Adjustable Height Creeper

Abstract

A creeper (AEROCREEPER) that is used by a maintenance worker, pilot, mechanic, factory worker, etc. to give them easy access underneath and around planes, automobiles, factory equipment, etc. The AEROCREEPER is adjusted to various heights by the operator to support the operator's body in the optimal position for the task. The AEROCREEPER can be easily and quickly adjusted to the desired position. The AEROCREEPER is made up of four main assemblies: base assembly, backrest assembly, support arm assembly and seat assembly.

Claims

1. An adjustable-height creeper for use in working underneath and around airplanes, automobiles, and like equipment comprising a base frame, a plurality of wheels, a backrest, and a seat, wherein said creeper is adjustable without hydraulic assistance such that said creeper is repositionable from a supine configuration to a chair configuration and from a chair configuration to a supine configuration.

2. The creeper of claim 1, wherein said repositionability of said creeper defines at least one of a repositionability having a plurality of discrete predetermined configurations between a supine configuration and a chair configuration, and a repositionability that is substantially infinitely repositionable between a supine configuration and a chair configuration.

3. The creeper of claim 1, wherein the elevation of said seat and the elevation and inclination of said backrest are adjustable.

4. The creeper of claim 1, wherein said creeper includes at least one index member adapted to support said discrete predetermined configurations.

5. The creeper of claim 1, wherein said backrest includes a frame and wherein said seat is pivotably connected to said backrest frame, and wherein said backrest is pivotably connected to said base frame.

6. The creeper of claim 1, wherein said repositionability of said creeper defines a single motion repositionability wherein repositioning movement of said seat and said backrest is synchronous.

7. The creeper of claim 2, wherein repositioning to a discrete predetermined configuration occurs in response to a pulling load applied to a predetermined location on said creeper.

8. The creeper of claim 7, wherein when said repositioning is a downward repositioning, said repositioning is gravity assisted.

9. The creeper of claim 1, wherein said creeper includes a plurality of seat rollers and backrest rollers, and wherein said base frame includes a roller guide track formed therein.

10. The creeper of claim 9, wherein said creeper is configured to include rollers encasing said guide track and adapted such that said rollers are prevented from leaving said track when said creeper is repositioned.

11. The creeper of claim 9, wherein said creeper includes support arms attached to said rollers and positioned below said base frame to provide for a substantially low supine configuration.

12. The creeper of claim 1, wherein said seat remains substantially horizontal regardless of the configuration in which said creeper is positioned.

13. The creeper of claim 1, wherein said creeper is substantially free of pinch points.

14. The creeper of claim 1, wherein said creeper includes a dampening device adapted to provide modulated repositioning descent.

15. An adjustable-height creeper for use in working underneath and around airplanes, automobiles, and like equipment comprising a base frame, a plurality of wheels, a backrest, and a seat, wherein said creeper is adjustable without hydraulic assistance such that said creeper is repositionable from a supine configuration to a chair configuration and from a chair configuration to a supine configuration, and wherein said repositionability of said creeper defines a single motion repositionability wherein repositioning movement of said seat and said backrest is synchronous, and wherein said seat remains substantially horizontal regardless of the configuration in which said creeper is positioned.

16. The creeper of claim 15, wherein said repositionability of said creeper defines at least one of a repositionability having a plurality of discrete predetermined configurations between a supine configuration and a chair configuration, and a repositionability that is substantially infinitely repositionable between a supine configuration and a chair configuration.

17. The creeper of claim 15, wherein said creeper is substantially free of pinch points.

18. The creeper of claim 15, wherein said creeper includes a dampening device adapted to provide modulated repositioning descent.

19. An adjustable-height creeper for use in working underneath and around airplanes, automobiles, and like equipment comprising a base frame, a plurality of wheels, a backrest, and a seat, wherein said creeper is adjustable without hydraulic assistance such that said creeper is repositionable from a supine configuration to a chair configuration and from a chair configuration to a supine configuration, and wherein the elevation of said seat and the elevation and inclination of said backrest are adjustable, and wherein said backrest includes a frame and wherein said seat is pivotably connected to said backrest frame, and wherein said backrest is pivotably connected to said base frame, and wherein said repositionability of said creeper defines a single motion repositionability wherein repositioning movement of said seat and said backrest is synchronous, and wherein said seat remains substantially horizontal regardless of the configuration in which said creeper is positioned, and wherein said creeper is substantially free of pinch points.

20. The creeper of claim 19, wherein said creeper includes a dampening device adapted to provide a modulated repositioning descent.

Description

DESCRIPTION OF DRAWINGS

[0015] In order that the advantages of the invention will be readily understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are not therefore to be considered to be limiting of its scope, the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which:

[0016] FIG. 1 is a rear isometric view of a first embodiment of the invention with the apparatus in an upright chair position;

[0017] FIG. 2 is a front isometric view of a first embodiment of the invention with the apparatus in a supine position;

[0018] FIG. 3 is a front isometric view of a first embodiment of the invention with the apparatus in a lower intermediate position;

[0019] FIG. 4 is a front isometric view of a first embodiment of the invention with the apparatus in an upper intermediate position;

[0020] FIG. 5 is a front isometric view of a first embodiment of the invention with the apparatus in an upright chair position;

[0021] FIG. 6 is a side view of a first embodiment of the invention with the apparatus in a supine position.

[0022] FIG. 7 is a side view of a first embodiment of the invention with the apparatus in a lower intermediate position.

[0023] FIG. 8 is a side view of a first embodiment of the invention with the apparatus in an upper intermediate position.

[0024] FIG. 9 is a side view of a first embodiment of the invention with the apparatus in an upright chair position;

[0025] FIG. 10 is a bottom isometric view of a seat assembly of a first embodiment of the invention, and;

[0026] FIG. 11 is a front isometric view of a second embodiment of the invention with the apparatus in an upper intermediate position.

DETAILED DESCRIPTION OF THE INVENTION

[0027] Reference throughout this specification to one embodiment, an embodiment, or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, appearances of the phrases in one embodiment, in an embodiment, and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.

[0028] Furthermore, the described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are included to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

[0029] In order to facilitate the understanding of the present invention in reviewing the drawings accompanying the specification, a feature list is provided below. It is noted that like features are like numbered throughout all of the figures.

TABLE-US-00001 FEATURE TABLE # Feature # Feature 1a First cross member 1b Second cross member 2a First side 2b Second side 3 Seat front cross piece 4a First indexing teeth 4b Second indexing teeth 5 Indexing rod 8a First frame side 8b Second frame side 9a First main support arm 9b Second main support arm 10 Support arm cross piece 11a First small support arm 11b Second small support arm 12 Seat 13 Backrest 14a First roller 14b Second roller 14c Third roller 14d Fourth roller 14e First spacer 14f Second spacer 14g Third spacer 14h Fourth spacer 15a First guide plate 15b Second guide plate 15c Third guide plate 15d Fourth guide plate 16 Roller rod 18a First swivel caster 18b Second swivel caster 18c Third swivel caster 18d Fourth swivel caster 19 Spring/damper

[0030] Referring now to the drawings, a first embodiment of the invention is a creeper apparatus having, a base assembly, a backrest assembly, a support arm assembly and a seat assembly.

[0031] The base assembly is made up of the base frame and swivel casters.

[0032] The base frame consists of two sides 2a and 2b that support the weight of the creeper and operator and two cross members 1a and 1b that connect the sides to form a rectangular base frame. The cross members also support the seat and backrest in the lowest position.

[0033] The base frame is attached to four swivel casters 18a, 18b, 18c, and 18d. These casters are used to support the weight of the creeper and the operator. The casters are also used so that the operator can easily maneuver the creeper to the desired location.

[0034] The base sides 2a and 2b are bent to provide sufficient clearance for the casters while providing a low folded position. The base sides also provide a track for rollers 14a, 14b, 14c, and 14d as the seat position is adjusted.

[0035] The backrest assembly is made up of a frame consisting of two sides 8a and 8b and a backrest 13. The backrest frame is connected pivotally to the base frame with spacers 14e though 14h that provide clearance to avoid hazardous pinch points. The backrest is upholstered with padding and a supporting plate or board and is connected to the backrest frame.

[0036] The support arm assembly consists of the main support arms 9a and 9b, two small support arms 11a and 11b, and a support arm cross piece 10.

[0037] The support arm assembly is pivotally connected to the backrest assembly. It is attached to the base frame with rollers 14a, 14b, 14c, and 14d on top and bottom of the base sides 2a and 2b. The support arm assembly supports the seat assembly with the indexing rod 5 engaged in the indexing teeth 4a and 4b. The indexing rod 5 is supported by the two small support arms 11a and 11b and by the main support arms 9a and 9b. The two small support arms are supported by the support arm cross piece 10. The two small support arms function to decrease the bending moment on the indexing rod 5. The other end of the support arm assembly is attached to the roller rod 16. This rod is attached to the rollers 14a, 14b, 14c, and 14d and the guide plates 15a, 15b, 15c, and 15d. The rollers roll along the base assembly as the seat and backrest are raised and lowered. The guide plates are to support the downward load as well as to prevent movement from side to side.

[0038] The seat assembly is made up of a seat 12, indexing teeth 4a and 4b and the front seat cross piece 3.

[0039] The seat 12 is upholstered with padding and a supporting plate or board. This seat is attached to the front seat cross piece 3. The cross piece is attached to the front of the indexing teeth 4a and 4b. The back of the indexing teeth are pivotally connected to and supported by the backrest assembly. The front of the indexing teeth is supported by the indexing rod 5. The indexing teeth are designed to slide across the indexing rod as the seat and backrest are raised. The indexing rod locks into the indexing teeth as soon as the backrest is released. To free the indexing rod in order to lower the seat and backrest, one simply lifts up on the front of the seat and lowers to the desired position. Once the desired position is reached one simply releases the seat allowing the indexing rod and indexing teeth to engage. (Note: for controlled lowering, it is best to hold the backrest with the other hand.)

[0040] A second embodiment of the invention is the same as the first embodiment but with the addition of a spring or damper or a combined spring/damper 19 that would better control the descent of the creeper.

[0041] A third embodiment of the invention is the same as the first embodiment but uses a continuously adjustable mechanical device for raising and lowering instead of the use of indexing teeth. An example of such a mechanism would be a worm-gear winch and cable system.

[0042] The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.