US3698216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
An insertable cylinder for a door lock
Assignee: Individual
•
Filing: 1971-02-11
•
Granted: 1972-10-17
•
Expires: 1991-02-11
Abstract
Abstract A cylinder for a door lock is comprised of a casing insertable into the lock and provided with two spaced portions separated by a slot and each carrying a rotatable drum. The spaced portions are integral with a solid, depending limb which is provided with a threaded opening for securing the cylinder in the lock. A rotatable actuator disk with a radially projecting cam is supported in the slot and is driven in rotation by a carrier disk in the form of a circular segment.
Inventors
- 👤 Ernest Keller-Volper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:43
CPC Classifications
E; E05; E05B; E05B9/00; E05B9/04; E05B9/041; E05B9/10; Y; Y10; Y10S; Y10S70/00; Y10S70/60; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7706; Y10T70/7712
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
A cylinder for a door lock comprising a casing with aligned portions separated by a slot, first and second separate drums individually rotatable in each said portion by a key inserted thereinto, rotatable actuator means in said slot for opening a latch, said actuator means including a projecting actuator cam, and means coupling said drums and said actuator means to rotate said cam through a restricted angle less than 360* and exclude passage of the cam through said recess for a complete rotation of either drum, said rotatable actuator means comprising a rotatable actuator disk with said cam extending radially at the periphery thereof, said disk having a pair of abutment surfaces, said means coupling the drum and actuator means comprising a rotatable carrier disk adjacent the actuator disk and constituted as a circular segment with a chordal surface facing said abutment surfaces for contact therewith to rotate said actuator disk.
Claim 2
Dependent Claim
151 words
A cylinder for a door lock comprising a casing with aligned portions separated by a slot, first and second separate drums individually rotatable in each said portion by a key inserted thereinto, rotatable actuator means in said slot for opening a latch, said actuator means including a projecting actuator cam, and means coupling said drums and said actuator means to rotate said cam through a restricted angle less than 360* and exclude passage of the cam through said recess for a complete rotation of either drum, said rotatable actuator means comprising a rotatable actuator disk with said cam extending radially at the periphery thereof, said disk having a pair of abutment surfaces, said means coupling the drum and actuator means comprising a rotatable carrier disk adjacent the actuator disk and constituted as a circular segment with a chordal surface facing said abutment surfaces for contact therewith to rotate said actuator disk.
Claim 3
Dependent Claim
46 words
A cylinder as claimed in claim 1 wherein said means coupling the drums and the actuator means comprises a lost motion connection to provide 90* of idle movement before the cam is rotated whereby the cam undergoes 270* rotation for a complete rotation of either drum.
Claim 4
Dependent Claim
24 words
A cylinder as claimed in claim 1 wherein said actuator disk has a slot in which said carrier disk is received for relative rotation.
Claim 5
Dependent Claim
49 words
A cylinder as claimed in claim 3 wherein the coupling means further comprises a coupling plate assembly engaged slidably in respective slots provided in said drums and displaceable by insertion of a key into a particular drum to permit selective rotation of said drum and the carrier disk therewith.
Claim 6
Dependent Claim
22 words
A cylinder as claimed in claim 1 wherein said casing includes a solid, depending portion with a threaded opening for attachment purposes.
Claim 7
Dependent Claim
27 words
A cylinder as claimed in claim 5 wherein said slot between the aligned portions is centrally located in said casing and is aligned with said threaded opening.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |