Patent US3813149A successfully refreshed from Google Patents.
US3813149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivotal mounting device for stadium seats and the like
Assignee: LAWRENCE BROTHERS INC US
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Filing: 1971-12-23
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Granted: 1974-05-28
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Expires: 1991-12-23
Abstract
Abstract The present invention relates generally to improvements in pivotal mounting devices for stadium seats and the like and more particularly to novel and practical pivotal mounting arrangements which will assure maintenance of stadium seats and the like in an upright position and also enable a user conveniently to shift the seat from upright to its normal position for occupancy. The mounting device disclosed herein comprises a stub shaft, one extremity of which is peripherally splined for attachment to a fixed frame member, the opposite extremity being threaded to accommodate a clamping nut member. Interposed between the splined extremity and the clamping nut is a spherical bearing arrangement to compensate for variations in seat installations. Friction means encircling the stub shaft seals the mounting from moisture and assures maintenance of a seat member in upright position when not in use.
Inventors
- 👤 E Lawrence
- 👤 D Mcninch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:42
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
289 words
A pivotable mounting device for tiltable stadium seats and the like, including a first bearing means for providing a rotatable journal for a tiltable seat section relative to a stationary upright seat section, and second bearing means for establishing frictional contact with said tiltable seat section which contact will be sufficient to maintain said seat section in the upright position; said mounting device comprising: a shaft member having mounting means on one end thereof for connection in a substantially horizontal, fixed position to a stationary upright seat section, and said shaft having said first and said second bearing means carried thereon, said first bearing means comprising a bearing member carried by said shaft, a race member mounted about said bearing member and having an inner surface complemental to the outer surface of said bearing member and being freely rotatable relative thereto, said race member being adapted for mounting to a tiltable seat section for movement therewith, and said second bearing means comprising a plastic washer member carried on said shaft intermediate said first bearing means and said means for mounting said shaft to said stationary seat section, said plastic washer having a bearing surface thereon which is engageable against a corresponding bearing surface on a tiltable seat section, and a yieldable elastomeric washer member interposed between said shaft mounting means and said plastic washer for compression between said plastic washer and an adjacent surface on said stationary seat section, with said elastomeric washer, when compressed, adapted to force said plastic washer into engagement with the corresponding bearing surface on said tiltable seat section to establish the necessary frictional contact; and means on the opposite ends of said shaft for maintaining said first and second bearing means in position thereon.
Claim 2
Dependent Claim
289 words
A pivotable mounting device for tiltable stadium seats and the like, including a first bearing means for providing a rotatable journal for a tiltable seat section relative to a stationary upright seat section, and second bearing means for establishing frictional contact with said tiltable seat section which contact will be sufficient to maintain said seat section in the upright position; said mounting device comprising: a shaft member having mounting means on one end thereof for connection in a substantially horizontal, fixed position to a stationary upright seat section, and said shaft having said first and said second bearing means carried thereon, said first bearing means comprising a bearing member carried by said shaft, a race member mounted about said bearing member and having an inner surface complemental to the outer surface of said bearing member and being freely rotatable relative thereto, said race member being adapted for mounting to a tiltable seat section for movement therewith, and said second bearing means comprising a plastic washer member carried on said shaft intermediate said first bearing means and said means for mounting said shaft to said stationary seat section, said plastic washer having a bearing surface thereon which is engageable against a corresponding bearing surface on a tiltable seat section, and a yieldable elastomeric washer member interposed between said shaft mounting means and said plastic washer for compression between said plastic washer and an adjacent surface on said stationary seat section, with said elastomeric washer, when compressed, adapted to force said plastic washer into engagement with the corresponding bearing surface on said tiltable seat section to establish the necessary frictional contact; and means on the opposite ends of said shaft for maintaining said first and second bearing means in position thereon.
Claim 3
Dependent Claim
36 words
A mounting device as defined in claim 1 wherein said bearing member of said first bearing means includes a spherical, outer surface and said inner surface of said race member is of a complemental, spherical configuration.
Claim 4
Dependent Claim
299 words
In combination: a stadium seat structure comprising an upright seat section, a tiltable seat section, and a pivotable mounting device joining said tiltable seat section to said upright section; said mounting device including a first bearing means for providing a rotatable journal for said tiltable seat section relative to said upright section, and second bearing means for establishing frictional contact with said tiltable seat section which contact will be sufficient to maintain said seat section in the upright position; said mounting device comprising: a shaft member having mounting means on one end thereof for connection in a substantially horizontal, fixed position to said stationary seat section, and said shaft having said first and said second bearing means carried thereon, said first bearing means comprising a bearing member carried by said shaft, a race member mounted about said bearing member and having an inner surface complemental to the outer surface of said bearing member and being freely rotatable relative thereto, said race member being mounted to said tiltable seat section for movement therewith, and said second bearing means comprising a plastic washer member carried on said shaft intermediate said first bearing means and said means mounting said shaft to said stationary seat section, said plastic washer having a bearing surface thereon which is engaged against a corresponding bearing surface on said tiltable seat section, and a yieldable elastomeric washer member interposed between said shaft mounting means and said plastic washer for compression between said plastic washer and an adjacent surface on said stationary seat frame, with said elastomeric washer forcing said plastic washer into engagement with the corresponding bearing surface on said tiltable seat section to establish the necessary frictional contact; and means on the opposite ends of said shaft maintaining said first and second bearing means in position thereon.
Claim 5
Dependent Claim
299 words
In combination: a stadium seat structure comprising an upright seat section, a tiltable seat section, and a pivotable mounting device joining said tiltable seat section to said upright section; said mounting device including a first bearing means for providing a rotatable journal for said tiltable seat section relative to said upright section, and second bearing means for establishing frictional contact with said tiltable seat section which contact will be sufficient to maintain said seat section in the upright position; said mounting device comprising: a shaft member having mounting means on one end thereof for connection in a substantially horizontal, fixed position to said stationary seat section, and said shaft having said first and said second bearing means carried thereon, said first bearing means comprising a bearing member carried by said shaft, a race member mounted about said bearing member and having an inner surface complemental to the outer surface of said bearing member and being freely rotatable relative thereto, said race member being mounted to said tiltable seat section for movement therewith, and said second bearing means comprising a plastic washer member carried on said shaft intermediate said first bearing means and said means mounting said shaft to said stationary seat section, said plastic washer having a bearing surface thereon which is engaged against a corresponding bearing surface on said tiltable seat section, and a yieldable elastomeric washer member interposed between said shaft mounting means and said plastic washer for compression between said plastic washer and an adjacent surface on said stationary seat frame, with said elastomeric washer forcing said plastic washer into engagement with the corresponding bearing surface on said tiltable seat section to establish the necessary frictional contact; and means on the opposite ends of said shaft maintaining said first and second bearing means in position thereon.
Claim 6
Dependent Claim
29 words
The combination as defined in claim 3, wherein the bearing surfaces on said plastic washer and said tiltable seat section are provided by mutually cooperating concave and convex surfaces.
Claim 7
Dependent Claim
35 words
The combination as defined in claim 3, wherein said bearing member of said first bearing means includes a spherical outer surface and said inner surface of said race member is of a complemental, spherical configuration.
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |