatively, held about the inner ring. The outer annular ring is of a truncated conical configuration.
Inventors
- 👤 G Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:35
CPC Classifications
E; E05; E05B; E05B15/00; E05B15/02; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7723; Y10T70/7915; Y10T70/7927; Y10T70/80; Y10T70/8432; Y10T70/8568
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
201 words
A protective lock ring assembly for encircling an outwardly projecting portion of a cylinder type of lock, fixedly mounted in a through hole in a door or the like and having an outer enlarged annular flange comprising, A. a one-piece inner ring of a first axial length about the outwardly extending portion of the lock in a fixed relation between the enlarged annular flange and the door and including, 1. an annular depression in the outer face thereof to receive the enlarged annular flange in a recessed relation, 2. the inner ring having a first end and a second end, said inner ring being sized for the first end to bear against the surface of the door and said second end to bear against the annular flange, and said inner ring having an outer surface, B. an outer ring loosely on said inner ring and of an axial length no greater than the axial length of the inner ring, and said outer ring having an inner surface overlaying said outer surface of said inner ring along their respective axial lengths and in close adjacent relationship; and C. means to confine said outer ring on said inner ring to rotational movement only.
Claim 2
Dependent Claim
201 words
A protective lock ring assembly for encircling an outwardly projecting portion of a cylinder type of lock, fixedly mounted in a through hole in a door or the like and having an outer enlarged annular flange comprising, A. a one-piece inner ring of a first axial length about the outwardly extending portion of the lock in a fixed relation between the enlarged annular flange and the door and including, 1. an annular depression in the outer face thereof to receive the enlarged annular flange in a recessed relation, 2. the inner ring having a first end and a second end, said inner ring being sized for the first end to bear against the surface of the door and said second end to bear against the annular flange, and said inner ring having an outer surface, B. an outer ring loosely on said inner ring and of an axial length no greater than the axial length of the inner ring, and said outer ring having an inner surface overlaying said outer surface of said inner ring along their respective axial lengths and in close adjacent relationship; and C. means to confine said outer ring on said inner ring to rotational movement only.
Claim 3
Dependent Claim
112 words
the inner ring having a first end and a second end, said inner ring being sized for the first end to bear against the surface of the door and said second end to bear against the annular flange, and said inner ring having an outer surface, B. an outer ring loosely on said inner ring and of an axial length no greater than the axial length of the inner ring, and said outer ring having an inner surface overlaying said outer surface of said inner ring along their respective axial lengths and in close adjacent relationship; and C. means to confine said outer ring on said inner ring to rotational movement only.
Claim 4
Dependent Claim
112 words
the inner ring having a first end and a second end, said inner ring being sized for the first end to bear against the surface of the door and said second end to bear against the annular flange, and said inner ring having an outer surface, B. an outer ring loosely on said inner ring and of an axial length no greater than the axial length of the inner ring, and said outer ring having an inner surface overlaying said outer surface of said inner ring along their respective axial lengths and in close adjacent relationship; and C. means to confine said outer ring on said inner ring to rotational movement only.
Claim 5
Dependent Claim
28 words
A protective lock ring assembly as defined in claim 1 wherein said outer ring includes a beveled outer periphery providing the form of an outwardly extending truncated cone.
Claim 6
Dependent Claim
64 words
A protective lock ring assembly as defined in claim 1 wherein said means to confine comprises a reduced external diameter inner end portion on said inner ring forming A shoulder a predetermined distance inwardly from the inner end thereof and a reduced internal diameter inner end portion on said outer ring forming a shoulder a slightly shorter distance inwardly from the inner end thereof.
Claim 7
Dependent Claim
25 words
A protective lock ring assembly as defined in claim 3 wherein said inner and outer rings are formed with thick walls of a hardened steel.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |