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US4355567A Expired / Lapsed US ⏱️ 0.0 years remaining

Pivoted blade damper and pin

Assignee: RJC ENTERPRISES Inc
•
Filing: 1980-02-28
•
Granted: 1982-10-26
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Expires: 2000-02-28
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Abstract

Abstract A mounting pin for a pivoted damper blade is disclosed which comprises a cylindrical shaft having a cenrtrally positioned hole extending therethrough, this hole being surrounded on one side of the pin with an upstanding flat seat. This hole is longer than it is wide so that it extends longitudinally of the pin. Also, the pin at one side of the seat is formed to include longitudinal depressions which provide a plurality of circumferentially spaced arc segments which form an interrupted circle. This pin is mounted on a blade at a side margin thereof by means of a bolt extending through a hole in the blade and through the hole in the pin, and a nut is associated with the bolt, the nut locking against the flat seat of the pin. A resilient gasket is interposed between the head of the bolt and the rear face of the blade so that the bolt need not be held while the nut is tightened. Also, a locking washer is desirably interposed between the nut and the seat.

Inventors

  • 👤 Louis Josephson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 03:17
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1486; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426; Y10T403/71; Y10T403/7123

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 109 words
In combination a pivoted blade having a mounting pin comprising a cylindrical shaft having a centrally positioned hole extending therethrough, said hole being surrounded on one side of the pin with an upstanding flat seat, and said hole being longer than it is wide so that it extends longitudinally of the pin, said mounting pin being mounted at a side margin of said blade in a pin-receiving depression in said blade by means of a bolt extending through a hole in said blade and through the longitudinally extending hole in said pin, and a nut associated with said bolt, said nut locking against the flat seat of said pin.
Claim 2
Dependent Claim 109 words
In combination a pivoted blade having a mounting pin comprising a cylindrical shaft having a centrally positioned hole extending therethrough, said hole being surrounded on one side of the pin with an upstanding flat seat, and said hole being longer than it is wide so that it extends longitudinally of the pin, said mounting pin being mounted at a side margin of said blade in a pin-receiving depression in said blade by means of a bolt extending through a hole in said blade and through the longitudinally extending hole in said pin, and a nut associated with said bolt, said nut locking against the flat seat of said pin.
Claim 3
Dependent Claim 27 words
A combination as recited in claim 1 in which a resilient gasket is interposed between the head of the bolt and the rear face of the blade.
Claim 4
Dependent Claim 20 words
A combination as recited in claim 1 in which a locking washer is interposed between said nut and said seat.
Claim 5
Dependent Claim 15 words
A combination as recited in claim 1 in which said nut is a "Kep" nut.
Claim 6
Dependent Claim 43 words
A combination as recited in claim 1 in which one side of said pin extends beyond the side margin of said blade and is formed to include longitudinal depressions which provide a plurality of circumferentially spaced arc segments which form an interrupted circle.
Claim 7
Dependent Claim 14 words
A combination as recited in claim 1 in which said pin is die cast.

References Cited (Backward Citations)

US240387A Cited
US493363A Cited
DE365330C Cited
US2146142A Cited
US2183292A Cited
US2396005A Cited
US3156446A Cited
US3260018A Cited
US3487768A Cited
US3718081A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-10-25 1986-04-26 1986-10-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-10-25 1990-04-26 1990-10-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-10-25 1994-04-26 1994-10-26 $7700.00 Window Closed / Lapsed

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