Patent US3819060A successfully refreshed from Google Patents.
US3819060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping apparatus
Assignee: Miner Enterprises Inc
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Filing: 1973-08-17
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Granted: 1974-06-25
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Expires: 1993-08-17
Abstract
Abstract The cushioning assembly of this invention has an elongated housing with one closed end wall and a cylindrical passageway extending lengthwise from the closed end wall. A damped spring cartridge unit is slidingly mounted within the cylindrical passageway with its piston in an abutting engagement with the closed end wall. The other end of the damped spring unit projects outwardly of the housing and is in abutting engagement with a force transfer member extending crosswise to the axis of the housing. The damping apparatus of this invention is included within the damped spring cartridge unit. The damping apparatus employs the use of a piston head assembly which comprises a fixed annular disc with a gap or space located between the periphery of the fixed annular disc and the wall of the damping chamber. The fixed member includes an axial extension upon which is slidably mounted a movable member. The movable member is slidable between the damping position and a return position. With the movable member in contact with the fixed member (damping position) the gap is closed preventing movement of the damping medium from one side of the piston head to the other side of the piston head. Upon the damping force reaching a predetermined level, the fixed member is tiltable thereby causing the fixed member to be displaced thereby permitting the damping medium to be conducted through said gap.
Inventors
- 👤 G Kendall
- 👤 W Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:10
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04; B61G9/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
170 words
A damping apparatus comprising: a cylinder having an elongated interior chamber with one end being open and the other end being closed; a piston rod extending within said chamber, said piston rod being movable with respect to said chamber; a piston head connected to said piston rod, said piston head including a first member fixed to said piston rod and extending laterally therefrom, said first member located adjacent the wall of said chamber but spaced therefrom to form a gap therebetween; a damping medium located within said chamber in between said piston head and said closed end; a second member mounted upon said piston head, said second member capable of being in contact with both said first member and the wall of said chamber, said second member includes means for permitting said first member to deflect in respect to said second member, upon a predetermined level of damping force being achieved said first member deflects thereby permitting said damping medium to be conducted through said gap past said first member.
Claim 2
Dependent Claim
170 words
A damping apparatus comprising: a cylinder having an elongated interior chamber with one end being open and the other end being closed; a piston rod extending within said chamber, said piston rod being movable with respect to said chamber; a piston head connected to said piston rod, said piston head including a first member fixed to said piston rod and extending laterally therefrom, said first member located adjacent the wall of said chamber but spaced therefrom to form a gap therebetween; a damping medium located within said chamber in between said piston head and said closed end; a second member mounted upon said piston head, said second member capable of being in contact with both said first member and the wall of said chamber, said second member includes means for permitting said first member to deflect in respect to said second member, upon a predetermined level of damping force being achieved said first member deflects thereby permitting said damping medium to be conducted through said gap past said first member.
Claim 3
Dependent Claim
18 words
The damping apparatus as defined in claim 1 wherein: said first member being annular, said gap being annular.
Claim 4
Dependent Claim
17 words
The damping apparatus as defined in claim 2 wherein: said damping medium comprises a compressible solid material.
Claim 5
Dependent Claim
39 words
The damping apparatus as defined in claim 2 wherein: said first member includes an axial extension, said secOnd member being mounted upon said axial extension, whereby said second member works directly against said first member during said tilting movement.
Claim 6
Dependent Claim
71 words
The damping apparatus as defined in claim 4 wherein: said second member being slidably mounted upon said axial extension between a damping position and a return position, with said second member in contact with said first member said gap being capable of being closed to thereby not permit passage of said damping medium therethrough, with said second member in said return position said damping medium being readily conductible through said gap.
Claim 7
Dependent Claim
42 words
The damping apparatus as defined in claim 5 wherein: said second member being ring-shaped in configuration, said second member including a plurality of spaced apart apertures therethrough, said apertures being adapted to conduct said damping medium into and out of said chamber.
Claim 8
Dependent Claim
140 words
The damping apparatus as defined in claim 6 wherein said means comprises: said second member having an annular groove in the side of said second member adjacent said first member, said annular groove to communicate with said apertures, a radially inner wall and a radially outer wall being formed on said second member located on each side of said annular groove, with said radially inner wall in normal contact with said first member said radially outer wall being displaced slightly from said first member, whereby upon the force within said damping medium reaching a predetermined level said first member is caused to be deflect so said radially outer wall comes into contact with said first member and said radially inner wall is displaced from said first member so as to permit the damping medium to be conducted through said gap.
Claim 9
Dependent Claim
38 words
The damping apparatus as defined in claim 7 wherein: said first member also includes opening means therethrough, whereby by varying the size of said opening means the value of force required to tilt said first member is varied.
Claim 10
Dependent Claim
158 words
A cushioning assembly designed in particular to damp draft and buff forces imparted to coupling means which couple adjacent cars of a railway vehicle, said cushioning assembly comprising: an elongated housing having a closed end wall and a passageway axially extending lengthwise from said closed end wall; a damped spring unit supported in said passageway and having an elongated casing of conforming configuration to said passageway, said elongated casing being slidably disposed within said passageway, said damped spring unit including a chamber formed in the said elongated casing; a piston and piston rod disposed axially in said chamber with said piston rod having an end portion extending from the inner end of said casing toward said closed end wall; spring damped means in said chamber for providing spring and damping forces between said elongated casing and said piston in both axial directions; and force transfer means for applying draft and buff forces separately against said damped spring unit.
Claim 11
Dependent Claim
158 words
A cushioning assembly designed in particular to damp draft and buff forces imparted to coupling means which couple adjacent cars of a railway vehicle, said cushioning assembly comprising: an elongated housing having a closed end wall and a passageway axially extending lengthwise from said closed end wall; a damped spring unit supported in said passageway and having an elongated casing of conforming configuration to said passageway, said elongated casing being slidably disposed within said passageway, said damped spring unit including a chamber formed in the said elongated casing; a piston and piston rod disposed axially in said chamber with said piston rod having an end portion extending from the inner end of said casing toward said closed end wall; spring damped means in said chamber for providing spring and damping forces between said elongated casing and said piston in both axial directions; and force transfer means for applying draft and buff forces separately against said damped spring unit.
Claim 12
Dependent Claim
42 words
The cushioning assembly as defined in claim 9 wherein: said piston has an axial orifice means and said damped spring means comprises a compressible solid filling said chamber for providing a damping and spring force between said elongated casing and said piston.
Claim 13
Dependent Claim
33 words
The cushioning assembly as defined in claim 9 wherein: said force transfer means comprises a front follower in engagement with the outer end face of said elongated casing of said damped spring unit.
Claim 14
Dependent Claim
31 words
The cushioning assembly as defined in claim 9 wherein: said force transfer means comprises a strap yoke encompassing said cushioning assembly and in engagement with the rear wall of said housing.
Claim 15
Dependent Claim
48 words
The cushioning assembly as defined in claim 9 wherein: said passageway in said housing has a cylindrical configuration and is provided with a pair of guide rings and the elongated casing has a cylindrical configuration of a slightly smaller diameter than the inside diameter of said guide rings.
Claim 16
Dependent Claim
129 words
The cuShioning assembly as defined in claim 9 wherein: said piston has an axial orifice means and said spring damped means comprises a compressible solid, said compressible solid being located within said chamber and is to provide damping and spring force between said elongated casing and said piston; said force transfer means comprises a front follower in engagement with said outer end face of said elongated facing of said damped spring unit and a strap yoke encompassing said assembly which is in engagement with the rear wall of said housing; said passageway in said housing has a cylindrical configuration and is provided with a pair of guide rings and the elongated casing has a cylindrical configuration of a slightly smaller diameter than the inside diameter of said guide rings.
References Cited (Backward Citations)
US3559818A
Cited
US3726419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |