Patent US3742744A successfully refreshed from Google Patents.
US3742744A
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Pin tumbler lock system
Assignee: Aug Winkhaus GmbH and Co KG
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Filing: 1971-01-19
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Granted: 1973-07-03
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Expires: 1991-01-19
Abstract
Abstract A pin tumbler lock of the Yale type additionally equipped with blocking pins spaced in the direction of the cylinder axis in respective bores which extend in the cylinder in a common plane perpendicular to the plane of the key slot and are freely movable in the associated bores between a position in which their rounded outer ends engage a concavely arcuate groove in the lock case and a position in which their similarly rounded inner ends engage corresponding lateral recesses or a groove in the key, the blocking pins permitting a further increase of the number of combinations available in a lock system having a common master key.
Inventors
- 👤 E Lumme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:28
CPC Classifications
E; E05; E05B; E05B27/00; E05B27/0042; E05B27/0082; E05B19/00; E05B19/0017; E05B19/0041; E05B19/0052; E05B27/0053; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7565; Y10T70/7915; Y10T70/7932; Y10T70/7944
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
406 words
A lock system including a plurality of pin tumbler lock arrangements, each arrangement having a case; a cylinder rotatAble in said case about an axis toward and away from a locking position, said cylinder being formed with an axially open key slot extending in a plane substantially through said axis, with a plurality of axially spaced first bores extending substantially in said plane and communicating with said slot, and with a plurality of axially spaced second bores transverse to said plane, said second bores extending through said cylinder from said case to said slot; a plurality of pin tumblers in said first bores respectively; resilient biasing means biasing said pin tumblers in said first bores toward said slot; a plurality of blocking pins respectively slidable in said second bores, said case being recessed in alignment with said second bores in said locking position of the cylinder for receiving respective first portions of said blocking pins; cooperating first cam means on said blocking pins and said case for moving the received portions of said blocking pins inward of said second bores when said cylinder rotates away from said locking position thereof; an elongated key shaped and dimensioned for axial movement in said key slot in conforming engagement with said cylinder toward and away from an operative position, said key having a longitudinal edge portion formed with projections and notches, said edge portion being adapted simultaneously to engage said pin tumblers in said operative position, said key being formed with a plurality of lateral recesses aligned with said second bores in the operative position of said key for receiving respective second portions of said blocking pins; and cooperating second cam means on said key and on said blocking pins for moving the received second portions outward of said second bores when said key moves axially away from said operative position, wherein the improvement comprises; a. the distribution of said blocking pins in the second bores of each arrangement and the distribution of recesses in each key being different, pin b. said second bores in each arrangement being located in a common plane parallel to said axis, c. said lateral recesses being aligned in the direction of key movement, d. each key being elongated in said direction, e. said recesses in each key being of equal depth, f. said blocking pins being of equal length, and g. said second bores being of equal number in each of said arrangements.
Claim 2
Dependent Claim
406 words
A lock system including a plurality of pin tumbler lock arrangements, each arrangement having a case; a cylinder rotatAble in said case about an axis toward and away from a locking position, said cylinder being formed with an axially open key slot extending in a plane substantially through said axis, with a plurality of axially spaced first bores extending substantially in said plane and communicating with said slot, and with a plurality of axially spaced second bores transverse to said plane, said second bores extending through said cylinder from said case to said slot; a plurality of pin tumblers in said first bores respectively; resilient biasing means biasing said pin tumblers in said first bores toward said slot; a plurality of blocking pins respectively slidable in said second bores, said case being recessed in alignment with said second bores in said locking position of the cylinder for receiving respective first portions of said blocking pins; cooperating first cam means on said blocking pins and said case for moving the received portions of said blocking pins inward of said second bores when said cylinder rotates away from said locking position thereof; an elongated key shaped and dimensioned for axial movement in said key slot in conforming engagement with said cylinder toward and away from an operative position, said key having a longitudinal edge portion formed with projections and notches, said edge portion being adapted simultaneously to engage said pin tumblers in said operative position, said key being formed with a plurality of lateral recesses aligned with said second bores in the operative position of said key for receiving respective second portions of said blocking pins; and cooperating second cam means on said key and on said blocking pins for moving the received second portions outward of said second bores when said key moves axially away from said operative position, wherein the improvement comprises; a. the distribution of said blocking pins in the second bores of each arrangement and the distribution of recesses in each key being different, pin b. said second bores in each arrangement being located in a common plane parallel to said axis, c. said lateral recesses being aligned in the direction of key movement, d. each key being elongated in said direction, e. said recesses in each key being of equal depth, f. said blocking pins being of equal length, and g. said second bores being of equal number in each of said arrangements.
Claim 3
Dependent Claim
17 words
A lock system comprising, in combination: a. a plurality of pin tumbler lock arrangements, each arrangement including
Claim 4
Dependent Claim
17 words
A lock system comprising, in combination: a. a plurality of pin tumbler lock arrangements, each arrangement including
Claim 5
Dependent Claim
85 words
a cylinder rotatable in said case about an axis toward and away from a locking position, said cylinder being formed i. with an axially open key slot extending in a plane substantially through said axis, ii. with a plurality of axially spaced first bores extending substantially in said plane and communicating with said slot, and iii. with a plurality of axially spaced second bores in a common plane parallel to said axis, said second bores extending through said cylinder from said case to said slot,
Claim 6
Dependent Claim
85 words
a cylinder rotatable in said case about an axis toward and away from a locking position, said cylinder being formed i. with an axially open key slot extending in a plane substantially through said axis, ii. with a plurality of axially spaced first bores extending substantially in said plane and communicating with said slot, and iii. with a plurality of axially spaced second bores in a common plane parallel to said axis, said second bores extending through said cylinder from said case to said slot,
Claim 7
Dependent Claim
23 words
the second bores of each cylinder being aligned with respective recesses of said last-mentioned group in the operative position of said master key.
Claim 8
Dependent Claim
23 words
the second bores of each cylinder being aligned with respective recesses of said last-mentioned group in the operative position of said master key.
Claim 9
Dependent Claim
44 words
A system as set forth in claim 2, wherein said second bores in each arrangement are located in a common plane parallel to said axis, and said lateral recesses are aligned in the direction of key movement, each key being elongated in said direction.
Claim 10
Dependent Claim
10 words
a plurality of pin tumblers in said first bores respectively,
Claim 11
Dependent Claim
10 words
a plurality of pin tumblers in said first bores respectively,
Claim 12
Dependent Claim
14 words
resilient biasing means biasing said pin tumblers in said first bores toward said slot,
Claim 13
Dependent Claim
14 words
resilient biasing means biasing said pin tumblers in said first bores toward said slot,
Claim 14
Dependent Claim
18 words
A system as set forth in claim 3, wherein said recesses in each key are of equal depth.
Claim 15
Dependent Claim
29 words
A system as set forth in claim 1, wherein said second cam means include respective spherically arcuate, mutually engageable faces on said blocking pins and in said lateral recesses.
Claim 16
Dependent Claim
37 words
a plurality of blocking pins respectively slidable in said second bores, said case being recessed in alignment with said second bores in said locking position of the cylinder for receiving respective first portions of said blocking pins,
Claim 17
Dependent Claim
37 words
a plurality of blocking pins respectively slidable in said second bores, said case being recessed in alignment with said second bores in said locking position of the cylinder for receiving respective first portions of said blocking pins,
Claim 18
Dependent Claim
35 words
cooperating first cam means on said blocking pins and said case for moving the received portions of said blocking pins inward of said second bores when said cylinder rotates away from said locking position thereof,
Claim 19
Dependent Claim
35 words
cooperating first cam means on said blocking pins and said case for moving the received portions of said blocking pins inward of said second bores when said cylinder rotates away from said locking position thereof,
Claim 20
Dependent Claim
48 words
A system as set forth in claim 1, wherein each cylinder has a plurality of axially elongated ribs laterally projecting into said key slot thereof, each key being formed with grooves conformingly engaging said ribs, said lateral recesses having respective centers transversely offset from each of said grooves.
Claim 21
Dependent Claim
39 words
A system as set forth in claim 1, wherein the cross section of the first portion of each blocking pin in one of said arrangements is greater than the cross section of the second portion of said blocking pin.
Claim 22
Dependent Claim
82 words
an elongated individual key shaped and dimensioned for axial movement in said key slot in conforming engagement with said cylinder toward and away from an operative position, i. said key having a longitudinal edge portion formed with projections and notches for simultaneous Engagement with said pin tumblers in said operative position, ii. said key being formed with a plurality of lateral recesses aligned with said second bores in the operative position of said key for receiving respective portions of said blocking pins,
Claim 23
Dependent Claim
82 words
an elongated individual key shaped and dimensioned for axial movement in said key slot in conforming engagement with said cylinder toward and away from an operative position, i. said key having a longitudinal edge portion formed with projections and notches for simultaneous Engagement with said pin tumblers in said operative position, ii. said key being formed with a plurality of lateral recesses aligned with said second bores in the operative position of said key for receiving respective portions of said blocking pins,
Claim 24
Dependent Claim
140 words
cooperating second cam means on said key and on said blocking pins for moving the receiving second portions outward of said second bores when said key moves axially away from said operative position, i. the distribution of said blocking pins of each arrangement and the distribution of recesses in each key being different, ii. said arrangements differing in the number of said blocking pins and in the number of said lateral recesses in said individual keys aligned with the second bores of the associated cylinders when said individual keys are in the respective operative position, iii. said blocking pins being of equal length and said second bores being of equal number in each of said arrangements; b. a master key shaped and dimensioned for axial movement in each key slot of said system toward and away from an operative position,
Claim 25
Dependent Claim
140 words
cooperating second cam means on said key and on said blocking pins for moving the receiving second portions outward of said second bores when said key moves axially away from said operative position, i. the distribution of said blocking pins of each arrangement and the distribution of recesses in each key being different, ii. said arrangements differing in the number of said blocking pins and in the number of said lateral recesses in said individual keys aligned with the second bores of the associated cylinders when said individual keys are in the respective operative position, iii. said blocking pins being of equal length and said second bores being of equal number in each of said arrangements; b. a master key shaped and dimensioned for axial movement in each key slot of said system toward and away from an operative position,
Claim 26
Dependent Claim
105 words
A system as set forth in claim 1, wherein said arrangements differ in the numbers of said blocking pins and in the numbers of said lateral recesses in said key aligned with the second bores of the associated cylinders when said key is in the operative position, the system further including a master key shaped and dimensioned for axial movement in each key slot of said system toward and away from an operative position, and being formed with a group of lateral recesses, the second bores of each cylinder being aligned with respective recesses of said group in the operative position of said master key.
Claim 27
Dependent Claim
107 words
A system as set forth in claim 1, wherein said arrangements differ in the axial spacing of said second blocking pins and the axial spacing of said lateral recesses in said key aligned with the second bores of the associated cylinders when said key is in the operative position, the system further including a master key shaped and dimensioned for axial movement in each key slot of said system toward and away from an operative position, and being formed with a group of lateral recesses, the second bores of each cylinder being aligned with respective recesses of said group in the operative position of said master key.
Claim 28
Dependent Claim
35 words
A system as set forth in claim 1, wherein said common plane is perpendicular to said plane in which said key slot extends, said lateral recesses being formed in said key contiguously adjacent said projections.
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |