Wheel assembly having wheel-mounting sleeve and retainer

• US 7,377,597 B2
• Filed: 02/15/2005
• Issued: 05/27/2008
• Est. Priority Date: 02/15/2005
• Status: Active Grant

• Current Assignee: Geo Plastics, Co.
• Original Assignee: Geo Plastics, Co.
• Inventors: Morris, Michael A.
• Primary Examiner(s): Stormer; Russell D.
• Application Number:
  US11/059,153
• Publication Number:
  US 20060181141A1
• Time in Patent Office: 1,197 Days
• Field of Search: 301/111.01, 301/112, 301/118, 301/119, 301/120, 301/121, 301/122, 301/111.04
• US Class Current: 301/121
• CPC Class Codes: B60B 37/10 the wheels being individually rotatable around the axles
• CPC Class Codes: B65F 1/1473 Receptacles having wheels

Abstract

A wheel-mounting sleeve and retainer is described. The wheel-mounting sleeve includes a sleeve body, formed and dimensioned for mounting through a wheel-bearing bore in a wheel and into telescoped relation over an axle having a retaining notch. The wheel-mounting sleeve includes at least one retainer discrete from the sleeve body. The retainer includes monolithic spring and lug portions, and is coupled to the sleeve body such that the lug portion is resiliently positionable through a port in the sleeve body and into the axle bore to a detent position wherein the lug portion engages the retaining notch of the axle to constrain the axle within the axle bore. A method of using the wheel-mounting sleeve and retainer is also described.

Claims

1. In a wheel-mounting sleeve including a sleeve body, formed and dimensioned to mount through a wheel-bearing bore in a wheel and into telescoped relation over an axle including a retaining notch, the sleeve body including an inner end and an outer end with an axle bore there between, the axle bore dimensioned to receive the axle in telescoped relation, an improvement comprising:

the sleeve body including a port formed and dimensioned to access the retaining notch of the axle when positioned in the axle bore; and

at least one arcuate retainer discrete from the sleeve body, the at least one arcuate retainer comprising monolithic spring and lug portions, and coupled to the sleeve body such that the lug portion is resiliently positionable through the port and into the axle bore to a detent position wherein the lug portion engages the retaining notch of the axle within a wheel-bearing bore in a wheel to constrain the axle within the axle bore.

2. The wheel-mounting sleeve of claim 1, wherein the at least one retainer is detachable from the sleeve body.

3. The wheel-mounting sleeve of claim 1, wherein the at least one retainer includes a lifting tab portion configured to disengage the lug portion from the retaining notch of the axle, and wherein the sleeve body includes a passageway from the outer end to the axle bore to access the lug portion with a tool to unfasten the wheel from the axle.

4. The wheel-mounting sleeve of claim 1, wherein the at least one retainer includes a catch portion formed and dimensioned to engage a locating portion of the sleeve body to form a latch constraining the at least one retainer with respect to the sleeve body.

5. The wheel-mounting sleeve of claim 4, wherein the locating portion is a pivot and the catch portion is a hook formed and dimensioned to engage the pivot to constrain rotational motion of the at least one retainer about a longitudinal axis of the sleeve body.

6. The wheel-mounting sleeve of claim 1, wherein the at least one retainer is an arcuate band formed from flat metal stock.

7. The wheel-mounting sleeve of claim 6, wherein the arcuate band has at least one rounded edge, which extends along the band.

8. The wheel-mounting sleeve of claim 6, wherein the at least one arcuate band includes centric and eccentric portions.

9. The wheel-mounting sleeve of claim 6, wherein the lug portion of the at least one arcuate band includes a ramp face configured to engage a tip of the axle to bias the at least one arcuate retainer away from the detent position as the axle is inserted into the axle bore.

10. In a wheel-mounting sleeve including a sleeve body, formed and dimensioned for mounting through a wheel-bearing bore in a wheel and into telescoped relation over an axle having a retaining notch, the sleeve body having an inner end and an outer end with an axle bore therebetween, the axle bore dimensioned for receiving the axle in telescoped relation, an improvement comprising:

the sleeve body having a port formed and dimensioned for access to the retaining notch of the axle when positioned in the axle bore, wherein the sleeve body includes a channel having a channel bottom and channel sides, wherein

the channel is formed and dimensioned to receive the arcuate band; and

the channel bottom coincides with the port,

the channel thereby having a dual effect of constraining motion of the arcuate band along a longitudinal axis of the sleeve body and locating the lug portion of the arcuate band at a position along the longitudinal axis of the sleeve body that corresponds with the position of the port along the longitudinal axis of the sleeve body; and

at least one retainer discrete from the sleeve body, the at least one retainer comprising monolithic spring and lug portions, and coupled to the sleeve body such that the lug portion is resiliently positionable through the port and into the axle bore to a detent position wherein the lug portion engages the retaining notch of the axle to constrain the axle within the axle bore, wherein the at least one retainer is detachable from the sleeve body, wherein the at least one retainer is an arcuate band formed from flat metal stock.

11. The wheel-mounting sleeve of claim 10, wherein the sleeve body includes a ramp adjacent to the port and within the channel and a ramp shoulder above the port for engaging the lug portion, the ramp having a dual effect of acting as a guide for the lug portion and displacing the spring portion, and the ramp shoulder having a dual effect of acting as a guide for the lug portion and as constraint for rotational motion of the lug portion about a longitudinal axis of the sleeve body as the lug portion is biased away from the detent position.

12. A wheel-mounting sleeve usable with an axle including a retaining notch, the wheel-mounting sleeve comprising:

a sleeve body formed and dimensioned to mount through a wheel-bearing bore in a wheel and retaining the wheel on the sleeve;

the sleeve body including an inner end and an outer end with an axle bore therebetween, the axle bore formed and dimensioned to receive the axle in telescoped relation;

at least one arcuate retainer discrete from the sleeve body, the at least one arcuate retainer comprising monolithic spring and lug portions; and

the sleeve body including at least one port formed and dimensioned to receive the lug portion;

wherein the spring portion is formed and dimensioned to resiliently extend the lug portion of the at least one arcuate retainer through the at least one port of the sleeve body and relative to the axle bore to form a latch between the sleeve body and the axle within a wheel-bearing bore in a wheel.

13. The wheel-mounting sleeve of claim 12, wherein the at least one retainer includes a lifting tab portion configured to disengage the lug portion from the retaining notch of the axle, and the sleeve body includes a passageway from the outer end to the axle bore to access the lug portion with a tool to unfasten the wheel from the axle.

14. The wheel-mounting sleeve of claim 12, wherein the at least one retainer includes a catch portion formed and dimensioned to engage a locating portion of the sleeve body to form a latch constraining the at least one retainer with respect to the sleeve body.

15. The wheel-mounting sleeve of claim 14, wherein the locating portion is a pivot and the catch portion is a hook formed and dimensioned to engage the pivot to constrain rotational motion of the at least one retainer about a longitudinal axis of the sleeve body.

16. The wheel-mounting sleeve of claim 12, wherein the lug portion of the at least one arcuate band includes a ramp face to engage a tip of the axle to bias the at least one arcuate retainer away from the detent position as the axle is inserted into the axle bore.

17. A wheel-mounting sleeve for use with an axle having a retaining notch, the wheel-mounting sleeve comprising:

a sleeve body formed and dimensioned for mounting through a wheel-bearing bore in a wheel and retaining the wheel on the sleeve;

the sleeve body having an inner end and an outer end with an axle bore therebetween, the axle bore formed and dimensioned for receiving the axle in telescoped relation;

at least one retainer discrete from the sleeve body, the at least one retainer comprising monolithic spring and lug portions; and

the sleeve body having at least one port formed and dimensioned to receive the lug portion, wherein the sleeve body includes a channel having a channel bottom and channel sides, wherein

the channel is formed and dimensioned to receive the at least one retainer; and

the channel bottom coincides with the at least one port,

the channel thereby having a dual effect of constraining motion of the retainer along a longitudinal axis of the sleeve body and locating the lug portion of the at least one retainer at a position along the longitudinal axis of the sleeve body, wherein the lug portion extends through the at least one port along the longitudinal axis of the sleeve body;

wherein the spring portion is formed and dimensioned to resiliently position the lug portion of the at least one retainer relative to the axle bore to form a latch between the sleeve body and the axle.

18. The wheel-mounting sleeve of claim 17, wherein the sleeve body includes a ramp adjacent to the at least one port and within the channel and a ramp shoulder above the at least one port for engaging the lug portion, the ramp having a dual effect of acting as a guide for the lug portion and displacing the spring portion, and ramp shoulder having a dual effect of acting as a guide for the lug portion and as constraint for rotational motion of the lug portion about a longitudinal axis of the sleeve body as the lug portion is biased away from the detent position.

19. An assembly, comprising:

a wheel assembly including a wheel-bearing bore extending therethrough from an inner side to an outer side;

a sleeve body formed and dimensioned to mount through the wheel-bearing bore and retaining the wheel on the sleeve body, the sleeve body including an inner end and an outer end with an axle bore therebetween, the axle bore formed and dimensioned to receive an axle including a retaining notch in telescoped relation; and

at least one arcuate retainer discrete from the sleeve body, the at least one arcuate retainer comprising monolithic spring and lug portions, the sleeve body including at least one port formed and dimensioned to receive the lug portion therethrough, wherein the spring portion is formed and dimensioned to resiliently position the lug portion of the at least one arcuate retainer relative to the axle bore to form a latch between the wheel assembly and the axle, the latch formed within the wheel-bearing bore of the wheel.

20. The assembly of claim 19, further comprising a rotational constraint to maintain an angular position of the lug portion about a longitudinal axis.

21. The assembly of claim 19, wherein the sleeve body comprises a ramp adjacent to the at least one port and configured to guide the lug portion and to displace the spring portion outwardly.