US3856339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable knob for a lock
Assignee: Schlage Lock Co LLC
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Filing: 1973-04-09
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Granted: 1974-12-24
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Expires: 1993-04-09
Abstract
Abstract A releasable knob for a lock having a body adapted to be installed in a door panel and having a hollow spindle rotatable in the body about an axis to operate a lock bolt, has an inner knob member mounted on the spindle and secured thereto against relative rotation about the axis and against axial movement thereon. An outer knob member substantially encloses the inner knob member and is rotatable relative thereto about the axis but is not axially movable relative thereto. If desired a lock mechanism may be disposed partly in the spindle and partly in the inner knob member. A locking bar, preferably sliding in an axial slot in the spindle, is movable between one position coupling the inner and outer knob members and another position decoupling the inner and outer knob members. Preferably the locking bar is spring urged in one direction and is manually returned or operated from the side of the lock opposite the releasable knob.
Inventors
- 👤 J Tornoe
- 👤 C Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:44
CPC Classifications
E; E05; E05B; E05B13/00; E05B13/005; E05B3/00; E05B3/003; Y; Y10; Y10T; Y10T292/00; Y10T292/57; Y10T292/85; Y10T292/865
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
167 words
A releasable knob for a lock having a body and having a spindle with an axially extending slot rotatable relative to said body about an axis comprising a first knob member, means for mounting said first knob member for rotation about said axis, means for connecting said first knob member and said spindle for conjoint rotation about said axis, a second knob member, means for mounting said second knob member around said first knob member for rotation relative thereto about said axis, means forming an axially extending first groove in one of said knob members, means forming an axially extending second groove in the other of said knob members adapted in one relatively rotated position of said knob members to be in axial alignment with said first groove, a locking bar, means for mounting said locking bar in said spindle slot for movement in an axial direction between one position disengnaged from one of said grooves and a second position in engagement with both of said grooves.
Claim 2
Dependent Claim
167 words
A releasable knob for a lock having a body and having a spindle with an axially extending slot rotatable relative to said body about an axis comprising a first knob member, means for mounting said first knob member for rotation about said axis, means for connecting said first knob member and said spindle for conjoint rotation about said axis, a second knob member, means for mounting said second knob member around said first knob member for rotation relative thereto about said axis, means forming an axially extending first groove in one of said knob members, means forming an axially extending second groove in the other of said knob members adapted in one relatively rotated position of said knob members to be in axial alignment with said first groove, a locking bar, means for mounting said locking bar in said spindle slot for movement in an axial direction between one position disengnaged from one of said grooves and a second position in engagement with both of said grooves.
Claim 3
Dependent Claim
45 words
A device as in claim 1 including means for urging said locking bar toward one of said positions, and means movable alongside said axis within said first knob member for overcoming said urging means and moving said locking bar toward the other of said positions.
Claim 4
Dependent Claim
30 words
A device as in claim 1 in which said spindle has a tubular wall with said axially extending slot therein, and said locking bar is axially movable in said slot.
Claim 5
Dependent Claim
30 words
A device as in claim 3 in which said slot has a predetermined radial dimension and at least a portion of said locking bar has approximately the same radial dimension.
Claim 6
Dependent Claim
125 words
A releasable knob for a lock having a body and having a spindle rotatable relative to said body about an axis, a knob member, means for mounting said knob member on said spindle for rotation relative thereto about said axis, first means effective in one position for locking said knob member to said spindle for rotation in unison therewith about said axis and effective in a second position to free said knob member for rotation thereof about said axis independently of said spindle, and second means effective in one position for locking said spindle to said body against rotation of said spindle about said axis and effective in a second position to free said spindle from said body for independent rotation thereof about said axis.
Claim 7
Dependent Claim
125 words
A releasable knob for a lock having a body and having a spindle rotatable relative to said body about an axis, a knob member, means for mounting said knob member on said spindle for rotation relative thereto about said axis, first means effective in one position for locking said knob member to said spindle for rotation in unison therewith about said axis and effective in a second position to free said knob member for rotation thereof about said axis independently of said spindle, and second means effective in one position for locking said spindle to said body against rotation of said spindle about said axis and effective in a second position to free said spindle from said body for independent rotation thereof about said axis.
Claim 8
Dependent Claim
20 words
A device as in claim 5 including means for substantially simultaneously operating both of said first and second locking means.
Claim 9
Dependent Claim
29 words
A device as in claim 5 including means for simultaneously placing said first locking means in said second position and placing said second locking means in said first position.
Claim 10
Dependent Claim
19 words
A device as in claim 7 in which said placing means is a member movable axially within said spindle.
Claim 11
Dependent Claim
131 words
A releasable knob adapted for use with a circular spindle rotatable about a central axis and having an axially extending slot in the periphery thereof and having a socket in the periphery thereof, a first knob member having a recess therein and having a circular bore fitting on said spindle for relative axial sliding and rotational movement about said axis, means fitting said recess and said socket for preventing said relative axial and rotational movement of said first knob member and said spindle, a second knob member substantially surrounding said first knob member and rotatable relative thereto about said axis, means for limiting relative axial movement of said first and second knob members, and means disposed in said slot for limiting relative rotational movement of said first and second knob members.
Claim 12
Dependent Claim
131 words
A releasable knob adapted for use with a circular spindle rotatable about a central axis and having an axially extending slot in the periphery thereof and having a socket in the periphery thereof, a first knob member having a recess therein and having a circular bore fitting on said spindle for relative axial sliding and rotational movement about said axis, means fitting said recess and said socket for preventing said relative axial and rotational movement of said first knob member and said spindle, a second knob member substantially surrounding said first knob member and rotatable relative thereto about said axis, means for limiting relative axial movement of said first and second knob members, and means disposed in said slot for limiting relative rotational movement of said first and second knob members.
Claim 13
Dependent Claim
122 words
A releasable knob adapted for use with a hollow spindle rotatable about a central axis and having an axially extending slot and an axially extending channel therein, a circular lock body disposed in said hollow spindle, an axial wing on said lock body extending for a predetermined radial distance therefrom and disposed in said channel, a first knob member mounted around said spindle and having an axial slot extending for substantially said radial distance to receive said wing, a second knob member mounted on said first knob member solely for rotation relative thereto about said axis and overlying said channel, and means at least partly in said slot for locking said second knob member against said rotation on said first knob member.
Claim 14
Dependent Claim
122 words
A releasable knob adapted for use with a hollow spindle rotatable about a central axis and having an axially extending slot and an axially extending channel therein, a circular lock body disposed in said hollow spindle, an axial wing on said lock body extending for a predetermined radial distance therefrom and disposed in said channel, a first knob member mounted around said spindle and having an axial slot extending for substantially said radial distance to receive said wing, a second knob member mounted on said first knob member solely for rotation relative thereto about said axis and overlying said channel, and means at least partly in said slot for locking said second knob member against said rotation on said first knob member.
Claim 15
Dependent Claim
77 words
A releasable knob comprising an inner knob portion having a central bore therein and rotatable about a central axis, an outer knob portion substantially surrounding said inner knob portion and rotatable relative to said inner knob portion about said axis, and means engaging both of said knob portions for holding both of said knob portions against relative rotation about said axis, said means being disposed within said outer knob portion and radially outside of said central bore.
Claim 16
Dependent Claim
77 words
A releasable knob comprising an inner knob portion having a central bore therein and rotatable about a central axis, an outer knob portion substantially surrounding said inner knob portion and rotatable relative to said inner knob portion about said axis, and means engaging both of said knob portions for holding both of said knob portions against relative rotation about said axis, said means being disposed within said outer knob portion and radially outside of said central bore.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |