US3858271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor-engaging mobile support devices for articles of furniture or the like
Assignee: Individual
•
Filing: 1972-11-20
•
Granted: 1975-01-07
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Expires: 1992-11-20
Abstract
Abstract A furniture castor or glide is disclosed having a pivoted body part designed to mount a castor rolling element and selectively fitted with a plain glide cap or with a cap having an aperture permitting the castor rolling element to project therethrough to provide a floor-engaging rolling surface which constitutes a sole load bearing surface on a hard smooth floor but which embeds into a soft floor surface, such as deep pile carpet, and shares the load-bearing function with a smooth convex undersurface of said cap, the cap and the underside of said body part having complementary abutting load-transmitting surface portions disposed inwards of the periphery of said cap.
Inventors
- 👤 Bernard Peter Fox Howard
- 👤 Ronald David Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:31
CPC Classifications
B; B60; B60B; B60B33/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
164 words
A floor-engaging mobile support device for articles of furniture and the like, said device comprising: a. a housing including a body portion and a bottom cap portion, b. means for pivotally mounting the housing so as to swivel about a vertical axis, c. said bottom cap portion extending over the uperside of the body portion and having an outer structural surface configuration effective to provide a gliding facility, d. a first load transmitting abutment means located in the body portion and including boss formations extending downwardly and providing supporting surfaces, and e. second load transmitting abutment means located in the bottom cap portion to be in confronting load bearing contact with said first load transmitting abutment means, f. said second load transmitting abutment means including means to receive the boss formations, g. said boss receiving means including confronting surfaces that contact said supporting surfaces, h. the body and bottom cap portions having inner surface configurations effective to form an interior cavity within said housing.
Claim 2
Dependent Claim
164 words
A floor-engaging mobile support device for articles of furniture and the like, said device comprising: a. a housing including a body portion and a bottom cap portion, b. means for pivotally mounting the housing so as to swivel about a vertical axis, c. said bottom cap portion extending over the uperside of the body portion and having an outer structural surface configuration effective to provide a gliding facility, d. a first load transmitting abutment means located in the body portion and including boss formations extending downwardly and providing supporting surfaces, and e. second load transmitting abutment means located in the bottom cap portion to be in confronting load bearing contact with said first load transmitting abutment means, f. said second load transmitting abutment means including means to receive the boss formations, g. said boss receiving means including confronting surfaces that contact said supporting surfaces, h. the body and bottom cap portions having inner surface configurations effective to form an interior cavity within said housing.
Claim 3
Dependent Claim
53 words
A device as defined in claim 1 wherein said boss receiving means include upstanding portions forming recesses which engage said boss formations, said boss formations being a part of a unitary construction forming the body portion, said bottom cap portion being permanently fixed to the body portion by adhesive disposed within said recesses.
Claim 4
Dependent Claim
44 words
A device as defined in claim 1 wherein said body portion includes a castor rolling element rotatably fitted within the interior cavity at a position offset from the vertical axis, said bottom cap portion includes an aperture through which the castor rolling element projects.
Claim 5
Dependent Claim
21 words
A device as defined in claim 3 wherein said body portion includes bearing means for rotatably conveying the castor rolling element.
Claim 6
Dependent Claim
31 words
A device as defined in claim 3 wherein the castor rolling element projects by not more than 3/16 inch below the lowest point of the undersurface of the bottom cap portion.
Claim 7
Dependent Claim
76 words
A device as defined in claim 3 wherein the body portion carries a separate bearing spindle which supports the castor rolling element, said castor rolling element having a generally barrel shaped profile with an axial bore which receives said bearing spindle and being composed of a plastic material, said body portion integrally formed therewith and including inverted U-shaped bearing apertures which cooperate through snap fit engagement with said bearing spindle to rotatably support said bearing spindle.
Claim 8
Dependent Claim
68 words
A device as defined in claim 1 wherein the outer structural surface configuration of the bottom cap portion has a convex curvature which extends symmetrically about the vertical swivel axis over at least the whole central area of said cap portion, said body and bottom cap portions including adjacent exterior surfaces which lie in flush fitting relationship to provide the device with a continuous smooth exterior surface profile.
Claim 9
Dependent Claim
49 words
A device as defined in claim 1 wherein said body portion includes a relativelY small diameter upper cylindrical hub section, an outwardly and downwardly flared shell section, and a lower skirt section having a relatively large diameter cylindrical exterior surface fitting in flush relationship with the bottom cap portion.
Claim 10
Dependent Claim
35 words
A device as defined in claim 8 wherein the lower skirt section has an annular groove and the bottom cap portion has a complementary upstanding annular rib which engages and locates within said annular groove.
Claim 11
Dependent Claim
91 words
A device as defined in claim 8 wherein the cylindrical hub section has an axial bore and the body portion includes a bearing cup fitted within said axial bore, said bearing cup being adapted to receive an upstanding pivot pin defining the vertical swivel axis and having a closed lower end and a flanged upper end, said upper end being seated within a stepped recess at the top of said hub section and being peened over a securing element located in said recess to provide an effective load transmitting thrust bearing.
Claim 12
Dependent Claim
32 words
A device as defined in claim 1 wherein said first and second load transmitting abutment means include supporting surfaces disposed at a location inwardly of the periphery of said bottom cap portion.
References Cited (Backward Citations)
US1012404A
Cited
US2169882A
Cited
US2495599A
Cited
US2803865A
Cited
US2885718A
Cited
US3186025A
Cited
US3345675A
Cited
US3445882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |