MOTORCYCLE REAR SPRING SUSPENSION DEVICE

• US 3,830,517 A
• Filed: 11/16/1973
• Issued: 08/20/1974
• Est. Priority Date: 11/16/1973
• Status: Expired due to Term

• Current Assignee: Neill E. Mcneill
• Original Assignee: Neill E. Mcneill
• Inventors: McNeill, Neill E.
• Primary Examiner(s): Goodman, Philip
• Assistant Examiner(s): Carroll, John A.
• Application Number:
  US05/416,572
• Time in Patent Office: 277 Days
• Field of Search: 280/124R 267/60,61R,169,170
• US Class Current: 280/285
• CPC Class Codes: B60G 3/01 the wheel being mounted for sliding movement, e.g. in or on a vertical guide camber maintaining means B60G3/26
• CPC Class Codes: B62K 2201/04 Helical springs
• CPC Class Codes: B62K 25/10 for rear wheel

Abstract

A motorcycle rear spring suspension device having guide pin members rigidly attached to a bearing block at their inner ends as a safety factor and mounted at their outer ends in guide pin holders having a lip on two opposite sides with a square center portion to prevent loosening of the holder as a safety factor.

Claims

1. A motorcycle rear spring suspension device, comprising:

a housing having a top U-shaped bracket member and a bottom Ushaped bracket member connected at each end by longitudinal bar members;

a bearing block member having a bore there through;

a top guide pin member rigidly attached to the top portion of said bearing block member;

a bottom guide pin member rigidly attached to the bottom portion of said bearing block member;

a top and a bottom guide pin holder for the respective outer ends of said top and bottom guide pin members, said guide pin holders having a square center outer portion having a lip on two opposite sides engaging each of said U-shaped brackets, and having a threaded outer portion to receive a retainer nut member;

a top spring member placed around said top guide pin member and between said top guide pin holder and said bearing block member; and

a bottom spring member placed around said bottom guide pin member and between said bottom guide pin holder and said bearing block member, wherebY dislodging of said top and bottom springs is prevented while said device is absorbing road shocks when said motorcycle is in motion.

2. A motorcycle rear spring suspension device according to claim 1 in which the housing is provided with adjustment bolt members.

3. A motorcycle rear spring suspension device according to claim 1 in which the top spring member is longer than the bottom spring member.

4. In a motorcycle rear spring suspension device of the type having a bearing block with top and bottom guide pin members and top and bottom springs, the improvement comprising:

a frame with top and bottom U-shaped brackets connected by longitudinal bar members;

a top guide pin holder with an opening receiving the outer end of said top guide pin member; and

a bottom guide pin holder having an opening receiving the outer end of said bottom guide pin member;

said top and bottom guide pin holders each having a square center portion with a lip on two opposite sides engaging respectively said top and bottom U-shaped brackets.