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US4950009A Expired / Lapsed US ⏱️ 0.0 years remaining

Safety step bumper assembly

Assignee: Individual
•
Filing: 1989-08-30
•
Granted: 1990-08-21
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Expires: 2009-08-30
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Abstract

Abstract A safety step bumper assembly for a vehicle includes a frame having a base member constructed for fixed attachment to the chassis of a vehicle, an elongated step bumper member mounted upon the frame in a predetermined axial position and a predetermined rotational position, and a pin joining the step bumper member and frame in pivotable relationship. The step bumper member pivots, relative to the frame, from, and returns to, the predetermined rotational position. The safety step bumper assembly defines a slot, and the pin member engages in the slot and moves therein between a first pin position spaced from the chassis, with the step bumper member in the predetermined axial position, and a second pin position relatively closer to the chassis. The assembly also includes, e.g. a leaf spring for biasing the step bumper member toward the predetermined axial and rotational position. The safety step bumper assembly is thereby adapted for pivoting and sliding movement of the step bumper member, relative to the fixed frame on the chassis, from the predetermined axial and rotational positions, in a manner to adjust to otherwise destructive forces applied to the step bumper member by engagement upon a dock or other obstruction.

Inventors

  • 👤 Robert W. Vetter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 23:27
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; B60R19/28; B60R19/285; B60R19/48

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 240 words
A safety step bumper assembly for a vehicle comprising: a frame having a base member constructed for fixed attachment of said frame to the chassis of a vehicle, an elongated step bumper member mounted upon said frame in a predetermined axial position and a predetermined rotational position, a pin member joining said step bumper member and said frame in pivotable relationship, said step bumper member adapted for pivoting movement, relative to said frame, from said predetermined rotational position and for return thereto, said safety step bumper assembly defining a slot, and said pin member engaged in said slot and movable therein between a first pin position with said step bumper member spaced from said chassis and in said predetermined axial position, and a second pin position with said step bumper member relatively closer to said chassis, means for biasing said step bumper member toward said predetermined axial and rotational position, and a stop member adapted to limit movement of said step bumper member for return of said bumper member toward its said predetermined axial and rotational positions under influence of said means for biasing, whereby said safety step bumper assembly is adapted for pivoting and sliding movement of said step bumper member, relative to the fixed frame on the chassis, from said predetermined axial and rotational positions, in a manner to adjust to otherwise destructive forces applied to said step bumper member by engagement upon a dock or other obstruction.
Claim 2
Dependent Claim 240 words
A safety step bumper assembly for a vehicle comprising: a frame having a base member constructed for fixed attachment of said frame to the chassis of a vehicle, an elongated step bumper member mounted upon said frame in a predetermined axial position and a predetermined rotational position, a pin member joining said step bumper member and said frame in pivotable relationship, said step bumper member adapted for pivoting movement, relative to said frame, from said predetermined rotational position and for return thereto, said safety step bumper assembly defining a slot, and said pin member engaged in said slot and movable therein between a first pin position with said step bumper member spaced from said chassis and in said predetermined axial position, and a second pin position with said step bumper member relatively closer to said chassis, means for biasing said step bumper member toward said predetermined axial and rotational position, and a stop member adapted to limit movement of said step bumper member for return of said bumper member toward its said predetermined axial and rotational positions under influence of said means for biasing, whereby said safety step bumper assembly is adapted for pivoting and sliding movement of said step bumper member, relative to the fixed frame on the chassis, from said predetermined axial and rotational positions, in a manner to adjust to otherwise destructive forces applied to said step bumper member by engagement upon a dock or other obstruction.
Claim 3
Dependent Claim 54 words
The safety step bumper assembly of claim 1 wherein said stop member comprises an elongated element disposed in fixed relationship with said frame, said stop member and said means for biasing cooperatively adapted to return said safety step bumper assembly toward said predetermined axial and rotation positions upon relaxation of said otherwise destructive force.
Claim 4
Dependent Claim 19 words
The safety step bumper assembly of claim 2 wherein said stop member is fixedly mounted upon said pin member.
Claim 5
Dependent Claim 28 words
The safety step bumper assembly of claim 1 wherein said pin member is fixedly mounted upon said frame, and said slot is defined by said step bumper member.
Claim 6
Dependent Claim 30 words
The safety step bumper assembly of claim 1 wherein said means for biasing said step bumper member toward said first position away from said chassis is mounted on said frame.
Claim 7
Dependent Claim 19 words
The safety step bumper assembly of claim 1 or 5 wherein said means for biasing comprises a leaf spring.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-08-20 1994-02-19 1994-08-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-08-20 1998-02-19 1998-08-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-08-20 2002-02-19 2002-08-21 $7700.00 Window Closed / Lapsed

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