US3704608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locking arrangement for deadbolt latch locks, especially for hotel guest room doors
Assignee: Eaton Yale and Towne GmbH
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Filing: 1970-04-29
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Granted: 1972-12-05
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Expires: 1990-04-29
Abstract
Abstract An inside turn knob is equipped with an axially movable coupling member spring pressed to position coupling the knob to a deadbolt operating cam. A guest key inserted into an outside tumbler cylinder will press the coupling member to release position so that the key when rotating a latchbolt operating cam and the turn knob will not rotate the deadbolt cam. A manager''s key is relatively short and will not depress the coupling member, and therefore can rotate the deadbolt cam along with the latchbolt cam.
Inventors
- 👤 Heinz Kloosterziel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:10
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0032; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5155; Y10T70/5199; Y10T70/5226; Y10T70/70; Y10T70/7441; Y10T70/7446; Y10T70/7463; Y10T70/7486; Y10T70/7508; Y10T70/7559; Y10T70/7667; Y10T70/7706; Y10T70/7712
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
207 words
In locking mechanism especially suited for guest rooms in hotels, and having a pin tumbler cylinder plug which is operated from outside by key, and turn knob which is aRranged on the inside of the door coaxially with the cylinder, as well as a latch retracting cam hub and a deadbolt operating cam hub which are arranged between the cylinder and the turn knob in a manner which allows them to rotate, characterized in that the latch retracting cam hub (17) is in constant engagement with the turn knob in a manner which does not allow rotation of said latch retracting cam hub elative to said turn knob, and that said latch retracting cam hub is operated by the guest key as well as by the manager''s key (4 and 24 resp.) and that a coupling member (13, 14, 21) is arranged coaxial with the turn knob in a manner not allowing rotary motion but allowing axial movement relative to the turn knob and comprises means coupling the turn knot (10) with the deadbolt operating cam hub (15) when the manager''s key (24) is inserted as well as when the keys (4, 24) are removed, but which disconnects this coupling when the guest key (4) is inserted.
Claim 2
Dependent Claim
207 words
In locking mechanism especially suited for guest rooms in hotels, and having a pin tumbler cylinder plug which is operated from outside by key, and turn knob which is aRranged on the inside of the door coaxially with the cylinder, as well as a latch retracting cam hub and a deadbolt operating cam hub which are arranged between the cylinder and the turn knob in a manner which allows them to rotate, characterized in that the latch retracting cam hub (17) is in constant engagement with the turn knob in a manner which does not allow rotation of said latch retracting cam hub elative to said turn knob, and that said latch retracting cam hub is operated by the guest key as well as by the manager''s key (4 and 24 resp.) and that a coupling member (13, 14, 21) is arranged coaxial with the turn knob in a manner not allowing rotary motion but allowing axial movement relative to the turn knob and comprises means coupling the turn knot (10) with the deadbolt operating cam hub (15) when the manager''s key (24) is inserted as well as when the keys (4, 24) are removed, but which disconnects this coupling when the guest key (4) is inserted.
Claim 3
Dependent Claim
124 words
Locking mechanism according to claim 1, characterized in that the latch retracting cam hub (17) is mounted in position intermediate the pin tumbler cylinder plug (2) and the deadbolt operating cam hub (15), and that the coupling member (13) is supported in a boring (10'''') in the turn knob (10) and movable in that boring against the action of a compression spring (12), said coupling member (13) being provided with a laterally projecting coupling rib (14) coacting with a coupling slot (15'') in the deadbolt operating cam hub (15), as well as with a contact piece (21) having a key engaging slot (21'') at its front end, and that the guest key (4) has an extended tip (20) for engaging said key engaging slot.
Claim 4
Dependent Claim
83 words
Locking mechanism according to claim 2, characterized in that the contact piece (21) is connected to the coupling member (13) in a manner not allowing rotary motion, and is provided with a guide pin (23) which is axially movable against the action of a spring (22) in a reduced portion of the longitudinal boring in the turn knob, and that the coupling rib (14) formed on the coupling member (13) is guided in an axially extending guide slot (10'''''') in the turn knob.
Claim 5
Dependent Claim
44 words
Locking mechanism according to claim 1, characterized in that the deadbolt operating cam hub (15) is provided with a ring-shaped collar (16) against which a spring (26) presses a brake pin (25) that is radially movable in the shell of the pin tumbler cylinder.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |