US3877268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock assembly with resilient latch
Assignee: Elixir Ind
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Filing: 1973-02-01
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Granted: 1975-04-15
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Expires: 1993-02-01
Abstract
Abstract A retainer cylinder is rotatably mounted in the bore of a housing cylinder and selectively latched against rotation by means of a resilient latching assembly. The housing cylinder is formed with a longitudinally extending groove and a corresponding recess is formed in the retainer cylinder. In one arrangement, the resilient latching assembly comprises a flat spring captured in the housing cylinder groove and having an intermediate portion resiliently urged into the retainer cylinder recess. A dog slidably mounted in the recess is cammed by a key to force the spring element from the recess and allow rotation of the retainer cylinder. In a second arrangement, the same housing cylinder allows for handle operation of a retainer cylinder wherein the latching assembly comprises a cam pin resiliently mounted in the retainer cylinder recess.
Inventors
- 👤 Paul H Shull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:13
CPC Classifications
E; E05; E05B; E05B27/00; E05C; E05C3/00; E05C3/02; E05C3/04; E05C3/041; E05C3/042; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7441; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7588; Y10T70/7593; Y10T70/7599; Y10T70/7667; Y10T70/7689
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
227 words
A lock assembly comprising a housing cylinder having a bore and a radially inwardly facing longitudinally extending groove formed therein, a retainer cylinder mounted for rotation in said bore and formed with a radially outwardly facing recess, a resilient latch assembly having a first portion secured to one of said cylinders and a second portion detachably secured to the other of said cylinders to thereby lock said retainer cylinder against rotation within the bore of said housing cylinder, said resilient latch assembly comprising an elongated flat spring element having first and second end sections captured within said housing cylinder groove and having an intermediate section offset from said end sections and detachably captured within the recess of said retainer cylinder, means for selectively releasing the engagement of said second portion of said resilient latch assembly from engagement with the other of said cylinders, said means for releasing the engagement of said second portion of said resilient latch assembly comprising a dog mounted to said retainer cylinder for movement radially thereof and having an outer portion thereof in contact with said intermediate section of said spring element, and means for shifting said dog radially outwardly of said retainer cylinder to move said intermediate section of said spring element out of said recess and thereby allow relative rotation of said retainer cylinder within the bore of said housing cylinder.
Claim 2
Dependent Claim
227 words
A lock assembly comprising a housing cylinder having a bore and a radially inwardly facing longitudinally extending groove formed therein, a retainer cylinder mounted for rotation in said bore and formed with a radially outwardly facing recess, a resilient latch assembly having a first portion secured to one of said cylinders and a second portion detachably secured to the other of said cylinders to thereby lock said retainer cylinder against rotation within the bore of said housing cylinder, said resilient latch assembly comprising an elongated flat spring element having first and second end sections captured within said housing cylinder groove and having an intermediate section offset from said end sections and detachably captured within the recess of said retainer cylinder, means for selectively releasing the engagement of said second portion of said resilient latch assembly from engagement with the other of said cylinders, said means for releasing the engagement of said second portion of said resilient latch assembly comprising a dog mounted to said retainer cylinder for movement radially thereof and having an outer portion thereof in contact with said intermediate section of said spring element, and means for shifting said dog radially outwardly of said retainer cylinder to move said intermediate section of said spring element out of said recess and thereby allow relative rotation of said retainer cylinder within the bore of said housing cylinder.
Claim 3
Dependent Claim
130 words
The latch assembly of claim 1 wherein said dog has a substantially T-shaped cross-section formed with a radially extending leg and an outwardly convex transverse arm having said outer portion, wherein said recess has a radially extending slot formed in an inner portion thereof, said slot extending longitudinally of said retainer cylinder, said leg of said dog being slidably mounted in said slot and said transverse arm of said dog beiNg in contact with said intermediate section of said spring element, and wherein said means for releasing engagement of the second portion of said latching assembly comprises said dog and an unlocking means detachably inserted into said retainer cylinder slot for camming said dog radially outwardly to thereby move said intermediate section of said spring element out of said recess.
Claim 4
Dependent Claim
37 words
The latch assembly of claim 2 wherein said transverse arm has a pair of depending flanges extending into said recess when said outermost portion of said arm is displaced outwardly of the periphery of said retainer cylinder.
Claim 5
Dependent Claim
26 words
The latch assembly of claim 2 wherein said recess and said transverse arm are wider than said groove, whereby said dog cannot inadvertently enter said groove.
Claim 6
Dependent Claim
172 words
A latch assembly comprising a housing cylinder having a bore, an inwardly facing longitudinal groove formed in said bore, a retainer cylinder rotatably mounted within said bore and having a radially outwardly facing longitudinal recess formed therein, a longitudinally extending keyway formed in said retainer cylinder communicating with said recess and with one end of said retainer cylinder, a dog mounted within said recess for radial movement relative to said retainer cylinder, said dog comprising an elongated substantially T-shaped cross-section member having a depending leg slidably received in said retainer cylinder keyway and having an outwardly convex cross-arm extending across said keyway within said retainer cylinder recess, a longitudinally extending spring resiliently compressed between said dog and said housing cylinder groove and having portions thereof captured within said groove, said spring having a latching portion captured within said recess, and cam means adapted to be inserted into said retainer cylinder keyway for urging the dog radially outwardly to thereby radially outwardly displace said spring element latching portion from said retainer cylinder recess.
Claim 7
Dependent Claim
172 words
A latch assembly comprising a housing cylinder having a bore, an inwardly facing longitudinal groove formed in said bore, a retainer cylinder rotatably mounted within said bore and having a radially outwardly facing longitudinal recess formed therein, a longitudinally extending keyway formed in said retainer cylinder communicating with said recess and with one end of said retainer cylinder, a dog mounted within said recess for radial movement relative to said retainer cylinder, said dog comprising an elongated substantially T-shaped cross-section member having a depending leg slidably received in said retainer cylinder keyway and having an outwardly convex cross-arm extending across said keyway within said retainer cylinder recess, a longitudinally extending spring resiliently compressed between said dog and said housing cylinder groove and having portions thereof captured within said groove, said spring having a latching portion captured within said recess, and cam means adapted to be inserted into said retainer cylinder keyway for urging the dog radially outwardly to thereby radially outwardly displace said spring element latching portion from said retainer cylinder recess.
Claim 8
Dependent Claim
212 words
A latch assembly comprising a housing cylinder having a bore, an inwardly facing longitudinal groove formed in said bore, a retainer cylinder rotatably mounted within said bore and having a radially outwardly facing recess formed therein, a longitudinally extending keyway formed in said retainer cylinder communicating with said recess and with one end of said retainer cylinder, a dog mounted within said recess for radial movement relative to said retainer cylinder, said dog comprising an elongated substantially T-shaped cross-section member having a depending leg slidably received in said retainer cylinder keyway and having an outwardly convex cross-arm extending across said keyway within said retainer cylinder recess, a spring resiliently compressed between said dog and said housing cylinder groove and having portions thereof captured within said groove, said spring having a latching portion captured within said recess, cam means adapted to be inserted into said retainer cylinder keyway for urging the dog radially outwardly to thereby radially outwardly displace said spring element latching portion from said retainer cylinder recess, said cross arm being formed with depending flanges on opposite sides thereof, said flanges extending into the recess of said retainer cylinder to prevent lateral displacement of said dog when the latter is moved radially outwardly to displace said spring element from said recess.
Claim 9
Dependent Claim
212 words
A latch assembly comprising a housing cylinder having a bore, an inwardly facing longitudinal groove formed in said bore, a retainer cylinder rotatably mounted within said bore and having a radially outwardly facing recess formed therein, a longitudinally extending keyway formed in said retainer cylinder communicating with said recess and with one end of said retainer cylinder, a dog mounted within said recess for radial movement relative to said retainer cylinder, said dog comprising an elongated substantially T-shaped cross-section member having a depending leg slidably received in said retainer cylinder keyway and having an outwardly convex cross-arm extending across said keyway within said retainer cylinder recess, a spring resiliently compressed between said dog and said housing cylinder groove and having portions thereof captured within said groove, said spring having a latching portion captured within said recess, cam means adapted to be inserted into said retainer cylinder keyway for urging the dog radially outwardly to thereby radially outwardly displace said spring element latching portion from said retainer cylinder recess, said cross arm being formed with depending flanges on opposite sides thereof, said flanges extending into the recess of said retainer cylinder to prevent lateral displacement of said dog when the latter is moved radially outwardly to displace said spring element from said recess.
Claim 10
Dependent Claim
33 words
The lock assembly of claim 6 wherein said recess is formed with longitudinally extending grooves for receiving said depending flanges when said dog is urged into said recess by the resiliently compressed spring.
Claim 11
Dependent Claim
180 words
A latch assembly comprising a housing cylinder having a bore, an inwardly facing longitudinal groove formed in said bore, a retainer cylinder rotatably mounted within said bore and having a radially outwardly facing recess formed therein, a longitudinally extending keyway formed in said retainer cYlinder communicating with said recess and with one end of said retainer cylinder, a dog mounted within said recess for radial movement relative to said retainer cylinder, said dog comprising an elongated substantially T-shaped cross-section member having a depending leg slidably received in said retainer cylinder keyway and having an outwardly convex cross-arm extending across said keyway within said retainer cylinder recess, a spring resiliently compressed between said dog and said housing cylinder groove and having portions thereof captured within said groove, said spring having a latching portion captured within sais recess, cam means adapted to be inserted into said retainer cylinder keyway for urging the dog radially outwardly to thereby radially outwardly displace said spring element latching portion from said retainer cylinder recess, said cross member and said recess both being wider than said groove.
Claim 12
Dependent Claim
180 words
A latch assembly comprising a housing cylinder having a bore, an inwardly facing longitudinal groove formed in said bore, a retainer cylinder rotatably mounted within said bore and having a radially outwardly facing recess formed therein, a longitudinally extending keyway formed in said retainer cYlinder communicating with said recess and with one end of said retainer cylinder, a dog mounted within said recess for radial movement relative to said retainer cylinder, said dog comprising an elongated substantially T-shaped cross-section member having a depending leg slidably received in said retainer cylinder keyway and having an outwardly convex cross-arm extending across said keyway within said retainer cylinder recess, a spring resiliently compressed between said dog and said housing cylinder groove and having portions thereof captured within said groove, said spring having a latching portion captured within sais recess, cam means adapted to be inserted into said retainer cylinder keyway for urging the dog radially outwardly to thereby radially outwardly displace said spring element latching portion from said retainer cylinder recess, said cross member and said recess both being wider than said groove.
Claim 13
Dependent Claim
68 words
The lock assembly of claim 5 wherein said spring comprises a substantially flat elongated spring body having first and second end portions displaced from the plane of the main body thereof, said end portions being captured within the groove of said housing cylinder and a portion of said main body being resiliently urged into said recess and toward said dog for engagement with the convex cross arm thereof.
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) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |