US3758920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pull knob assembly with interchangeable plug inserts
Assignee: Coats and Clark Inc
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Filing: 1972-07-17
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Granted: 1973-09-18
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Expires: 1992-07-17
Abstract
Abstract A pull knob assembly utilized for attachment to doors drawers and the like. The assembly comprises a body portion having a flange to be grasped for opening and closing of the door. A set of interchangeable plug elements fit within the body portion. One plug element is completely enclosed within the body portion while the other plug element projects slightly therefrom to provide a mounting for a grasping element to be used instead of the flange. A complete knob unit is assembled by inserting a plug element into the body portion, and this includes an internal fastening device that cooperates with an external fastening device for mounting the knob unit on the door. The internal fastening device may be formed either in the plug element or it may be formed in the body portion, in which case the plug element is formed with leg members slidably mounted on either side of the internal fastening device.
Inventors
- 👤 F Flagg
- 👤 L Chasen
- 👤 L Dobrjanskyj
- 👤 R Einhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:11
CPC Classifications
A; A47; A47B; A47B95/00; A47B95/02; A47B2095/021
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
130 words
A knob assembly comprising a body portion of a predetermined longitudinal dimension having opening means extending therethrough; a first plug element having a longitudinal dimension substantially the same as said predetermined longitudinal dimension and adapted to fit and be substantially enclosed within said opening means; a second plug element having a longitudinal dimension slightly greater than said predetermined longitudinal dimension and adapted to fit within said opening so that a portion thereof protrudes therefrom; said body portion and a selected one of said plug elements fitted therein forming a knob unit adapted for mounting on a base surface; internal fastening means located within said knob unit; and external fastening means adapted to cooperate with said internal fastening means for effecting the mounting of said knob unit on the base surface.
Claim 2
Dependent Claim
130 words
A knob assembly comprising a body portion of a predetermined longitudinal dimension having opening means extending therethrough; a first plug element having a longitudinal dimension substantially the same as said predetermined longitudinal dimension and adapted to fit and be substantially enclosed within said opening means; a second plug element having a longitudinal dimension slightly greater than said predetermined longitudinal dimension and adapted to fit within said opening so that a portion thereof protrudes therefrom; said body portion and a selected one of said plug elements fitted therein forming a knob unit adapted for mounting on a base surface; internal fastening means located within said knob unit; and external fastening means adapted to cooperate with said internal fastening means for effecting the mounting of said knob unit on the base surface.
Claim 3
Dependent Claim
20 words
A knob assembly according to claim 1 wherein grasping means is mounted on said protruding portion of said second plug.
Claim 4
Dependent Claim
19 words
A knob assembly according to claim 2 wherein said grasping means is provided in the shape of a ring.
Claim 5
Dependent Claim
28 words
A knob assembly according to claim 1 wherein said body portion comprises an elongated body having a flange on one end with said opening means centrally extending therethrough.
Claim 6
Dependent Claim
33 words
A knob assembly according to claim 4 wherein said first plug comprises an elongated body member having said internal fastening means located therein in the form of a central bore extending partway therein.
Claim 7
Dependent Claim
33 words
A knob assembly according to claim 5 wherein said external fastening means comprises a self-tapping screw adapted to pass through and cut threads in the surface of said bore and be received therein.
Claim 8
Dependent Claim
33 words
A knob assembly according to claim 2 wherein said second plug comprises an elongated body member having said internal fastening means located therein in the form of a central bore extending partway therein.
Claim 9
Dependent Claim
33 words
A knob assembly according to claim 7 wherein said external fastening means comprises a self-tapping screw adapted to pass through and cut threads in the surface of said bore and be received therein.
Claim 10
Dependent Claim
26 words
A knob assembly according to claim 5 wherein said first plug includes an enlarged head at one end thereof, and said elongated body member extends therefrom.
Claim 11
Dependent Claim
46 words
A knob assembly according to claim 9 wherein said body portion has a recess centrally located within said flange, and said enlarged head is sized to snugly fit within said recess, a remote end of said enlarged head thereupon forming a flush surface with said flange.
Claim 12
Dependent Claim
31 words
A knob assembly according to claim 7 wherein said second plug includes an enlarged head at one end thereof which includes said protruding portion, and said elongated body member extends therefrom.
Claim 13
Dependent Claim
45 words
A knob assembly according to claim 11 wherein said body portion has a recess centrally located therein, and said enlarged head is sized to partially fit within said recess in a snug relation, the protruding portion of said enlarged head including the grasping means mounting.
Claim 14
Dependent Claim
41 words
A knob assembly according to claim 1 wherein said Body portion comprises an elongated body having a flange on one end, and said opening means comprises a pair of openings spaced on each side of a centerline of said body portion.
Claim 15
Dependent Claim
26 words
A knob assembly according to claim 13 wherein said body portion has said internal fastening means formed therein as a central bore located between said openings.
Claim 16
Dependent Claim
33 words
A knob assembly according to claim 14 wherein said external fastening means comprises a self-tapping screw adapted to pass through and cut threads in the surface of said bore and be received therein.
Claim 17
Dependent Claim
47 words
A knob assembly according to claim 13 wherein said first and second plug elements each comprise an longated head from which an elongated body member extends in the form of a pair of leg members spaced to correspond with said body portion openings and be received therein.
Claim 18
Dependent Claim
40 words
A knob assembly according to claim 16 wherein said body portion includes a recess centrally located within said flange, and said enlarged head of such of said first and second plug elements is adapted to snugly fit within said recess.
Claim 19
Dependent Claim
23 words
A knob assembly according to claim 17 wherein said enlarged head of said first plug element forms a flush surface with said flange.
Claim 20
Dependent Claim
28 words
A knob assembly according to claim 17 wherein said enlarged head of said second plug element forms said protruding portion so that grasping means can be mounted thereon.
Claim 21
Dependent Claim
41 words
A knob assembly according to claim 17 wherein said recess has a predetermined depth terminating in a flat transverse surface, and said enlarged head is positionable to abut said flat surface whereby said leg members extend beyond ends of said openings.
Claim 22
Dependent Claim
69 words
A knob assembly according to claim 16 wherein said openings have a predetermined transverse dimension and ends of said openings remote from said flange include respective portions having an enlarged transvese dimension, said leg members having a transverse dimension less than said predetermined transverse dimension, and remote ends of said leg members include respective enlarged portions adapted to fit within the portions of said openings with enlarged transverse dimensions.
Claim 23
Dependent Claim
33 words
A knob assembly according to claim 21 wherein said openings are curved to be concentric about a centerline of said body portion and said leg members are correspondingly curved to be received therein.
Claim 24
Dependent Claim
52 words
A knob assembly according to claim 21 wherein said enlarged portions of said openings and said leg members extend along the line of curvature from individual opposite sides thereof, respectively, thereby allowing said enlarged portions of said leg members to slide into said enlarged portions of said openings upon relative rotation therebetween.
Claim 25
Dependent Claim
94 words
A knob assembly according to claim 16 wherein said openings are concentrically curved, respectively, around a centerline of said body portion, said openings have a predetermined transverse dimension along the line of curvature, ends of said openings remote from said flange include enlarged portions extending further along the line of curvature to form a notched section, a wire element is received in each said notched section, and said leg members each have an outwardly projecting section at their remote ends adapted to abut said wire to be held in locking engagement within said openings.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |