Patent US3936061A successfully refreshed from Google Patents.
US3936061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller skate
Assignee: Individual
•
Filing: 1974-04-05
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Granted: 1976-02-03
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Expires: 1994-04-05
Abstract
Abstract A roller skate, of the type of two-rollers, wherein two substantially spherical rotary elements are rotatably mounted on a support or chassis along its longitudinal axis, to give the feeling of ice skating to users.
Inventors
- 👤 Nobuhito Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:13
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/0086; A63C17/04; A63C17/06; A63C17/22; A63C17/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
A roller skate, comprising a support, two rotary elements each having a substantially spherical configuration, means for rotatably mounting each of said elements on said support along the longitudinal axis of said support, said mounting means comprising a bolt-nut assembly and each of said rotary elements having a central through bore, the bolt of said bolt-nut assembly extending through said bore to rotatably mount each of said elements, each of said rotary elements comprising a substantially spherical body formed with said central bore and bearing means inserted in said bore, said body comprising a synthetic material and said bearing means being comprised of an oilless graphite-containing alloy, said body being laminated and having an inner layer comprised of ABS resin and an outer layer comprised of rubber means.
Claim 2
Dependent Claim
128 words
A roller skate, comprising a support, two rotary elements each having a substantially spherical configuration, means for rotatably mounting each of said elements on said support along the longitudinal axis of said support, said mounting means comprising a bolt-nut assembly and each of said rotary elements having a central through bore, the bolt of said bolt-nut assembly extending through said bore to rotatably mount each of said elements, each of said rotary elements comprising a substantially spherical body formed with said central bore and bearing means inserted in said bore, said body comprising a synthetic material and said bearing means being comprised of an oilless graphite-containing alloy, said body being laminated and having an inner layer comprised of ABS resin and an outer layer comprised of rubber means.
Claim 3
Dependent Claim
20 words
A roller skate claimed in claim 1, including band means for placing on the roller skate without use of shoes.
Claim 4
Dependent Claim
120 words
A roller skate, comprising a support having a descending skirt portion formed with apertures; two rotary bodies, each having a substantially spherical configuration and having a laminated structure formed with a central through bore; bearing means inserted in said bore of said bodies; and a bolt-nut assembly for rotatably connecting each of said bodies to said support, said bodies being arranged on the underside of said support along a longitudinal central axis thereof, by inserting the bolt through said apertures formed in said skirt portion of said support and the bore formed in each of said body, said body having an inner hollow core member made of a ABS resin and an outer rubber member molded on said core member.
Claim 5
Dependent Claim
120 words
A roller skate, comprising a support having a descending skirt portion formed with apertures; two rotary bodies, each having a substantially spherical configuration and having a laminated structure formed with a central through bore; bearing means inserted in said bore of said bodies; and a bolt-nut assembly for rotatably connecting each of said bodies to said support, said bodies being arranged on the underside of said support along a longitudinal central axis thereof, by inserting the bolt through said apertures formed in said skirt portion of said support and the bore formed in each of said body, said body having an inner hollow core member made of a ABS resin and an outer rubber member molded on said core member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |